How to cite:
Putu Artawan. (2022). Analysis of Novel Curve Microstripline Array
Antenna Design In X Band Frequency for Satellite Communication.
Journal Eduvest. Vol 2(2): 406-414
E-ISSN:
2775-3727
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Eduvest – Journal of Universal Studies
Volume 2 Number 2, February 2022
p- ISSN 2775-3735 e-ISSN 2775-3727
ANALYSIS OF NOVEL CURVE MICROSTRIPLINE ARRAY
ANTENNA DESIGN IN X BAND FREQUENCY FOR
SATELLITE COMMUNICATION
Putu Artawan
Ganesha University of Education, Singaraja, Bali, Indonesia
Email: [email protected]
ARTICLE INFO ABSTRACT
Received:
January, 26
th
2022
Revised:
February, 17
th
2022
Approved:
February, 18
th
2022
The design of a novel curve microstripline 2x2 array
antenna is presented in this research. In this design,
antenna work in X Band frequency. The total size of
antenna is 40mm x 40mm. The result indicates that the
antenna characteristics parametric showed by Voltage
Standing Wave Ratio (VSWR≤2) of the proposed antenna is
1.06 (in simulated); 1.29 (in measured) and 1.20 (in numeric
analyzed), bandwidth is 260.0 MHz (in simulated) and 310.0
MHz (in measured) and reflection coefficient is 0.03 (in
simulated) and 0.17 (in measured) and return loss is -
29.43dB (in simulated) and -27.12dB (in measured)
respectively. The antenna has achieved a stable radiation
performance with a maximum gain of 6.67dB (in simulated)
and 5.53dB (in mesured). Novel curve microstripline 2x2
array antenna with 50 Ohm impedance and easy
integration are making this model suitable for X-Band
frequency (8GHz-12GHz) satellite communication
applications. Details of the proposed antenna design and
results are presented and discussed.
KEYWORDS
2x2 Array; Microstripline Antenna; Satellite
Communication
This work is licensed under a Creative Commons
Attribution-ShareAlike 4.0 International
Putu Artawan
Analysis of Novel Curve Microstripline Array Antenna Design In X Band Frequency for
Satellite Communication 407
INTRODUCTION
To design and analyze the shape and size of the antenna required special
knowledge regarding the electromagnetic field theory. Electromagnetic fields generated
depend on the distance of the source access and terrain. The further course of
electromagnetic fields produced less meaning in the spreading process electromagnetic
waves from the transmitter to the receiver experiencing attenuation (weakening) signals.
Therefore, the required antenna design with specific dimensions that have a high gain
value and high directivity with return loss is very small. [1,2,10,11]. Various studies have
been conducted on microstrip antenna type [1,2,8,10,11,12,13,14,16], among which is to
perform a wide variety of designs and shapes microstrip antenna, by giving the slot [18]
and patch microstrip antenna and adding to the number of the array [17]. Use of the slot
will be able to increase the bandwidth [15], the smaller the width of the slots will be even
greater bandwidth while increasing the number of arrays will increase the directivity and
the gain of the antenna [3,4]. The array of Antenna [17,19] is used to direct radiated
power toward a desired angular sector. The number, geometrical arrangement, and
relative amplitudes and phases of the array element depend on the angular pattern that
must be achieved. One type of antenna that will be designed to have the characteristics in
question are novel curved microstripline array antennas design. This antenna is an
antenna type Microstrip with the characteristics of a thin cross-section, the mass that is
lightweight, easy to make, can be easily integrated with Microwave Integrated Circuits
(MICs) and can be made to multifrequency [5,6,7,9]. In this paper Novel curved
microstripline array antenna design is propose to develope in X-Band frequency for many
satellite communications transmisions. The proposed Novel curved microstripline array
antenna is afford to operate in X-Band frequency in range 8 GHz – 12 GHz. The target of
Novel curved microstripline array antenna is in 10.0 GHz center frequency, reflection
coefficient or return loss (S
11
parameter) less than –10dB, Voltage Standing Wave Ratio
(VSWR) less than 2, input impedance close to 50, and gain more than 4dB in linear
polarization, respectively. Can be seen in Table 1.
