close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2404640

код для вставки
July23, 1946-
R’. B. LAWRANCE
2,404,540
ULTRA-HIGH ~FREQUENCY SIGNAL-TRANSLATING APPARATUS
~Fileci 00¢. 29. 1941
I
2 Sheets-Sheet 1
INVENTOR
IGHARD B. LAWR » CE
ATTOR NY
July 23, 1946.
J 2,404,640
R. B. LAWRANCE '
ULTRA-HIGH-FREQUENCY SIGNAL-TRANSLATING APPARATUS
.2 Sheets-Sheet '2
Filed Oct. 29, 1941
65
INVENTOR
RICHARD B. LAWRANCE
Y
AT'rohNEY
Patented July 23, .1946
2,404,640 V
UNITED STATES PATEN T OFFICE
2,404,640
ULTRA HIGH FREQUENCY SIGNAL!
‘ TRANSLATING APPARATUS
‘ ‘Richard B. Lawrance, Kingston, Massr, assignor,
by mesne assignments, to Hazeltine Research,
‘ Inc., Chicago, 111., a corporation ‘of Illinois
Application October 29, 1941, Serial No; 416,986 .
14Claims. (Cl. _250—36)
a
1
.
A
The present invention relates to ultra-high
frequency signal-translating apparatus and, par
ticularly, to such apparatus of the type adapted
‘
‘
'
adapted toioperate.
a
,.
‘
H
In accordance with the invention, an ultra
to be tuned over a wide range of operating fre
quencies.
2
range of frequencies ‘over which the apparatus‘ is
7 high-frequency
signal-translating
apparatus‘
comprises an elongated rigid‘conductor ands
?xed conductive‘ member slidably supporting the
conductor .and providing an electrical ground
.
Certain ultra-high-frequency signal-translat
ing apparatus of the prior art has included a pair
of parallel stationary conductors arranged as a
connection thereto. Thereiis provided mean's'in
cluding the conductor for forming ‘a resonant
range of operating frequencies by a short-circuit~ 10 circuit tunable'over a'range of frequencies by
ing‘ bar slidable along the conductors. The ar
adjustment of the length of the conductor“ ex-l
two-wire transmissiongline and tunable over a
rangernent thus provided is effectively a two
terminal- resonant circuit and has generally been
used as a single-tuned stage between ‘tandem
stages of ampli?cation or as a single-tuned stage
of anloscillator. In the prior art arrangements
tending from one side of the aforesaid member;
The apparatus includes-means movable in unison
with the conductor for supporting vacuum-tube
apparatus and associated circuit elements ‘at the‘
end of the conductor on the aforesaid one side.
of the member. The apparatus also includes
means for moving the conductor through the
member to' tune'the resonant circuit to a predel
of this nature, the coupling of any signal-trans
lating channels or associated vacuum tubes with
the two-wire transmission line has been accom
plishedby coupling such channel or tubes directly 20 termined operating frequency in. the‘afore‘said
or capacitively with the openend of the line, or
an intermediate tap. It would be desirable, how
frequency‘range.
"
'31
'
‘
I
In accordance with ‘a preferred form of the in
ever, to couple to“ the two-wire transmission line
vention,‘ a: signalitranslating apparatus ‘ofg‘the‘
by the use of an inductivecoupling arrangement
type described comprisesa pair of elongated‘ rigid
which has the advantage that it can be arranged 25 conductors and a ?xed member slidably'jsupporte
to, avoid ground return‘ currents. Such‘ inductive
ing the conductors in parallel spaced ‘relation
coupling systems, however, must'be positioned in
and providing an electrical connection ther‘ebye-y
the vicinity of the shorting bar since this is the
tween, the‘ conductors forming a resonant‘ circuit
region of maximummagnetic ?eld intensity'and
tunable over aran‘ge of frequencies by adjustment
?ux density about the conductors.‘ Inductive cou
30
pling arrangements of this nature have hereto
fore been used only ‘where the signal-translating‘
of the lengths of the conductors‘ extending from
one side‘ of the member, The region of ‘maxi-H
mum ?eld intensity about the conductors remains
apparatus‘ is» designed to operate at or near one
s'tation'ar'y'in the vicinity of the ‘one side of the
frequency. No attempt has been made to use
member over' the aforesaid range 'of frequencies._
such coupling arrangements where the‘ appa 35 The apparatus also includes means for moving
ratus is designed to operate over a wide range of
the conductors in unison through the‘ member. .
frequencies since the region of maximum mag
to tune the resonant circuit to‘ a predetermined,’
netic ?eld intensity about the conductors would
operating‘ frequency in the aforesaid frequency
move with the short-circuiting tuning bar.
range.’
‘ ‘ '
V
'_
It is an object of the present invention, there 40 In accordance with a particular form of the
fore, to provide a new and improved ultra-high
invention, the apparatus of thetype described
frequency signal-translating apparatus which
includes means movable in ‘unison ‘with the cone.
avoids one or more of the disadvantages and limi
tations of the prior art arrangements of this
nature.
.
