ARDELINA, NANCY (2016) PERANCANGAN ANTENA VIVALDI ARRAY UNTUK APLIKASI GROUND PENETRATING RADAR ULTRA WIDEBAND (GPR-UWB). Masters thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Salah satu jenis antena yang sesuai untuk aplikasi Ground Penetrating
Radar (GPR) adalah antena Vivaldi. Pada penelitian ini telah dirancang antena
antipodal Vivaldi array empat elemen dengan konfigurasi H-Plane. Antena
antipodal Vivaldi array terdiri dari empat antena antipodal Vivaldi elemen
tunggal. Berdasarkan hasil simulasi, antena antipodal Vivaldi elemen tunggal
bekerja pada rentang frekuensi 1.86 sampai 2.83 GHz, frekuensi tengah pada
2.377 GHz dengan nilai return loss sebesar -23.369 dB, bandwidth 0.97 GHz atau
40.81%, bandwidth fraksional sebesar 41.36%, dan gain 3.2 dBi. Untuk
mengoptimalkan performansi antena array, maka perlu ditentukan jarak
antarelemen dengan efek mutual coupling terkecil. Berdasarkan hasil simulasi,
jarak antarelemen sebesar 10d/8 atau 6.6875 cm yang paling sesuai dengan
kriteria desain. Berdasarkan hasil simulasi, antena antipodal Vivaldi array empat
elemen dengan jarak antarelemen sebsesar 10d/8 bekerja pada rentang frekuensi
1.7326 sampai 2.9103 GHz, frekuensi tengah pada 2.473 GHz dengan return loss
sebesar -33.142 dB, bandwidth 1.1867 GHz atau 47.62%, bandwidth fraksional
50.73%, dan gain 10.9 dBi. Sedangkan berdasarkan hasil pengukuran antena
elemen tunggal bekerja pada frekuensi 2.04 sampai 2.37 GHz, frekuensi tengah
pada 2.22 GHz dengan return loss sebesar -34.1526 dB dan VSWR 1.0399,
bandwidth sebesar 0.33 GHz, bandwidth fraksional 53%, dan gain 14.7 dBi.
Berdasarkan hasil pengukuran antena antipodal Vivaldi array empat elemen
bekerja pada rentang frekuensi 1.98 sampai 2.77 GHz, frekuensi tengah 2.46 GHz
dengan return loss -38.8579 dB dan VSWR 1.023, bandwidth 0.79 GHz atau
32.11%, bandwidth fraksional 33.26%, dan gain 16 dBi. Antena hasil fabrikasi
telah memuhi kriteria desain, namun terdapat perbedaan hasil pada beberapa
parameter yang dapat disebabkan oleh ketepatan dimensi antena hasil pengukuran
dan penyolderan konektor ke antena.
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One of the most suitable antennas for Ground Penetrating Radar (GPR)
application is Vivaldi antenna. In this research, four elements Antipodal Vivaldi
Array Antenna has been proposed. This antenna consist of four element antipodal
Vivaldi single antenna. Based on the simulation result, the single element antenna
works well at 1.86-2.83 GHz, centre frequency of 2.377 GHz, return loss of -
23.369 dB, 0.97 GHz or 40.81% bandwidth, 41.36% factional bandwidth, dan 3.2
dBi of gain. In order to optimize the antenna array’s performance, distance
between elements with minimum mutual coupling is required. Distance between
elements at 10d/8 or 6.6875 are the most suitable for design criteria. Based on
simulation result, the four elements antenna works well at 1.7326-2.9103 GHz,
centre frequency of 2.473 GHz, return loss of -33.142 dB, 1.1867 GHz or 47.62%
bandwidth, 50.73% fractional bandwidth, and 10.9 dBi gain. Based on the
measurement result, the single element antenna works well at 2.04-2.37 GHz, 2.22
GHz centre frequency, -34.1526 dB return loss, 1.0399 of VSWR, 0.33 GHz or
1.486% bandwidth, 53% fractional bandwidth, and gain of 14.7 dBi. The four
elements of antipodal Vivaldi array antenna works well at 1.98-2.77 GHz, 2.46
GHz centre frequency, -38.8579 dB return loss, 1.023 VSWR, 0.79 GHz or
32.11% bandwidth, 33.26% fractional bandwidth, and gain of 16 dBi. The
fabricated antenna has meet the design criteria, however there are differences in
several parameters that can be caused by the accuracy of the antenna’s dimension
and soldering process the connector to the antenna .
| Item Type: | Thesis (Masters) |
|---|---|
| Additional Information: | RTE 621.382 54 Ard p |
| Uncontrolled Keywords: | Antena Vivaldi, Antena Vivaldi Array, GPR-UWB |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7871.6 Antennas (Electronics) |
| Divisions: | Faculty of Industrial Technology > Electrical Engineering > 20101-(S2) Master Thesis |
| Depositing User: | Anis Wulandari |
| Date Deposited: | 03 Jan 2017 05:11 |
| Last Modified: | 26 Dec 2018 03:21 |
| URI: | http://repository.its.ac.id/id/eprint/1270 |
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