Equilateral Triangular Microstrip Antenna for Circularly-Polarized Synthetic Aperture Radar

Baharuddin, Merna; Wissan, Victor; Sumantyo, Josaphat Tetuko Sri; Kuze, and Hiroaki

doi:10.2528/pierc09052202

Cited by 25 publications

(20 citation statements)

References 11 publications

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“…The planar array configuration is widely employed in radar systems where a narrow pencil beam is needed. A better control of the beam shape and position in space can be achieved by correctly arranging the elements along a rectangular grid to form a planar array (see Figure 1) [3,11]. For the ease discussion in this paper, we separate the explanation into three parts namely (i) the model c2 and c3 antennas, (ii) the model c1, c3, and c3s antennas, (iii) the model equilateral triangle antenna.…”

Section: Methodsmentioning

confidence: 99%

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Analysis Performance of Triangle Microstrip Antenna for Basic Construction of Circularly Polarized-Synthetic Aperture Radar Application

Purnomo

Kitagawa

2018

Jurnal Teknologi

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Graphical abstract AbstractThe development of radar technology, Synthetic Aperture Radar (SAR), Circularly Polarized-Synthetic Aperture Radar (CP-SAR) and geostationary satellite, are 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 are consecutively about 120° and 80°. AbstrakPerkembangan teknologi radar, SAR, CP-SAR, dan satelit geopegun, menuntut keperluan kemudahan perhubungan dan infrastruktur yang mempunyai pelbagai platform, yang boleh menjana proses data dengan resolusi tinggi dan kualiti imej yang lebih baik untuk semua jenis kawasan terokai. Kerana antena tertanam pada badan satelit geopegun, bentuknya harus padat, kecil, dan konfigurasi mudah, iaitu segi tiga sama sisi dengan c1 dipenggal-tip, c2, c3 dan c3s, dan tanpa dipenggal-tip antena dengan siasatan dan suapan mikrostrip talian menggunakan kuasa rendah dalam S-band (2.5 GHz -2.9 GHz). Kaedah Moments, MoM dipilih dalam analisis berangka banyak cepat. Hasil daripada prestasi bagi antena c2 dan c3 adalah hampir sama iaitu misalnya nilai gain dan Ar untuk setiap antena kali berturut-turut 6.8 dBic dan 0.42 dB. Selain itu, hasil daripada prestasi untuk c1, c3 dan c3s antena di setiap frekuensi salunan agak berbeda, seperti berikut: c1 antena beroperasi di kekerapan 2.76 GHz, mendapat RHCP = 6.66 dBic, Ar = 2.91 dB, operasi frekuensi c3 antena adalah 2.9 GHz, mendapat LHCP = 6.98 dBic, Ar = 3.02 dB, dan untuk antenna c3s mempunyai operasi frekuensi 2.5 GHz, mendapat LHCP = 6.08 dBic, Ar = 1.75 dB. Hasil daripada simulasi dan pengukuran antena segi tiga sama sisi, terutama bagi Ar jalur lebar di bawah 3 dB adalah masing-masing sekitar 0.02 GHz dan 0.015 GHz.Determine the SAR, CP-SAR, and ...

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Section: Methodsmentioning

confidence: 99%

“…The full characteristic of backscattered SAR signal from random object only can be passed by using circular polarization. If it is compared with the linear SAR sensor, then a large amount of information about the scene and the image target will be provided by a Circularly Polarized-Synthetic Aperture Radar (CP-SAR) sensor [3].…”

Section: Introductionmentioning

confidence: 99%

Analysis Performance of Triangle Microstrip Antenna for Basic Construction of Circularly Polarized-Synthetic Aperture Radar Application

Purnomo

Kitagawa

2018

Jurnal Teknologi

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“…The time-domain response of the radar sensor measurement towards a metal plate located from 80 to 300 cm from two different antennas. lower frequencies is a very challenging [21][22][23][24]. Nevertheless, this work it is focused only on the design of an impulse generator for a radar sensor and demonstrates its workability for measuring the distance and electrical properties for some materials.…”

Section: Measurements Range Distancementioning

confidence: 99%

An Advanced Electrical Properties Measurement Approach With a Designed Bi-Static Ultra-Wideband Impulse Radar Sensor

Ahajjam¹,

Aghzout²,

Cataia-Civera³

et al. 2018

PIER M

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This paper reports on the development of a compact, low-cost, impulse bi-static UWB radar sensor for its use as non-destructive methods for electrical property measurement in industrial application. This UWB Radar sensor consists of an ultrashort-monocycle-pulse transmitter of 330 ps, an oscilloscope as a UWB sampling receiver with a high wide band of 6 GHz, and two UWB antennas ranging from 0.4 to 6 GHz. A new model of SRD has been introduced to decrease the rise time of the impulse. Performance of this UWB radar sensor was verified through two kinds of applications: range detection and electrical property measurements. All measurements have been carried out in an anechoic chamber with a distance variation between 80 and 300 cm. The full radar system provides good agreement between the experimental and theoretical results, which demonstrate its application in many fields, especially for electrical Property Measurements.

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“…The CP microstrip antennas have been broadly developed for the satellite antenna by considering its compact size and light weight, which is a critical issue for nanosatellite. Some CP microstrip antennas were discussed in articles such as [5] with six-element stacked patch and [6][7][8][9] with equilateral triangularpatch. A circularly-polarized printed antenna is presented in [7,10] with truncated and triangular-ring slot in the patch, respectively.…”

Section: Introductionmentioning

confidence: 99%

A Circularly Polarized Circularly-Slotted-Patch Antenna With Two Asymmetrical Rectangular Truncations for Nanosatellite Antenna

Sitompul

Sumantyo

Kurniawan

et al. 2019

PIER C

Self Cite

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In this paper, a circularly polarized slot-patch antenna for nanosatellite is presented. The novel design of the circularly polarized wave conducted by two asymmetrical rectangular-truncation techniques implemented on a circularly-slotted-patch on the front side and a deformed-shifted-feedline on the back side of the substrate. The antenna is printed on substrates with the dielectric constant of 2.17 and thickness of 1.6 mm. The resonant frequency of the proposed antenna is set at 2.2 GHz with the minimum requirement of the axial ratio bandwidth (ARBW) of 300 MHz. The proposed antenna produces under 10 dB impedance bandwidth (IBW) 1.2765 GHz or equal to 58% (1.7235-3 GHz) with Left-Handed Circular Polarization (LHCP). The average antenna gain reaches 4.5 dBic at 2.2 GHz and the ARBW 327.5 MHz or about 14.88% (2.0275-2.355 GHz). This paper includes the description and presentation of the completed discussion.

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Equilateral Triangular Microstrip Antenna for Circularly-Polarized Synthetic Aperture Radar

Cited by 25 publications

References 11 publications

Analysis Performance of Triangle Microstrip Antenna for Basic Construction of Circularly Polarized-Synthetic Aperture Radar Application

Analysis Performance of Triangle Microstrip Antenna for Basic Construction of Circularly Polarized-Synthetic Aperture Radar Application

An Advanced Electrical Properties Measurement Approach With a Designed Bi-Static Ultra-Wideband Impulse Radar Sensor

A Circularly Polarized Circularly-Slotted-Patch Antenna With Two Asymmetrical Rectangular Truncations for Nanosatellite Antenna

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