It is a further object of the invention to pro
vide an ultra-high-frequency signal-translating
apparatus of the type including a tuned trans
mission line and in which the region of maximum
magnetic ?eld intensity of the tuned transmission
line remains stationary at a predetermined ?xed
location over a Wide range of tuning frequencies.
whereby the transfer‘of signal energy to and
from the‘apparatus by a ?xed inductive coupling
system remains maximum throughout the wide
ductor for: supporting vacuum-tube apparatus.
46
and associated circuit elements at the end of‘the
conductoron the aforesaid one side of‘the sup
porting member. The apparatus may also in-
clude an elongatedmetallic-housing in which
case the supporting member takes the form of :a
partition wall ?xedly, supported transversely
within the housing to divide the interior thereof
into two chambers,‘ the partition wall having an
aperture through‘which the'conductor extends.
Means is provided‘fo‘r supporting? the conductor
in the aperture and for completing an electrical
2,404,640
3
4
ground connection thereto at a ?xed location near
chamber I2 and thus are movable in unison with
the conductors. The cathodes of vacuum tubes
2| and 22 are energized through respective pairs
of radio-frequency choke coils 23, 24 from an
the partition wall.
For a better understanding of the present in
vention together with other and further objects
thereof, reference is had to the following descrip
energizing circuit 25 which extends through the
tion taken in connection with the accompanying
drawings and its scope will be pointed out in the
appended claims.” ""i“
"
"
" “"'
‘
tubular conductor I8 but is insulated therefrom.
By-pass condensers 2'6, 26 connected between
the"“6ircuit' z's-‘a?d nearer conductor‘ I18 main
"
Referring now to the drawings, Fig. 1 repre
sents a top view, partly schematic, of a complete
ta‘in‘the ‘energizing circuit 25"at' ground poten
tial for currents of ultra-high frequency. The
.ultra-high-frequency signal-translating appa‘i 1.0' grid of tube 2i is coupled through a condenser
ratus embodying the invention; Fig.
a, gross
sectional view of the Fig. 1 arrangement t’ i“;
"21 to an optimum point near the end of con
dvv tor]? ‘andi's‘ connected to the cathode-ener
along the plane 2'—2; Fig. 3 is a perspective dé‘i
tail view of an arrangement-for supporting vacu
gizin'g“ circuit 25 through a grid-leak resistor 28
um-tube apparatus and associated’
ihsul'atedf‘frbrrij
and a conductor‘ 29 "which extends through, but is
W:
ments on one end of the parallel‘n‘movab'lé" con‘
T" ‘ tubular conductor I9.
The
grid"of“tube“'z2“is'similarly coupled through a
ductors of the Fig. 1 embodiment gf-the inven
condenser 30, team "optimum point near the end I
tion; Fig. 4 is a cross-sectional view of a rnhd
of cpnductor I"! and is connected to the cathode
?ed construction of ultra-high-frequentysignal 20 energizing circuit 25 through a grid-leak resistor
translating apparatus embodying the invention;
3! and a conductor 32 _which extends through,
Fig. 5' represents a ‘complete ultra-high-‘frequency
but‘ "is insulated "from," the ’tubular“c'di_i'd1vic_tor {I 1,
signal-translating apparatus embodying ‘th’e'in
The anodes‘ of tubes '2 I "andv 22"‘a‘r‘e directlybonf
vention in a modi?ed form; *and FigrG'is a cross
nected to'the end‘s'of 'therespective"conductors
sectional view of the Fig. 5~arrangement taken 25
alohgthe plane 6-;6.‘
-'
'
'
.’
'
"
"
‘..
V
_.
tubular'conductor la'iiithe' chamber I3 and'is
connected ‘ through'a‘ pair‘ of radio-frequency
choke’coi'ls 33 to'a source of'energizing‘poteng
tial, ‘such as a battery""34.‘ Resonance-damping
networks comprising series condensers 8‘, '8 and
series resistors, 9," 9 are connected between"a_
member or partition" wall I I ?xedly supported
point of zero'radio-ffrequency potential and the
transversely within the housing III to divide the
interior thereof into two chambers I2 and I3:
The partition -wall II has a ‘plurality'of' aper
tures I4, 15, I 6"through which’ extend" a-plu
rality of elongated rigid tubular conductors” I’I,
I8;'and I9, respectively. The apparatus ‘includes
means for supporting-the conductors" Hf, I8,’ and
I9 in parallel spaced. relation and for completing‘
conductors of the‘ energizing‘circuit '25‘ in p'roxg
imity to the point at‘which thelatter emerges
' into‘ chamber I3.“ The 'grid-‘cir'cuitconductor‘2Q
likewise emerges from‘th'e tubular‘ conductor I,9_
in the chamber IS'and'is" connected to one side
of the energizing‘ circuitv 25"‘ through a‘ radio-v
frequency ?lter'hompris‘ing 'a series resistor v3.5’
and shunt condenser Y36 ‘and through a‘ micreamr;
a conductive connection therebetween‘at a ?xed
meter :31. ‘The other"grid-circuit‘conductor ’3>2_
point near the partition wall 'I I. comprising" a
similarly emerges into‘T'the c'hk'am'ber I3 and is
plurality of longitudinally-slotted sleeves 29:20
with individual ones'of the apertures 14,‘? I5; ‘I6.
