Pembuatan Antenna Mikrostrip 2,4 Ghz Untuk Komunikasi Aironet Komputer

Sembada, Andria Megar (2006) Pembuatan Antenna Mikrostrip 2,4 Ghz Untuk Komunikasi Aironet Komputer. Masters thesis, Institut Teknologi Sepuluh November.

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Abstract

Antena mikrostrip dengan frekuensi kerja 2,4 GHz telah diteliti secara teoritis dan eksperimental. Divais ini memiliki struktur seperti wafer yang terdiri atas tiga lapis, yaitu lapis atas yang berisi patch konduktor berbahan aluminium berbentuk persegi dan kanal input RF (feeding line), lapis tengah berupa material dielektrik FR4 dengan permitivitas 4,2, dan lapis bawah berupa ground plane berbahan tembaga. Secara teoritis diperoleh dimensi divais sekitar 38,76 mm × 30,13 mm × 1,6 mm dan diharapkan dapat beroperasi pada interval frekuensi 2,4–2,5 GHz. Optimalisasi kinerja antena dilakukan dengan memvariasikan lebar feeding line, inset feeding line, dan lebar celah antara feeding line dan patch peradiasi. Nilai return loss (S11) yang terukur sebesar −37,465 dB pada frekuensi resonansi 2,419925 GHz dengan VSWR yang mendekati kondisi ideal, yaitu 1,0271, dan impedansi sebesar 51,36 Ω. Lebar pita frekuensi (bandwidth) yang terukur pada VSWR 2:1 adalah 100,6498 MHz dengan penguatan daya (gain) sebesar 2,80 dB. Pada percobaan pengiriman data antara dua komputer yang berjarak 3 km, diperoleh nilai SNR (Signal-to-Noise Ratio) sebesar 13 dB, dengan level input −84 dB dan level noise −97 dB. Percobaan tersebut menggunakan kabel RG-8 sepanjang 15 m dengan rugi-rugi (loss) sebesar 0,5 dB/m serta dua konektor dengan rugi-rugi masing-masing sebesar 2 dB.
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A microstrip antenna with an operating frequency of 2.4 GHz was investigated both theoretically and experimentally. The device has a wafer-like structure consisting of three layers: the top layer contains a square aluminum conducting patch and an RF input channel (feeding line), the middle layer consists of FR4 dielectric material with a relative permittivity of 4.2, and the bottom layer is a copper ground plane. The calculated device dimensions are approximately 38.76 mm × 30.13 mm × 1.6 mm, with a desired operating frequency range of 2.4–2.5 GHz. The antenna performance was optimized by varying the width of the feeding line, the inset feeding line, and the gap between the radiating patch and the feeding line. The measured return loss (S11) was −37.465 dB at the resonance frequency of 2.419925 GHz, with a near-ideal VSWR of 1.0271 and an impedance of 51.36 Ω. The measured bandwidth at a VSWR of 2:1 was 100.6498 MHz, with a power gain of 2.80 dB. In an experiment involving data transmission between two computers separated by 3 km, an SNR (Signal-to-Noise Ratio) of 13 dB was obtained, with an input level of −84 dB and a noise level of −97 dB. The experiment used a 15 m RG-8 cable with a loss of 0.5 dB/m and two connectors, each having a loss of 2 dB.

Item Type:	Thesis (Masters)
Additional Information:	RTFi 621.382 4 Sem p
Uncontrolled Keywords:	Antena mikrostrip, FR4, VSWR,feeding line, inset feeding line, Microstrip antenna
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7871.6 Antennas (Electronics)
Divisions:	Faculty of Mathematics and Science > Physics > 45101-(S2) Master Thesis
Depositing User:	magang .
Date Deposited:	30 Sep 2026 03:38
Last Modified:	30 Sep 2026 03:38
URI:	http://repository.its.ac.id/id/eprint/145074

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