To design and analyze the shape and size of the antenna required special
knowledge regarding the electromagnetic field theory. Electromagnetic fields generated
depend on the distance of the source access and terrain. The further course of
electromagnetic fields produced less meaning in the spreading process electromagnetic
waves from the transmitter to the receiver experiencing attenuation (weakening) signals.
Therefore, the required antenna design with specific dimensions that have a high gain
value and high directivity with return loss is very small. [1,2,10,11]. Various studies have
been conducted on microstrip antenna type [1,2,8,10,11,12,13,14,16], among which is to
perform a wide variety of designs and shapes microstrip antenna, by giving the slot [18]
and patch microstrip antenna and adding to the number of the array [17]. Use of the slot
will be able to increase the bandwidth [15], the smaller the width of the slots will be even
greater bandwidth while increasing the number of arrays will increase the directivity and
the gain of the antenna [3,4]. The array of Antenna [17,19] is used to direct radiated
power toward a desired angular sector. The number, geometrical arrangement, and
relative amplitudes and phases of the array element depend on the angular pattern that
must be achieved. One type of antenna that will be designed to have the characteristics in
question are novel curved microstripline array antennas design. This antenna is an
antenna type Microstrip with the characteristics of a thin cross-section, the mass that is
lightweight, easy to make, can be easily integrated with Microwave Integrated Circuits
(MICs) and can be made to multifrequency [5,6,7,9]. In this paper Novel curved
microstripline array antenna design is propose to develope in X-Band frequency for many
Eduvest – Journal of Universal Studies
Volume 2 Number 2, February 2022
408 http://eduvest.greenvest.co.id
satellite communications transmisions. The proposed Novel curved microstripline array
antenna is afford to operate in X-Band frequency in range 8 GHz – 12 GHz. The target of
Novel curved microstripline array antenna is in 10.0 GHz center frequency, reflection
coefficient or return loss (S
11
parameter) less than –10dB, Voltage Standing Wave Ratio
(VSWR) less than 2, input impedance close to 50, and gain more than 4dB in linear
polarization, respectively. Can be seen in Table 1.
Table 1. Target of the antenna parameter.
Parameters
Specification
Center Frequency
10.0 GHz
Input Impedance
Close to50
S
11
(Return Loss)
< -10dB
VSWR
< 2
Gain
> 4dB
Polarization
Linear (Vertical)
RESEARCH METHOD
Antenna geometry and design
The parameters of the Novel Curved Microstripline Array Antenna Design consist
of the following table. (Table.2):
Table 2. Dimension Parameter of the Novel Curved Microstripline Array
Antenna Design.
Parameters
Description
Wg
Width
T
Thick
Lg
Length
H
High
l
1
Length of feeding stripline
l
2
= l
3
Length of curve stripline
w
1
= w
2
Width of stripline
w
3
Width of curve stripline
Gradient in curve line
The Curved Microstripline Array Antenna Dimension can be seen in Figure 1:
Figure 1. Curved Microstripline Array Antenna Dimension
The result of fabrication using FR
4
substrate can be seen in the following figure
(Figure 2):
lg
wg
W
1
W
2
W
3
l
1
l
2
l
3
Putu Artawan
Analysis of Novel Curve Microstripline Array Antenna Design In X Band Frequency for
Satellite Communication 409
(a) (b)
Figure 2. The fabricated prototype Curved Microstripline Array Antenna.
(a) Top View (b) Back View
The simulations was created by using CST software. The result of simulation is
presented in figure 3.
(a) (b) (c)
Figure 3. Simulation result Curved Microstripline Array Antenna.
a) Top View (b) Side View (c) Bottom View
The following figure (Figure.4) is Measuring Antenna at Laboratory.
(a) (b)
Figure 4. Measuring Process at Laboratory.