The; partition wall 'II and sleeves ZII'thuscQm-i
prise a unitary ?xed member'slidably supporting
.-
The energizing circuit 25 emerges from the '
Referring more particularly to Fig. .1, there
is represented a; cqmplete" ultra-high-frequency
signal-translating apparatus ‘embodying the
present invention in the‘ form of an ultra'ehiglfe
frequency oscillator. The oscillator‘includes‘an
elongated metallic‘ housing In with a "conductive
?xedly secured to the partition wall 'I I ‘in registry
“and”;
connected'to"the"saine'side‘ of the energizing cirf-v
45 cuit ' 25 ‘ through‘ a‘ similar" radio-‘frequency ?lter
comprising 'a's'eri‘es r‘e's'is'tor"3'3' and shunt con;
' denser 39 and through‘ a' m‘icro’ammeter ‘40,1 The
ends “or thje'con’ductors11,178, therewith ex; '
individual ones of the conductors‘l‘l; lBf‘an‘d I8
tend into the chamber‘ I3 are mechanically “and
tween and to; the casing Ill, usually-‘at'grou‘nd
yokej 41f‘A‘source" of space-turrets such as a
and providi‘?g‘an electrical connection‘therebee'
electrically ‘connected’ "together by a“ conductive
potential, at a ?xedrlocation near 'the' partition‘
battery‘ 42, is connected‘bétween the‘c'athode
energizing ‘circuit'25 and the‘ yoke
wherebyv
space'current is supplied‘to'tubes‘2I'and‘ 22 die‘
wall. The conductors "I1; and I9.‘ as thus arranged
and supported form a resonant circuit balanced
to ground,‘ This resonant circiut’ may, 'in‘ one
re'ctly through theré‘s'pectivetubular conductors
View of, the matter, be considered tworesonant
_ circuits each unbalanced. to ground'and'simul;
|1.and|.9_
' The batteries 34I and‘ 42 may
.. ..be A.supported
., a
to
taneously tuned by ~movement-of ‘the conductors
I1: and I9“ through the'partitrion wall II.‘ This
move'with‘th'e yoke
type of resonant circuit is comparable to that 60
formed by an inductor having two equal-valued
though in ‘practice these’ '
batteries are preferably ?xedly positioned ‘in the ~
metallic 'hoii'sing’ I used are: electrically-connected
to ‘the e'n'ergiz‘ing‘circuit "25 and the yoke \4l
series‘. condensers connected across its‘ terminals,~
through "flexible 'conduct’ors'.v Alternatively, the,
ground connections being made to the center‘
batteries Stand 42 may be positionedexternally
' pointfof" the inductorfand the junction of the
of the’housing‘ It‘ andj‘ia either event; the bat;
condensers. ’
resonant circuit is tunable -‘ teri'e‘s may be replaced‘by'any' of the well-known
over-a‘ range‘ of’; frequencies in accordance with
I forms of cathode and anode supply systems;
the; lengths; of thel'c'ornd ctors extending from
that side of the ‘partitlhqmwall IfIv which closes
The oscillator is ‘provided with‘ an output cir
cuit including a l'oop‘or' winding '45 dispOSedin
the‘ region ‘qr maximum‘ magnetic. ?eld intensity
the‘ chamberfI’Z.‘ ‘The ‘central conductor I8_ is
neutral."“°
'
M
I " m "
"
I
‘Vacuum-tube‘ apparatus comprising vacuum
tubes‘ 2| “and 22 andhssociated ‘circuit elements
70
developed about‘ the conductor ' I 9,‘ in‘ the vicinity
of th'e"pa'rtition'wal1 II "and
the side, thereof.
which closes'thechamber I2. The‘loop or ‘windmg
45 rents a component or thefmutuallinduct
sidered- ' in" greater‘ "detailf'onrth'o‘se "ends of the
an'ce type of piston attenuator includingan open
conductors |-1;~ I8: andj19‘which‘é2te1id into the’ 75 e'nded
metallic, cylindrical ‘member, 43 ?xedly se
are supporte'djin a'man?e'rpresently' to be‘ con
'
2,404,040
6
5
the partition wall. II regardless of the lengths'of
the conductors I1, I8, and I9 which extend into
curedinan'l‘ aperture 44 in one wall of the cham
ber“ I2 ‘nearthe partition wall II.’ The loop or
winding ,45 is _movably positioned in the cylin
drical member 43, whereby it is'movable into and
the chamber I2. The regions of maximum mag
netic ?eld intensity about the conductors I1 and
|9,‘theref0re, remain stationary in the vicinity of
out of the region of maximum magnetic ?eld in
tensity developed about the ‘conductor l9, which
remains stationary in the vicinity of the partition
wall II ‘over the range of operating frequencies.
the partition wall II throughout the range of fre
quencies over which the balanced resonant cir-'
cuit formed by the conductors I1 and I9 is tunable.
