scholarly journals Development Of Circular Polarization 5.5 Ghz Microstrip Antenna E-Shaped For Synthetic Aperture Radar Communication

2021 ◽  
Vol 328 ◽  
pp. 02010
Author(s):  
Kunto Aji Wibisono ◽  
Riza Alfita ◽  
Alfian Nur Rahman ◽  
Farohaji Kurniawan ◽  
Adi Kurniawan ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Reflection Coefficient ◽  
Synthetic Aperture Radar ◽  
Circular Polarization ◽  
Microstrip Antenna ◽  
Axial Ratio ◽  
Synthetic Aperture ◽  
Measurement Result ◽  
Left Handed ◽  
Aperture Radar

This paper presents development of circular polarization 5.5 GHz microstrip antenna E-shaped for synthetic aperture radar Communication. Microstrip antenna designed Truncated E-shaped the centered frequency is 5.5 GHz and bandwidth that is wide 200 Mhz for Synthetic Aperture Radar communication. The proposed antenna on 1.6 mm thickness of FR-4 substrate with the dielectric constant 4.6. The best simulated result can achieve -10dB reflection coefficient bandwidth 600 Mhz, VSWR 1,578, gain 5,67 dbiC and axial ratio 2,947 with left-handed circular polarization. The best measurement result can achieve -10 dB reflection coefficient bandwidth 951 MHz (5.304-6.255), VSWR 1,25, gain 6,17 dBiC with left-handed circular polarization.

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%.

Dual-layered polarization and frequency reconfigurable microstrip antenna by rotating breach-truncated circular radiator

2017 ◽  
Vol 9 (8) ◽  
pp. 1705-1712
Author(s):  
Haixiong Li ◽  
Yunlong Gong ◽  
Jiakai Zhang ◽  
Jun Ding ◽  
Chenjiang Guo
Keyword(s):  
Reflection Coefficient ◽  
Circular Polarization ◽  
Microstrip Antenna ◽  
Axial Ratio ◽  
Axial Rotation ◽  
Polarization Characteristic ◽  
The Novel ◽  
Test Results ◽  
Left Handed ◽  
Mechanical Rotation

In this study, a dual-layered polarization and frequency reconfigurable microstrip antenna is proposed based on sequential mechanical axial rotation of the circular metal radiator. The antenna can be reconfigured among three different polarized modes, including the linear polarization (LP), left-handed circular polarization and right-handed circular polarization in the band from 4.68 to 4.80 GHz (2.53%). The resonance frequency of the proposed antenna with the same LP mode could also be tuned in the range from 4.70 to 5.03 GHz by mechanical rotation of the breach-truncated circular metal radiator as well as the circular substrate. Furthermore, the polarization characteristic and frequency can be reconfigured, respectively, as the circular radiator is taken an axial rotation with an angle of 360°. The presented antenna in the four different states has been numerically simulated and fabricated for the experimental measurement, the investigated characteristics includes the port reflection coefficient, axial ratio, radiation pattern, gain, and the radiation efficiency. The simulated and test results agreed well with each other. This antenna enriches the novel mechanical reconfigurable method except for the popular electrical approach.

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>

Design of wideband microstrip antenna array at L-band for synthetic aperture radar applications

2013 ◽  
Vol 55 (4) ◽  
pp. 903-908
Author(s):  
Devendra Kumar Sharma ◽  
Balendu Kumar Pandey ◽  
Sanjeev Kulshrestha ◽  
S. B. Chakrabarty ◽  
Rajeev Jyoti
Keyword(s):  
Synthetic Aperture Radar ◽  
Antenna Array ◽  
Microstrip Antenna ◽  
Synthetic Aperture ◽  
Microstrip Antenna Array ◽  
Radar Applications ◽  
L Band ◽  
Aperture Radar

A Novel Right Handed Circular Polarization Folded Reflectarray Antenna at 60 GHz

2017 ◽  
Vol 7 (3) ◽  
pp. 1580
Author(s):  
Mohd Fairus Mohd Yusoff ◽  
Ronan Sauleau ◽  
Zaharah Johari ◽  
Mohamad Kamal A. Rahim ◽  
Huda A. Majid
Keyword(s):  
Reflection Coefficient ◽  
Circular Polarization ◽  
Axial Ratio ◽  
Unit Cell ◽  
60 Ghz ◽  
Radiation Patterns ◽  
Circularly Polarized ◽  
Left Handed ◽  
Antenna Directivity ◽  
Reflectarray Antenna

A novel right-handed circular polarization (RHCP) folded reflectarray antenna with optimized parameters is presented at 60GHz. The RHCP folded reflectarray antenna is designed using left handed circularly polarized selective surface (LHCPSS) Pierrot unit cell. Through simulation, it is shown that the antenna operates well at 60GHz. The maximum antenna directivity is 19dB with a reflection coefficient below -15dB. The radiation patterns showed good responses with side lobes level below -10dB. In addition, the best axial ratio at 60GHz is achieved as 0.75dB.

scholarly journals LHCP four patches stack triangular truncated antenna using corporate feed microstrip-line for CP-SAR sensor

2021 ◽  
Vol 11 (5) ◽  
pp. 4125
Author(s):  
Muhammad Fauzan Edy Purnomo ◽  
Vita Kusumasari ◽  
Rudy Yuwono ◽  
Rahmadwati Rahmadwati ◽  
Rakhmad Romadhoni ◽  
...  
Keyword(s):  
Circular Polarization ◽  
Microstrip Antenna ◽  
Microstrip Line ◽  
Axial Ratio ◽  
Synthetic Aperture ◽  
Impedance Bandwidth ◽  
Target Frequency ◽  
Left Hand ◽  
S Parameter ◽  
Aerial Vehicle

<span>In this paper, we acquire the configuration of the left-hand circular polarization (LHCP) array four patches stack triangular truncated microstrip antenna. This construction use the basic corporate feed microstrip-line with modified lossless T-junction power divider on radiating patch for circularly polarized-synthetic aperture radar (CP-SAR) sensor embedded on unmanned aerial vehicle (UAV) with compact, small, and simple configuration. The design of circular polarization (CP) is realized by truncating the whole three tips and adjusting the parameters of antenna at the target frequency, <em>f </em>= 5.2 GHz. The results of characteristic performance and <em>S</em>-parameter for the LHCP array four patches stack antenna at the target frequency show successively about 9.74 dBic of gain, 2.89 dB of axial ratio (<em>Ar</em>), and </span><span>-</span><span>10.91 dB of S-parameter. Moreover, the impedance bandwidth and the 3 dB-<em>Ar</em> bandwidth of this antenna are around 410 MHz (7.89%) and 100 MHz (1.92%), respectively.</span>

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