scholarly journals ANALYSIS PERFORMANCE OF TRIANGLE MICROSTRIP ANTENNA FOR BASIC CONSTRUCTION OF CIRCULARLY POLARIZED-SYNTHETIC APERTURE RADAR APPLICATION

2018 ◽  
Vol 80 (2) ◽  
Author(s):  
Muhammad Fauzan Edy Purnomo ◽  
Akio Kitagawa
Keyword(s):  
Synthetic Aperture Radar ◽  
Equilateral Triangle ◽  
Axial Ratio ◽  
Geostationary Satellite ◽  
The Body ◽  
Synthetic Aperture ◽  
Circularly Polarized ◽  
Performance Results ◽  
Operation Frequency ◽  
Aperture Radar

The development of radar technology, Synthetic Aperture Radar (SAR), Circularly Polarized-Synthetic Aperture Radar (CP-SAR) and geostationary satellite, demanding needs of communication facilities and infrastructures that have variety platforms, which can generate processed data with high resolution and better image quality for all types of explored terrain. Owing to the antenna embedded on the body of geostationary satellite, its shape should be compact, small, and simple configuration, i.e. the equilateral triangle with and without truncated-tip c1, c2, c3, and c3s antennas using probe and microstrip-line feed with low-power at S-band (2.5 GHz - 2.9 GHz). The Method of Moments (MoM) is chosen in the numerical analysis for fast calculation. The performance results for c2 and c3 antennas are almost same, for instance the values of gain and axial ratio (Ar) for each antenna are consecutive of 6.8 dBic and 0.42 dB. Moreover, the performance results for c1, c3, and c3s antennas at the each resonant frequency are relatively different, as follows: c1 antenna operates at the frequency 2.76 GHz, gain RHCP = 6.66 dBic, Ar = 2.91 dB, the operation frequency of c3 antenna is 2.9 GHz, gain LHCP = 6.98 dBic, Ar = 3.02 dB, and for c3s antenna has the operation frequency of 2.5 GHz, gain LHCP = 6.08 dBic, Ar = 1.75 dB. The results for both simulation and measurement of equilateral triangle antenna, especially for Ar bandwidth below 3-dB are about 0.02 GHz and 0.015 GHz, respectively. Furthermore, the results of the 3 dB-Ar beamwidth for simulation and measurement in elevation plane consecutively are about 120° and 80°.

scholarly journals Desain Antena Mikrostrip Segitiga Terpancung Tunggal LHCP Patch Stack sebagai Basic Sensor CP-SAR

2020 ◽  
Vol 1 (2) ◽  
pp. 79-84
Author(s):  
Muhammad Fauzan Edy Purnomo
Keyword(s):  
Synthetic Aperture Radar ◽  
Circular Polarization ◽  
Method Of Moments ◽  
Axial Ratio ◽  
Synthetic Aperture ◽  
Circularly Polarized ◽  
Left Handed ◽  
S Parameter ◽  
Radar Applications ◽  
Aperture Radar

The development of SAR radar technology (Synthetic Aperture Radar) and aircraft as the carrier media is relatively fast and demands the need for communication facilities and infrastructure that have a variety of platforms and high-quality imaging, which can produce processed data with high resolution and good images for all type explored terrain. Based on the demands of the progress of civilization, the antenna placed on the carrier media should have simple, compact, thin, and conformal characteristics. This research will analyze and study the need for a single, low power microstrip antenna in the L-band (1.25 GHz - 1.27 GHz) for CP (Circularly Polarized)-SAR radar applications. The use of Method of Moments (MoM) show that the result of characteristic performance and S-parameter for the single triangular truncated patch stack Left-Handed Circular Polarization (LHCP) antenna, f = 1.25 GHz, are consecutively 7.23 dBic of gain, 0.51 of axial ratio, -16.35 dB of S-parameter. Moreover, the 3-dB axial ratio bandwidth LHCP antenna is around 15 MHz or the percentage around 1.2%                 Perkembangan teknologi radar SAR (Synthetic Aperture Radar) dan pesawat terbang sebagai media pembawanya relatif cepat dan menuntut kebutuhan sarana dan prasarana komunikasi yang memiliki ragam platform dan pencitraan yang berkualitas tinggi, yang mampu menghasilkan data olahan dengan resolusi tinggi dan gambar yang baik untuk segala jenis medan yang dijelajahi. Berdasarkan tuntutan kemajuan peradaban zaman, maka antena yang diletakan pada media pembawa tersebut, seyogyanya memiliki karakteristik sederhana, compact, tipis, dan conformal. Dalam makalah ini akan dianalisis dan dikaji kebutuhan antena mikrostrip tunggal berdaya rendah pada pita L (1,25  GHz - 1,27 GHz) untuk aplikasi radar CP (Circularly Polarized)-SAR. Penggunaan Method of Moments (MoM) menunjukkan bahwa hasil performansi karakteristik dan S-parameter untuk antena segitiga terpancung tunggal Left-Handed Circular Polarization (LHCP)  patch stack, f = 1.25 GHz, berturut-turut yaitu gain sebesar 7.23 dBic, axial ratio sebesar 0.51, dan S-parameter sebesar -16.35 dB. Selain itu, bandwidth axial ratio 3-dB antena LHCP sekitar 15 MHz atau persentasinya sebesar 1,2%.