With the loop 45 positioned near‘ the conductor
of the oscillator. The loop winding 45 is coupled '
to a pair of output terminals 46, 41 and there is
connected across these terminals a center-tapped
impedance 48. A third output terminal 49 is con
nected‘to the center tap of the impedance 48 to
I9, the ultra-high—frequency signal ‘energy in-'
duced in the loop 45 and applied to the? output
terminals 46, 41 consequently remains. maximum
over the entire range of operating frequencies‘.
The amplitude of the signal‘output applied‘ to
provide a‘. balanced output circuit‘ for the oscil
terminals 46, 41 may be varied, as is well known,
lator. The inductance piston attenuator ‘compris
by adjustment of the loop 45 along the axis ‘of the
ing the cylinder 43 and loop or winding 45 is de
scribed in detail in a paper by Daniel E. Harriett
and Nelson P. Case entitled “The design and test
ing of multirange receivers,” which‘appears in
cylinder 43. A balanced output may be‘ obtaine
between the terminals 46‘, 41.
e‘
The purpose of the? by-pass condensers ‘ and
the'Proce'e‘dings of the Institute of Radio Engi 20 radio-frequency choke coilsiassociated with the
conductors 29 and 32 and the cathode-energizing
neers, June, 1935, pages 578-593, inclusive.
circuit 25 is to reduce the tendency of the‘ con
‘ In order to preserve substantial symmetry and
ductors 29, 32 and the conductors of th‘e‘éne‘rgizi
electrical‘balance oi the tuned circuit formed
by the conductors I1 and I9, a dummy attenuator
mission lines, thereby‘ to impair the operation of
the oscillator arrangement.
cylinder Ellis sec‘uréd’in an aperture 5| provided
in the‘wall of the housing I0 at a pointdiamet
‘Fig. 3 illustrates in greater detail the con
rically opposite the cylinder 43.‘ The cylinder ‘50
struction by which the vacuum tubes “2| and-‘22
and their associated circuit elements are ?xedly
Movement of the tubular conductors I1, I8, and
I9 in uniSOn through the partition wall II is ef 30 supportedvon the ends of the ‘conductors I1 and
is closed at its outer end 52.
s
'
I9 to move therewith. Tube ‘sockets ‘5,8,, 59-are
fected‘ by a rack 53 provided on the center‘ con
provided for the respective vacuum tubes'2I and
ductor IB, the rack 53 being driven by a pinion
gear 54 which is ?xedly secured to one end of a
22 and are ?xedly supported in spaced‘relation
shaft 55. The other end of the shaft 55 extends
outsidejof the housing I 0 and has secured thereon
a‘suitable calibrated dial- and operating knob 56.
by spacing members 60, SI, 62. Two ‘oi'the sp'ac-,
ing members. for example, the members 60 and
BI, are ?xedly securedto the ends of individual
ones of the conductors‘ I1 and I9_ by‘ any suitable
A dummy rack 51 is provided on the center con
means, as soldering, welding or the like. ‘The
ductor 'I8 diametrically opposite the rack 53 to
third supporting, member, for example, the mem
preserve symmetry and electrical balance.
Considering now the operation of the oscillator 40 ber 62, is used as a winding form for ‘the pairs
of radio-frequency chokes‘23 and 24. The by-_
arrangement just described, vacuum tubes 2| and
pass condensers 21 and 30 are conveniently
22, connected in push-pull to the resonant circuit
formed by wrapping a ribbon of conductive ma
comprising conductors I1 and I9, generate ultra
terial of suitable width over a layer of'li'nsulat-j
high-frequency signal oscillations which develop
ing material provided near the ends of ‘the re
standing waves of potential and current on the
spective conductors I9 and I1. ‘The optimum
conductors I1'arid I9, the potential waves hav
position of these condensers varies both with the
characteristics of the balanced resonant, circuit
formed by the conductors l1 and I9 and with the‘
ing a maximum value near'the ends of the con
ductors I1, I9 and the current waves having a
maximum value in the vicinity of the partition
wall II.
Sustained oscillations are maintained 50 constants of the vacuum-tube apparatus and cir
cuit ‘elements associated therewith and can best
by feeding back to the grids of tubes 2| and 22
through ‘the respective condensers 21 and 3|) the
i be determined by experiment. By-passiconden
sers 26, 26, Fig. 1, are conveniently formed in,‘
high-frequency potentials developed ‘at optimum
similar manner on the center, conductor ‘I8.
points near the ends of therespective conductors
I9 and I1. Suitable operating biases for the‘ grid
of tubes‘ZI and‘ 22 are produced in Well-known
manner “by grid recti?cation of the generated
55
The region of greatest magnetic ?eldintensity
inthe Fig. 1 arrangement occurs ‘at theKposition
occupied by the centralconductor I8 and'isiproa
resonant circuit tunable. to’ the operating fre
quency, the latter yarying with the lengths of ‘the
ing ‘circuit‘25
to act as ‘par sit c resona t rans?