Eduvest – Journal of Universal Studies
Volume 2 Number 2, February 2022
410 http://eduvest.greenvest.co.id
RESULT AND DISCUSSION
In simulation Curved Microstripline Array Antenna work in 9.89 GHz frequency
with bandwidth range aproximately 260.0 MHz (9.72 GHz – 9.98 GHz). The simulation
result shown the antenna works well within the design frequency range. This indicate that
the novel curved microstripline array antenna giving the good effect in bandwidth and
antenna performance that can be apllied in communication especially in X-Band
frequency range. The simulation shown in S
11
parameter is reflection coefficient 0.03,
Voltage Standing Wave Ratio (VSWR) 1.06, return loss -29.43 dB and 6.67 dB in Gain.
In measurement Curved Microstripline Array Antenna work in 9.84 GHz frequency with
bandwidth range aproximately 310.0 MHz (9.66 GHz – 9.97 GHz), reflection coefficient
0.17, Voltage Standing Wave Ratio (VSWR) 1.29, return loss -27.12 dB and 5.53 dB in
Gain. The results of measuring and simulation can be described in the following figure
(Fig. 5):
a) S
11
Parameter.
-35
-30
-25
-20
-15
-10
-5
0
8.5 9 9.5 10 10.5 11
Return Loss (dB)
Frequency (GHz)
S
11
PARAMETER
Simulat
ed
0
2
4
6
8
10
12
9,00
9,05
9,11
9,16
9,22
9,27
9,32
9,38
9,43
9,49
9,54
9,60
9,65
9,70
9,76
9,81
9,86
9,92
9,97
VSWR
Frequency (GHz)
VSWR
Simulated
Measured
Putu Artawan
Analysis of Novel Curve Microstripline Array Antenna Design In X Band Frequency for
Satellite Communication 411
b). VSWR.
c). Gain
Figure 5. The result of Novel Circular Microstrip Patch Antenna.
The polarization and radiation pattern in curved microstripline array antenna is
linear polarization and omnidirectional radiation pattern. The performance in terms of
polarization in Curved Microstripline Array Antenna presented in Figure 6.
Figure 6. The Polarization of the Curved Microstripline Array Antenna
A maximum gain in simulation is 6.67dB and in measurement is 5.53dB. That
results to indicate that the Curved Microstripline Array Antenna gain is still acceptable
for the X-Band antenna frequency.
-2
0
2
4
6
8
10
8,50
8,61
8,73
8,84
8,96
9,07
9,19
9,30
9,42
9,53
9,65
9,76
9,88
9,99
10,11
10,22
10,34
10,45
10,57
Gain (dB)
Frequency (GHz)
GAIN
Simulated
Measured
Eduvest – Journal of Universal Studies
Volume 2 Number 2, February 2022
412 http://eduvest.greenvest.co.id
Figure 7. 3D Far Field Polarization Pattern of the Curve Microstripline 2x2 Array
Antenna.
In general, the proposed antenna is designed to operate at X-Band and it can be
observed from return loss and gain in antenna design that this antenna is suitable for
being used in satellite communication. It can be easily observed from the radiation pattern
that the designed antenna produces linear vertical polarization radiation pattern. There are
some significant advantages if a patch antenna has a stable and symmetrical in radiation
pattern. One of the major advantages is that during construction of an antenna, the
radiation pattern would be more stable across the operating bandwidth.
CONCLUSION
The following table (Table.3) is summarizing the comparison between numeric analyzed,
simulated and measured.
Table. 3. The result of comparison between numeric analyzed, simulated and
measured.
These results indicate that the novel curved microstripline array antenna designed
has the characteristics of antenna parameters that can be applied in X-Band frequency
communications. In the next research, from this design will be develope to antenna design
in Curved Microstripline Array Antenna with the circular polarization.
Parameters
fc (GHz)
RL (dB)
VSWR
Numeric Analyzed
10.00
-20.92
1.20
0.09
Simulated
9.89
-29.43
1.06
0.03
Measured
9.84
-27.12
1.29
0.17
Putu Artawan
Analysis of Novel Curve Microstripline Array Antenna Design In X Band Frequency for
Satellite Communication 413
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