scholarly journals Triangular Microstrip Antenna for Circularly-Polarized Synthetic Aperture Radar Sensor Application

2018 ◽  
Vol 12 (1) ◽  
pp. 310 ◽  
Author(s):  
Muhammad Fauzan Edy Purnomo ◽  
Akio Kitagawa
Keyword(s):  
Resonant Frequency ◽  
Synthetic Aperture Radar ◽  
Circular Polarization ◽  
Axial Ratio ◽  
Microstrip Antennas ◽  
Synthetic Aperture ◽  
Power Divider ◽  
Circularly Polarized ◽  
S Parameter ◽  
Aperture Radar

<p>In this paper, we obtain the basic construction of triangular microstrip antennas based on the analysis of the single patch and array two patches. This construction use the basic corporate feeding-line with modified lossless T-junction power divider for Circularly Polarized-Synthetic Aperture Radar (CP-SAR) sensor embedded on airspace with compact, small, and simple configuration. The design of Circular Polarization (CP) is realized by truncating the whole three tips and adjusted the parameters of antennas at the resonant frequency, f = 1.25 GHz. The equations for reciprocal, lossless, and matched of the modified lossless T-junction power divider are also described. The result of characteristic performance and S-parameter for the single patch both Left-Hand Circular Polarization (LHCP) and Right-Hand Circular Polarization (RHCP) at the resonant frequency show consecutively 7.15 dBic and 7.16 dBic of gain, 0.12 dB and 0.11 dB of axial ratio, -26.75 dB and -26.72 dB of S-parameter. For array two patches, the result of gain, axial ratio, and S-parameter both of LHCP and RHCP are 7.63 dBic, 7.62 dBic, 2.68 dB, 2.74 dB, -19.43 dB, and -19.40 dB, respectively. The modified lossless T-junction power divider both for LHCP and RHCP are capable of being reciprocal, matched, and lossless at all ports.</p>

scholarly journals Airborne Circularly Polarized Synthetic Aperture Radar

2020 ◽  
pp. 1-1
Author(s):  
Josaphat Tetuko Srisumantyo ◽  
Ming Yam Chua ◽  
Cahya Edi Santosa ◽  
Good fried Panggabean ◽  
Watanabe Tomoro ◽  
...  
Keyword(s):  
Synthetic Aperture Radar ◽  
Synthetic Aperture ◽  
Circularly Polarized ◽  
Aperture Radar

Polarimetric calibration of circularly polarized synthetic aperture radar data

2017 ◽  
Vol 55 (12) ◽  
pp. 6824-6839 ◽  
Author(s):  
Paul Pincus ◽  
Mark Preiss ◽  
Alvin S. Goh ◽  
Douglas Gray
Keyword(s):  
Synthetic Aperture Radar ◽  
Radar Data ◽  
Synthetic Aperture ◽  
Synthetic Aperture Radar Data ◽  
Circularly Polarized ◽  
Aperture Radar ◽  
Polarimetric Calibration

Development of circularly polarized synthetic aperture radar on-board UAV JX-1

2017 ◽  
Vol 38 (8-10) ◽  
pp. 2745-2756 ◽  
Author(s):  
J. Tetuko S. S. ◽  
V.C. Koo ◽  
T. S. Lim ◽  
T. Kawai ◽  
T. Ebinuma ◽  
...  
Keyword(s):  
Synthetic Aperture Radar ◽  
Synthetic Aperture ◽  
Circularly Polarized ◽  
Aperture Radar

A novel circularly polarized synthetic aperture radar (CP-SAR) system onboard a spaceborne platform

2010 ◽  
Vol 31 (4) ◽  
pp. 1053-1060 ◽  
Author(s):  
P. Rizki Akbar ◽  
J. Tetuko S. S. ◽  
H. Kuze
Keyword(s):  
Synthetic Aperture Radar ◽  
Synthetic Aperture ◽  
Circularly Polarized ◽  
Aperture Radar
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