’ Thus, the balanced resonant circuit formed by
the conductors l1 and I9‘is tunable over a ‘range
by similar reference’ numerals, ‘except that an
additional conductor‘ l8’ permits the conductor
oscillations and appear across the respective re
sistors 28.and 3|,‘ a state of sustained oscillation
duced by the combined‘fields of ':the conductors
l1 and I9. Where the maximum possible output“
being indicated by the microammeters 31 and 40. 60 is desired. it is therefore necessary that the in-‘
ductance‘ piston, attenuator, 43, 45‘_be ‘positioned
The conductors I1 and I9 thus operate as a bal
anced transmission line and form a balanced
at‘this
point.
‘
The‘ cross-sectional
‘view illus-v
trated in Fig. 4 represents a modi?ed construc
tion by which this may be accomplished. “The
conductors I 1 and I9 which extend from the par‘ 65 arrangement of Fig. 4 is essentially sirn'ilari'to
that of Fig. 1, similar elements being designated
tition wall I I into the chamber I2.
l8 to be moved to one side of theposition which
and the rack 53 comprise means for moving the 70 it occupies in the Fig. 1 arrangement‘while pre
of frequencies. The dial 56, the pinion gear 54,
conductors I1, I8, and I9 through the partition
wall II to tune the resonant circuit over the oper
ating frequency'range. The standing waves of
current developed along the conductors l1 and ‘I 9
always ‘have maximum values in the vicinity ‘of
serving symmetry and electrical balance’of the
resonant circuit provided‘ by the conductors ‘I1
and I9. Symmetry and electrical balance‘is fur; ,
_ ther preserved by the provision of dummyracks
53' and 51' on the dummy ‘conductor I8‘. The
7
8
cylindrical member 43 of the piston attenuator is
now ?xedly positioned in an aperture provided
oscillator arrangementexcept.‘that. each of the
conductors- I ‘I and. I Sloperatés as .arvresonant
transmission line comprising a single-conductor
unbalanced to ground as distinguished fromthe
balanced ‘pair of conductors I ‘I and I9 which
in the partition wall’ He at a point aligned'with
and midway between the conductors I‘! and I9.
The operation of thismodi?ed form of high-ire
quency oscillator is essentially similar to‘ that
form the tuned circuit of theiFig. I arrange
of-the. Fig. .1 arrangement and will notice re
peated
."
'
..
x
. vFig; .5 ‘illustrates a modi?ed form of theiinven
tion comprising an ultra-high-frequency ampli
l0
?erarrangement which is essentially similar to '
the;oscillator arrangement of Fig. 1, similar ele
ment.» Input ultrae-high-frequency signalcu'r
rents applied to the input terminals 83, 84 pro
duce along the conductor I9,_when .the latter is
tuned'to the frequency of the input signal by suit
ably proportioning the extended length‘ of this
conductor from. the partition wall II‘; a standing
' ments being designated'by. similar reference nu»
wave of potential having maximum value near
morals-,except that the conductors I7 and Iain
the‘ ampli?er arrangement operate as unbalanced
transmission lines forming respective output and
input tuned circuits of the ampli?er. The cen
tral neutral conductor E8‘ in this arrangement is
the end of the conductor. This potential is ap
plied through the condenser TI .to the vacuum.
tube ampli?er 64 where it is ampli?ed and ap
plied through the condenser 85 to the output cir'-.
cuit conductor 11. ‘Since the conductors I1 and
I9 are mechanically connected bythe yoke'ID
longer than in Fig. land extends through an
aperture 63 in the end wall of the housing Iil. 20 and, therefore, move in unison through-the pare.
A vacuum-tube, ampli?er; device 84 and asso
tition wall II, the output circuit conductor I‘I
ciated circuit, elements therefor are enclosed
Withinthe conductor I8. jThe' anode of tube 6-‘!
is coupled -to the conductor I‘! through a con
denser 65, which may be formed, on the conduc 25.
istuned to the sameoperating frequency as. the ‘
tor IT in the manner of the condenser?il of Figs.
input circuit ‘conductor I9. Consequently, there
is developed along the conductor I‘! a standing
wave of current having maximum value in the
region. of the partition wall I I, and,‘ therefore, in
proximity to the output loop ‘or winding85. The
maximum value of ampli?ed high-frequency sig
nal- current is thus induced in the loop 85 and
69 on a yoke ‘I8, preferably of insulatingmaterial. 30. applied'to the output terminals“, 81. The
1 and 3, and is connected through radio-fre
quency chokeB'I and conductor 63, which extends
through the tubular conductor I‘!. to a terminal
which mechanically connects the conductors I‘I,
I8, and, I9 for simultaneous movement through
the partition wall, I I.
meter BI, in this operation, provides an indica
tion of the input-signal level at the control grid
The source of space cur
oftube?lLr
rent 42 is connected through a milliammeter
‘II and a ?lter network comprising agsreries re
sistor. ‘I2 and a shunt condenser ‘It/to the ter
Additional
signal-translatingapparatus embodying the in
vention has the advantage that the region of
maximum magnetic ?eld'intensity of its tuned
inputand output circuits remains stationary at
resistor 88, and a microammeter 8I__to the cath-v
a predetermined ?xed location over a wide range.
