вход по аккаунту



код для вставкиСкачать
16x8 Wideband Microstrip Planar Array Antenna for
E-Band Millimeter-Wave 5G High Speed WLAN and
Broadband Internet Applications
Ahmed Hassanien1
W. Swelam2, Mohamed H. Abd El Azeem2
Electronics and communication dept.
MUST University in Egypt
6th October, Egypt.
Electronics and communication dept.
AAST Academy in Egypt
Cairo, Egypt.
Abstract—In this paper the design, and simulation of a 16x8
wideband microstrip planar array antenna which covers E- band
frequency from 81 GHz up to 86 GHz with 5GHz bandwidth has
been investigated and more than 14 dBi gain has been achieved.
The designed array etched on Rogers RO-3003 substrate which
enables it to be used in high speed point to point wireless local area
networks and broadband internet access applications.
element doesn’t fulfil directivity requirement for point-to-point
applications. The final section gives the conclusion.
Maintaining the Integrity of the Specifications
Keywords— Microstrip Patch Antenna (MSA), Antenna Array,
E-band frequency, mm-wave applications, 5G.
Telecommunications have experienced an exponential
growth over the past three decades. The amount of data which
the average person uses keeps increasing at exponential rates in
the present day [1]. This growth is more noticeable in the
evolution of wireless communications . The needs for higher
speed have increased accordingly, making researchers search
for means to improve the data rates. Frequency band from
30GHz up to 300GHz is called Millimeter-wave “mm-wave”.
This band will expand channel bandwidths which results in
increasing the capacity and decreasing the latency [2]. This
band also allows new applications such as information
showering, vehicular application, replacing wired connection
on chips and data centers [2]. This paper deals especially with
The E-band Frequencies which covers (71-76, 81-86 and 91-95
GHz) [3]. These bands have very little attenuation below
1dB/km as shown in Fig.1(a) which making them suitable for a
long distance mobile and a backhaul application [2]-[4]. Shorter
wavelengths for these bands allow using smaller antenna than
would be required for similar in lower bands and achieve high
gain and directivity. According to these bands signal
characteristics and narrow beam width increasing the chance to
design closer systems without causing interference as compared
to microwave antennas [2]-[5] as shown in Fig.1(b). High
directivity of these bands increasing the ability for more
efficient use of spectrum for point to point applications and
higher reuse of the spectrum as compared to lower frequencies.
These frequency bands also have many other advantages such
cost-effective high data rate solution, secure data
communications, this spectrum could be used as a replacement
for fiber optics [2]-[5]. The following sections show the design,
results and discussion of the antenna array since the single
978-1-5386-3284-0/17/$31.00 ©2017 IEEE
Fig. 1. (a) Attenuation chart [3] , (b) Beam-width of millimeter wave and
microwave [5]
In this paper Rogers RO-3003 has been used as a
substrate with dielectric constant, εr =3, and height, h=
0.127mm. The Rogers RO-3003 substrate was selected because
of its favourable properties for millimetre-wave fabrication, its
affordable price, and because it possesses the lowest losses
among Rogers's commercial line level laminates [6]. All
analysis and simulations throughout this paper were carried out
using the finite element method (FEM) that uses commercial
software Ansoft High Frequency Structure Simulator
HFSS .This paper is started by the design of a single microstrip
patch antenna with patch dimensions calculated from
microstrip equations [7] etched on previous substrate which
operates at 80 GHz frequency as shown in Fig.2 (a), but Fig.2
(b) shows the design of 1x16 series array element with
0.6023mm spacing between elements with total length
27.387mm using series feeding [7].“Ref. [7] shows the concept
of the quarter wave length transformers as shown in Fig.3
(a),but Fig.3 (b) shows the design of 1x8 feeding network by
using this technique” .The design of the 16x8 microstrip patch
planar array antenna which consists of 128 patches and feeding
network with total length 28.994mm and width 23.87mm is
shown in Fig.4.
AP-S 2017
Fig. 2. (a) Single element microstrip patch at 80GHz with dimension 1.3 mm
by 1 mm using HFSS. (b) 1x16 single array element series feeding and spacing
between elements.
Fig. 6. The 8x16 microstrip planar array antenna VSWR.
Radiation Pattern 15
Curve Info
Setup1 : LastAdaptive
Freq='83GHz' Phi='0deg'
Fig. 3. (a) Quarter wave length transformers [7]. (b) 1x8 feeding network
Fig. 7. The 8x16 microstrip planar array antenna gain.
An 8 x 16 array gives return loss s11 less than -10 dB in the
range from 81 GHz to 86 GHz with 5GHz bandwidth which
covers E-band as shown in Fig.5. It has been seen that the
bandwidth was improved by 5 times as compared with
bandwidth results in [8] by optimizing distance between
elements, but Fig.6 shows the VSWR is less than 2 from 81 GHz
up to 86 GHz with 5GHz bandwidth and 90% efficiency, but
Fig.7 shows the gain more than 14 dBi but it has high side lobe
about 5 dBi with total gain difference 9.384 dBi. This high side
lobe due to increasing the element spacing towards λ and can be
decrease by using different techniques such as using another
substrate with lower dielectric constant, or increasing the
number of elements.
This paper shows the design and the simulation of an
8x16 wideband microstrip planar array antenna etched in
Rogers RO-3003 substrate. that is can work for high speed point
to point wireless local area networks and broadband internet
access Applications due to its narrow beamwidth, In the
millimetric E-frequency band with good matching is achieved
with return loss S11 less than -10 dB within the total frequency
bandwidth from 81 GHz up to 86 GHz with resonant frequency
83.1 GHz at -22.22 dB return loss. Total bandwidth 5GHz is
achieved with more than 14 dBi with variation of 1.5 dB.
Fig. 4. 8x16 microstrip planar array antenna design.
Fig. 5. The return loss S11 for 8 x 16 elements.
Cisco, “The zettabyte era: Trends and analysis (white paper)," 2015.
Rappaport, Theodore S., et al. Millimeter wave wireless communications.
Pearson Education, 2014. .
Gaucher, Mr Brian, Ulrich Pfeiffer, and Janusz Grzyb. "Advanced
millimeter-wave technologies." (2009).
Millimeter Wave mobile communications for 5g cellular.
“ ”. .
Balanis, Constantine A. Antenna theory: analysis and design. John Wiley
& Sons, 2016.
Swelam, W. "80GHz array antenna for mm-wave applications." Antennas
and Propagation (EuCAP), 2014 8th European Conference on. IEEE,
Без категории
Размер файла
382 Кб
2017, 8073349, apusncursinrsm
Пожаловаться на содержимое документа