Permatasari, Prima Dian (2015) Pelebaran Bandwidth Antena Mikrostrip Dengan Struktur Pentanahan Tiruan. Undergraduate thesis, Institut Technology Sepuluh Nopember.
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Abstract
Antena mikrostrip banyak digunakan dalam aplikasi sistem
telekomunikasi. Antena mikrostrip mempunyai kelebihan yaitu dimensi
yang kecil, harga yang murah dan mudahnya fabrikasi. Akan tetapi
antena ini memiliki kekurangan seperti bandwidth yang sempit, gain
yang kecil, dan efisiensinya yang rendah. Masalah paling serius yang
dihadapi oleh antena mikrostrip adalah sempitnya bandwidth yang
dihasilkan.
Pada Tugas Akhir akan dibahas peningkatan lebar bandwidth
antena mikrostrip menggunakan metode Artificial Ground Structure
(AGS) yang bertindak sebagai ground plane antena. Metode AGS ini
mengunakan rectangular unit cell yang bertindak sebagai reflector
antena. Antena terlebih dahulu disimulasikan di software CST
Microwave Studio 2010 sampai sesuai dengan spesifikasi yang
diinginkan kemudian difabrikasi. Setelah difabrikasi maka akan
dilakukan pengukuran.
Saat simulasi, antena tanpa AGS menghasilkan bandwidth
sebesar 267 MHz untuk rentang frekuensi 6-6.3 GHz, untuk level
pembacaan VSWR <2, return loss pada fc sebesar -28.754 dB.
Sedangkan antena dengan AGS menghasilkan bandwidth 2052 MHz
untuk rentang frekuensi 5.759 -7.811 GHz, return loss pada fc sebesar
-28.420 dB. Saat pengukuran, antena tanpa AGS mempunyai bandwidth
sebesar 180 MHz MHz untuk rentang frekuensi 6.640 – 6.6 GHz, return
loss pada fc sebesar -15.043 dB. Sedangkan antena dengan AGS
menghasilkan bandwidth 811 MHz untuk rentang frekuensi 5.883 GHz –
6.694 GHz, return loss pada fc sebesar -21.233 dB. Dengan metode
AGS peningkatan bandwidth antena sebesar 77.805%
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Microstrip antennas have been widely used in many system
telecommunication. It can be found in radar system, satellite
communication, or in GPS. Microstrip antennas have several advantages
such as their small dimension, low cost and ease of fabrication. But they
have their disadvantages too, such as narrow bandwidth, small gain and
low efficiency. But the most serious problem is how small bandwidth
they produced. So, many researches are done to make microstrip
antennas have wide bandwidth.
In this final project will be explained about how to increase
bandwidth with a method called Artificial Ground Structure (AGS) as
antenna ground plane. This method is used rectangular unit cell as
reflector. Two kinds of antennas will be made, antennas without AGS
and with one, and the bandwidth they produced will be compared.
Before fabrication, antennas will be simulated in software CST
Microwave Studio 2010 until they find the satisfactory result, and then
fabricated it.
In simulation, antennas without AGS have 267 MHz bandwidth
in range frequency 6-6.3 GHz, in VSWR level < 2, return loss in fc is
-28.754 dB. Whereas antenna with AGS, it can produce bandwidth 2052
MHz for range frequency 5.759 -7.811 GHz, return loss in fc is -28.420
dB. In the measurement, antennas without AGS have bandwidth 180
MHx for range frequency 6.64-6.6 GHz, return loss in fc is - 15.043 dB.
And antennas with AGS can produce bandwidth 811 MHz for range
frequency 5.883 GHz – 6.694 GHz, return loss in fc is -21.233 dB. So,
with AGS method, bandwidth antennas can be improved until 77.805%.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSE 621.382 4 Per p |
| Uncontrolled Keywords: | antena mikrostrip, AGS, peningkatan bandwidth, rectangular unit cell |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7871.6 Antennas (Electronics) |
| Divisions: | Faculty of Electrical Technology > Electrical Engineering > 20201-(S1) Undergraduate Thesis |
| Depositing User: | Mr. Tondo Indra Nyata |
| Date Deposited: | 15 Aug 2018 02:39 |
| Last Modified: | 15 Aug 2018 02:39 |
| URI: | http://repository.its.ac.id/id/eprint/59360 |
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