of tuning frequencies, thus ensuring that the
transfer of signal energy to and from the appa
ratus by ?xed inductive coupling means remains
nant circuit of the ampli?er and there .is con
sequently coupled to the conductor I 9 in a region
maximum over a wide range of frequencies over
of its maximumgmagnetic ?eld intensity, which
is in the .vicinityof the. partition wall I I, an input
loop or vwinding 82 having input circuit termi- -
in the vicinity of the partition wall I I where there
?eld intensity about the conductor I'I.- ~-
I
A cross-sectional view of the apparatus of Fig.
5 is shown in Fig. 6. This view illustrates more
clearly the arrangement ofa second partition
wall 88, 88 which is ?xedly secured longitudinally
of the housing I8 at the elevation of the center,
conductor I8 and extends from the partition wall
II to the opposite end of the housing ID .to form
an’ input circuit chamber I20. and an output cir
cuit chamber I 2b, thus isolating the input and
output circuits of the ampli?er.
.
The’ operation of the Fig.5 ampli?er arrange
.men-t is'essentially similar to that of the Fig.»
.
it will be evident that an ultra-high-frequency
ode-energizing circuit 25.
The conductors I8 and I9 form‘ the input reso
is developed{ the region of maximum_ magnetic
>
I From the above description of the invention,
a radio-‘frequency choke ‘I8, conductor 18, a grid
output loop or winding 85 havingoutput circuit
terminals“, 81,. the winding 85 being; positioned
g
terminals 83, 84 of the next stage. -
screen grid if desired. The control electrode of.
tube 54' is coupled through a condenser ‘l1 to the
end of the conductor I9 and is connected through
Similar1y_,_ the conductors IT and
V‘.
oscillator arrangement of Figs. 1 and 2. Alsoseve
eral stages vcan be cascaded by-connecting the
40 output terminals 86; 87 of one stage to‘ the input
?lter networks‘ of well-known form may be in
cluded in the energizing circuits of the anode and
I8 form the output'resonant circuit of the ampli
?er-and there-is coupled to this conductor I"! .an
I
push-pull or balanced ampli?er may be provided
using the’ balanced construction " disclosed in ‘the
gized from the battery 42 througha ?lter net
workcomprisinga seriesresistor l4 and shunt
condenser ‘I5- and .a conductor ‘I6, which extends»
nals 83, 84.
--
. 6 is of the unbalanced; or single-‘ended type, a
minal 69. The screen grid, of tube 64 isener~
through the hollow~conductorj I8.
,
7 While the ampli?er construction of Figs. 5. and
which the apparatus is adapted to operate.’ The
invention has the additional advantage, where
the apparatus includes at least two tuned cir
cuits of the resonant transmission line type, that.
both circuits are simultaneously andaccurate'ly
tuned to the same operatingfrequency, thus
greatly simplifying the adjustment of the appa
ratus for operation over theoperating frequency
range.
.,
.
.
'
._
1 _While there have been described what are at
I present considered‘ to be the preferred embodi
ments of this invention, it will be obvious to those
skilled in the art that various changes and modi
?cations may be madev therein without departing.
fromtheinvention, and it is, therefore, aimed in
the appended claims to cover all such changes,
andamodi?cations as fall within the true spirit
and scope of the invention.
. What is claimed is:
,
'
.
'
1. An, ultra-high-frequency signal-translating"
apparatus comprising, an elongated rigid con
ductor, a ?xed conductive member slidably sup
7Q porting said conductor, means including said con-7.‘
2,404,640
'9'?
10
ductor for forming a resonant circuit tunable
over a range of frequencies by adjustment of
gion of maximum magnetic ?eld intensity about
said conductor remaining stationary in the vicin
the length of said conductor extending from one
side of said member, means movable in unison
with said conductor for supporting vacuum-tube
ity of said one side of said partition over said
range of frequencies, means for moving said con
ductor through said partition to time said res
apparatus and associated circuit elements at the
onant circuit to a predetermined operating fre
quency in said frequency, range, and an output
circuit including a loop disposed in said region
of maximum magnetic ?'eld intensity.
end of said conductor on said ‘one side of said
member, and means for moving said conductor
through said member to tune said resonant cir
cuit to a predetermined operating frequency in 10
6. An ultra-high-frequency signal-translating
apparatus comprising, a pair of elongated rigid
2. An ultra-high-frequency signal-translating
conductors, a ?xed member slidably ‘supporting
apparatus comprising, an elongated rigid conduc
said conductorsiin parallel spaced relation and
tor, a ?xed conductive member having an aper
providing an electrical connection therebetween,
ture in‘ which said conductor is slidably sup 15 said conductors forming at‘ least one resonant
said frequency range.
>
ported, means including said member for com
circuit tunable over a range of frequencies by
pleting an electrical ground connectionto said
conductor substantially at the point of support
thereof by said member, means including said
adjustment of the lengths of said conductors ex
tending from one side of said member, means
movable‘ in unison with said conductors for sup
conductor for forming a resonant circuit tunable 20 porting vacuum-tube apparatus and associated
over a range of frequencies by adjustment of the
circuit elements at the end of said conductors
length of said conductor extending from one side
on said one side of, said member, and means for
of said member, means movable in unison with
moving said conductors in‘unison through said
said conductor for supporting vacuum-tube ap
member to tune said resonant circuit to a pre-'
paratus and associated circuit elements at the 25 determined operating frequency‘ in said fre
end of said conductor on said one side of said
quency range.
'
member, and means for moving said conductor
7. An ultra-high-frequency signal-translating
through said member‘ to tune said resonant cir
apparatus comprising, a pair of elongated rigid
cuit to ,a predetermined operating frequency in
conductors, means including a ?xed member for
said frequency range.
30 slidably supporting‘ said conductors in parallel
3. An _ultra-high-frequency signal-translat
spaced relation and for completing an electrical
ing apparatus comprising, an elongated rigid
connection between said conductors substantial-i
conductor, a ?xed conductive member slidably
ly at the point ‘of support thereof, said. conduc
supporting said conductor, means including said
tors forming at least one resonant circuit tun- ,
conductor for forming a resonant circuit tunable 35 able over a range or frequencies by adjustment
overa range of frequencies by adjustment of the
of the lengths of said conductors extending from
length of said conductor extending from one
one side of said memberymeans movable in uni
side of said member, means for supporting vac
son with said conductors for supporting vacuum
uum-tube apparatus and associated circuit ele
tube apparatus and associated circuitelements
ments on that end of said conductor which is on 40 at the end of said conductors on said one side
said one sidelof said member, and means for
of said member, and means for moving said con
moving said conductor through said member‘ to
ductors in unison through said member to tune
tune, said resonant circuit to a predetermined
said resonant circuit to a predetermined‘ oper
operating frequency in said frequency range.
ating frequency in said frequency range.
4. An ultra-high-frequency signal-translating 45 8. An ultra-high-frequency signal-translating
apparatus comprising, an elongated rigid con
apparatus comprising, three elongated rigid con
ductor, a ?xed member slidably supporting said
ductors, a ?xed member slidably supporting said
conductor and providing an electrical connec
conductors in parallel spaced relation and pro
tion thereto, means including said conductor for
viding an electrical connection ltherebetween,
forming a resonant circuit tunable over a range 50 said‘ conductors forming two, resonant circuits
of'frequencies in accordance with the length of
having one conductor common to each and tun
said conductor extending from one side of said
able over a‘range of frequencies by adjustment
member, the region of maximum magnetic ?eld
of the lengths of the other two of said conduc
intensity about said conductor remaining sta
tors extending from one side of said member,
tionary in the vicinity of said one side of said‘ 55 means movable in unison with‘ said conductors
member over said range of frequencies, means
for supporting vacuum-tube apparatus and as
for, moving said conductor through said member
sociated circuit elements at the end of said other
to tune said resonant circuit to a predetermined
two conductors on said one side of said member,
operating frequency in said frequency range, and
and means ‘for‘moving said conductors in uni
an output circuit including a loop disposed‘ in 60 son through said member simultaneously to tune
said region of maximum magnetic ?eld intensity.
both of said resonant circuits over the same fre
5. An ultra-high-frequency signal-translating
quency range.
apparatus comprising, an elongated metallic
9. An ultra-high-frequency signal-translating
housing, a conductive apertured partition dis
apparatus comprising, three elongated rigid con
posed transversely within said housing to divide 65 ductors, a ?xed member slidably supporting said
the interior thereof into two chambers, an elon
conductors in parallel spaced relation and pro
gated rigid conductor, means for slidably sup
viding an electrical connection therebetween, said
porting said conductor in an aperture of said
conductors forming two resonant circuits having
partition and for making an electrical connec
one conductor common to each and tunable over
tion between said conductor and said partition 70 a range of frequencies by adjustment of the
at a ?xed point near said partition, means in
cluding said conductor for forming a resonant
circuit tunable over a range of frequencies by
adjustment of the length of said conductor ex
tending from one side of said partition, the re 75
lengths of the other two of said conductors ex
tending from one side of said member‘, each of said
other two of said conductors having a maximum
magnetic ?eld intensity thereabout which remains
stationary in the vicinity of said one side of said
55,404,346»
12
member over said range of frequencies, means
for moving said conductors in unison through said
memberisimultaneously to tune both of said
resonant ‘circuits over the same frequency range,
and input and output circuits'including input and.
output loopsdisposed in individual ones of said‘
regions of maximum magnetic ?eld intensity.
. 1'0. An ultra-high-frequency signal-translat
tween, said conductors ‘forming at least one
resonant circuit tunable over a'range'of ire-i‘
quencies by adjustment of the lengths of said
conductors extending from one side of said’meméi
ber and the region of maximum magnetic ?eld"
intensity about said conductors" remaining 1 Sta;
tionary in the vicinity of said one side of said
member over said range of frequencies,lmeans'
ing apparatus comprising, an elongated rigid
for moving said conductors in unison througlli'sai'cl
tubular conductor, a ?xed ‘member slidably sup 1105 member to tune said resonant circuit to aiprée
porting said conductor and ‘providing an elec
determined operating frequency in said frequency»
, trical connection thereto; means including said
range, and an output-circuit including a ‘loop dis
conductorifor forming a resonant circuit tunable
posed in said region I of maximum- magnetic Y?eldi
over a, range of frequencies by adjustment of the
lengthiof said conductor extendingfrom one side
of. said member, means for ?xedly supporting
vacuum-tube apparatus and associated circuit
intensity.
7
'
'
'
"
’
'
13. An ultrahigh-frequency-signal-translat-' ‘
ing apparatus comprising, an- elongated rigid cbnjé:v
elements on that end of said conductor which is
onisaid one side of said member, an electric. cir
ductor, a ?xed conductive member slidably‘sup~i
porting‘ said conductor, means including said eon?
ductor for forming a resonant circuit tunable over
cuityextending through said conductor and elec
a range of-frequencies by adiustmentofthe length
trically insulated therefrom‘ for energizing said
of said conductor extending from one‘ side of said‘
vacuum-tube apparatus,’ and means for moving
said: conductor through said member to. tune said
resonant circuit to a predetermined operating
member, the region of maximum magnetic field'
intensity' about saidconductor remaining station-1‘
ary in the vicinity of said‘ one sidelof said member"
frequency in said frequency range.
255? over said range of frequencies, means for moving“
11. An ultra-high-frequency signal-translating
said conductor through said member‘ to tune said»
apparatus comprising, an elongated metallic hous
resonant circuit to a predetermined operating ire-4
ing, a ‘conductive apertured partition disposed
quency in said frequency range,» and an induct-r
transversely Within said housing to. divide the‘
ance typeof piston. attenuator ?xedly positioned‘
interiorthereof into two chambersia plurality of 303 with respect to said conductive member‘ and in'-'-~
elongated rigid tubular conductors, means for
eluding- a loop movable intoand out of said region
slidibly supporting said conductors in individual
apertures of said partition and for making an
, 'electricalconnection between said conductors and
said: partition at a ?xed point near said partition,
of maximum ?e1dintensity,-. ‘ \ it
w‘
14. In an ultra-high-frequency' signalétransa-a‘
latingv apparatus, a?pushepul-l oscillator .com~pris~
351 ing, a, ‘plurality of elongated rigid conductors; a
means including said conductors for forming at
?xed. conductive member slidablygsiipportingi said‘
least one' resonant circuit tunable ‘over a range»
conductors, means including-said conductorsrfor
of frequencies by adjustment of the lengths of
7 said, conductors extending from one side of said
forming at least- one resonant circuit-tunable»
over a range ofifrequencies by adjustment of the
partition, the region of‘ maximum magnetic ?eld 40 lengths of said. conductors extending from one;
intensity about said conductors remaining sta
side of said member, the region of maximum mag-7
tionary in the» vicinity of said one side of said‘
netic ?eld intensity aboutsaid conductors remain- ,
partition over said range of, frequencies, means
ing stationary inthe vicinity of said one. side of.
for moving said conductors through said parti
saidmember over said range of frequencies, means.
tion to tune said resonant circuit to a predeter
for moving said‘, conductors, through ‘said mem
mined ‘operating frequency in 1 said frequency
ber to ‘tune said resonant circuit to: a predator.»
range, means movable in, unison with said conduc
‘mined, operating frequency in said frequency’
tors for supporting vacuum-tube apparatus and
range, means movable in unison, with said‘ con
associated circuit elements in one-of said cham
_ ductors for supporting a pair of vacuum tubes and ‘
berls, currentpsupply means in the other of saidv
‘- associated circuit elements at the end of said (1011- v
' chambers, current supply leads'extending througlii
ductors on said.- one side. of saidmem‘ber, means
for connecting thev output electrodes. of said ‘
vacuum tubesto individual ones ofjsaid conductors‘.
saidconductors and electrically insulated there
from for. energizing said vacuum-tube apparatus
from said current supply means, and an output
and‘ for coupling. the input electrodes of said:
circuit including a loop disposed in. said region of 551 vacuum tubes to individual other. ones. of said
maximum magnetic ?eld intensity.
~
conductors to. provide; a balanced push-pull oscil
-Vl2. An ultra-high-frequency signal-translat
ing apparatus comprising, a pair of,‘ elongated
rigid conductors, a ?xed member slidably'support
ing, said conductors in parallel spaced relation
and providing an, electrical connection therebe
lator, and an output circuit including a loop dis‘- .
posed inthe region of maximum magnetic ?eld
intensity of at least one of said conductors.
RICHARD B.‘ LAWRANTCE; '‘ o
,
Документ
Категория
Без категории
Просмотров
0
Размер файла
1 337 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа