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Circularly Polarized Proximity-Fed Microstrip Array Antenna for Micro Satellite Muhammad Darsono; Endra Wijaya
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 11, No 4: December 2013
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v11i4.1204

Abstract

Design of circular polarization microstrip antenna array was developed to support micro-satellite technology. Circular polarization antenna array used for data transmission applications operating in the S band frequencies from the satellite to the ground station. In this study of the patch array using proximity coupling techniques in this study to obtain high gain and wide of bandwidth. The structure of the antenna array design consists of four identical square patch elements and to use the concept of corporate transmission line fed power divider network uses three transformers quarter-lambda T-junction.  Bandwidth impedance matching for resonance between two patches is ¾ l antenna system for center frequency of 2.25 GHz.  The antenna is designed using the method of moments through simulation with microwave office software applications. The results of simulations and measurements obtained antenna parameters, such as: bandwidth of return loss <-10 dB above 100 MHz resonant frequency shifted to 1.75%, VSWR (1 to 2), the bandwidth of axial ratio <3 dB is 1.6% (narrowband) and the maximum directivity (gain) is 9.128 dB. Overall study results showed good performance antenna array with circular polarization properties, high gain and operates in the S band frequency micro satellite system.
Rancang Bangun Antena Mikrostrip Dua Elemen Patch Persegi Untuk Aplikasi Wireless Fidelity M. Darsono
Jurnal EECCIS Vol 6, No 2 (2012)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (377.186 KB)

Abstract

Rancang bangun antena mikrostrip susun dua patch dikembangkan untuk mendukung system komunikasi wireless Standar IEEE 802.11b (Wi-Fi). Antena susun dua patch untuk mendapatkan peningkatan parameter gain. Konfigurasi antena kombinasi dua patch bujur sangkar terhubung rangkaian transformer. Perangcangan digunakan metode moment dengan aplikasi simulasi perangkat lunak microwave office. Pada riset ini untuk jenis material substrat yang digunakan adalah duroid RT 5880. Hasil dari simulasi rangkaian transformer dalam kondisi mismatch impedansi diperoleh pada jarak antara kedua patch adalah 0,8λ. Hasil dari simulasi dan pengukuran antenna diperoleh parameter bandwidth return loss dibawah 10 dB bergeser 2,9% dan VSWR antara 1 dan 2. Untuk Beamwidth adalah 77,550 dengan gain adalah adalah 9,377 dB. Antena bersifat directional pada arah polarisasi linier vertical dan kinerja optimasi beroperasi di daerah frekuensi Wi-Fi.Kata Kunci—Antena mikrostrip, Patch bujur sangkar, Transformer, Wi-Fi.
Simulasi Rancangan Antena Planar Bow-tie untuk Aplikasi GPR Mohammad Darsono; Alfin Hidayat
Jurnal EECCIS Vol 12, No 2 (2018)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1144.973 KB)

Abstract

Perancangan antena bow-tie mikrostrip dikembangkan guna mendukung pengembangan Teknologi Ground penetrating radar (GPR) pada frekuensi 1,6 GHz. Untuk merancang antena dilakukan dengan menggunakan metode simulasi melalui software microwave office. Material substrat yang digunakan pada simulasi adalah duroid jenis RT/5880, dimana konstanta dielektrik 2,2 dengan ketebalan 1,57 mm. Struktur antena bow-tie terdiri dari dua patch simetris dengan dua saluran pencatu indentik dipasang paralel masing-masing untuk karakteristik impedansi 50 Ohm. Penambahan slot indentik pada masing-masing patch berpengaruh pada performance untuk memperoleh frekuensi resonansi dan bidang grounding sebagian berpengaruh pada lebar bandwidth. Hasil dari simulasi  perancangan antena diperoleh parameter, sebagai berikut: bandwidth return loss < 10 dB adalah 285 MHz (wideband), VSWR antara 1 sampai dengan 2 diperoleh 1,025 dengan frekuensi resonansi pada 1,6 GHz, impedansi masukan saat resonansi terhadap karakteristik impedansi 50  Ohm dalam keadaan mismatch. Untuk maksimum directivity  radiasi  diperoleh 3,39 dB dengan lebar sudut beamwidth adalah 91,2 derajat dan maksimum power radiasi sebesar 5,39 dB pada level diatas 3 dB. Pencapaian target performance sebagai rancangan antena GPR terlihat dengan baik seperti yang terlihat pada bandwidth maupun VSWR terhadap nilai frekuensi kerja yang ditetapkan oleh GSSI ( Geophysical Survey Systems, Inc).
Perancangan Antena Mikrostrip Frekuensi 2,6 GHz Metode Simulasi untuk Aplikasi Ground Penetrating Radar (GPR) Muhammad Darsono; Arlendo Talahatu Pasorong
Setrum : Sistem Kendali-Tenaga-elektronika-telekomunikasi-komputer Vol 7, No 1 (2018): Edisi Juni 2018
Publisher : Fakultas Teknik Elektro - Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1080.529 KB) | DOI: 10.36055/setrum.v7i1.3178

Abstract

Perancangan antena mikrostrip planar dikembangkan untuk peningkatan bandwidth yang mendukung sistem aplikasi Ground Penetrating Radar (GPR). Aplikasi GPR menggunakan teknologi Ultra Wideband direkomendasikan oleh  Federal Communication Commission (FCC) dan dikembangkan oleh Geophysical Survey Systems, Inc. (GSSI) pada frekuensi 2,6GHz. Untuk mendukung rancangan antena secara simulasi digunakan perangkat lunak microwave office (MWO). Pada perancangan antena jenis material substrat yang digunakan adalah jenis duroid RT/5880 memiliki ketebalan 1,57 mm dan konstanta dielektrik 2,2. Struktur rancangan antena terdiri dari sebuah patch peradiasi bentuk persegi dengan penambahan celah didalamnya bentuk persegi dengan sebuah saluran transmisi mikrostrip dan pembatasan pada luasan bidang ground. Hasil dari simulasi  rancangan antena diperoleh parameter, seperti : bandwidth pada return loss di bawah 10 dB adalah 1962 MHz, Voltage Standing Wave Ratio (VSWR) antara 1 sampai 2 adalah 1,053 dan Impedansi masukan (Zin) saat resonansi adalah 0,95 +j 0,029 Ohm.   Untuk pola radiasi dan polarisasi diperoleh Gain adalah 5,147 dB dari directivity maksimum polaradiasi dengan polarisasi linier.  Target bandwidth terhadap aplikasi GPR adalah 78% dan terhadap UWB adalah 30%. Bentuk rancangan antena  memperlihatkan suatu model antena monopole yang mampu beroperasi pada wilayah wideband pada frekuensi sistem GPR. Sebuah rancangan antena yang memiliki dimensi minimalis dan kompak.
STUDI PERANCANGAN ANTENA MICROSTRIP MONOPOLE BENTUK PATCH SEGITIGA DENGAN TEKNIK DEFECTED GROUND STRUCTURE UNTUK APLIKASI ULTRA-WIDEBAND M Darsono; Dwi Widiatmoko
Jurnal Teknologi Terapan Vol 8, No 2 (2022): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31884/jtt.v8i2.449

Abstract

Study on the design of a microstrip monopole antenna as a form of support and development of UWB (Ultra-Wideband) wireless communication devices. The basic concept of the proposed antenna design is minimalist with the characteristics of operating on broadband in accordance with those regulated by the FCC (Federal Communications Commission). The design of a planar type of microstrip antenna with triangular radiation using the DGS (Defected Ground Structure) technique for the design of a trapezoidal ground plane. As support in this research, Duroid RT 5880 substrate material and CST software were used for the simulation method. The results of the simulation method obtained are twofold: The shape of the antenna design configuration is minimalist and compact and the antenna performance parameters. For antenna performance parameters obtained through simulation methods, such as the fractional bandwidth of return loss below 10 dB is 3.8:1 (VSWR < 2), and the maximum power radiation transmittance is 2.59dBi, forming an omnidirectional radiation pattern with vertical polarization. The characteristics of the operating performance of the antenna on the UWB spectrum are able to cover the frequency area in the C-Band and X-band and in the application, the antenna design supports wireless LAN communication and satellite communication systems.
RANCANG BANGUN ANTENA MONOPOLE MIKROSTRIP MENGGUNAKAN DEFECTED GROUND STRUCTURE BENTUK PERSEGI UNTUK OPTIMASI BANDWIDTH PADA APLIKASI KOMUNIKASI ULTRA-WIDEBAND M Darsono; Kafriyanti Kafriyanti
Jurnal Teknologi Terapan Vol 9, No 1 (2023): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31884/jtt.v9i1.459

Abstract

The development of UWB technology is very helpful in supporting high-speed data access. UWB offers a solution for large capacity for wide bandwidth. The frequency range for UWB systems between 3.1–10.6GHz will cause interference to wireless communication systems via wireless local area networks (WLANs) for IEEE 802.11a operating at 5.15–5.35GHz and 5.725–5.825GHz. This research aims to obtain a design of a rectangular printed monopole patch microstrip antenna and a slit using the Defected Ground Structure (DGS) technique to obtain bandwidth optimization on the UWB spectrum. For the implementation of the antenna design, the simulation method is used with the support of the RT/ Duroid substrate material. Realization of the design with the results of a manufactured antenna prototype with a minimalist size. The simulation and measurement results of the Absolute UWB bandwidth parameter at return loss < -10 dB (VSWR <2) the measurement value is 600MHz narrower than the simulation and for fractional bandwidth the measurement value is narrower by 0.21%. Resonance at the 5.2GHz frequency produces polarization with a gain value of 3.29dBi, omnidirectional and vertical polarization. As a prototype antenna to support the application of indoor wireless access communication devices that are low profile, compact with minimalist dimensions.
Optimization of Ultra-Wideband bandwidth for the design of microstrip monopole antennas using Defected Ground Structure and star-shaped patche Muhammad Darsono; Muhammad Rega
SINERGI Vol 27, No 3 (2023)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2023.3.002

Abstract

This paper presents a design of a monopole microstrip antenna developed to support Ultra-wideband (3.1 -10.6 GHz) technology wireless communication systems. An antenna with minimalist dimensions operates on C-Band (wireless LAN) and X-Band (downlink satellite) frequencies. The antenna profile has a star shape patch on the top side and the use of the Defected Ground Structure (DGS) technique on the bottom side on RT DUROID substrate media. The design uses a simulation method using software and measurement tests on antenna prototypes to obtain parameters and antenna performance characteristics. The results of the measurement test, the bandwidth return loss < -10 dB has a difference of 40% (absolute) and 0.7% (Fractional) lower than the simulation when VSWR < 2. The radiation pattern forms an omnidirectional with a maximum directivity (Gain) of 5.18dBi with polarization vertical. Overall, the UWB monopole antenna design results have a low profile, compact, small size, and support mobile communication devices.
Modeling and Simulation of Dual-band Yagi Antennas for Voice Communication on Microsatellite Muhammad Darsono; Ahmad Ruri Wijaya; Rommy Hartono
JURNAL INFOTEL Vol 11 No 3 (2019): August 2019
Publisher : LPPM INSTITUT TEKNOLOGI TELKOM PURWOKERTO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/infotel.v11i3.435

Abstract

The design of the dual-band Yagi antenna was developed to support voice communication through voice repeaters on microsatellites in the UHF-VHV frequency from ground stations. The Yagi antenna is a type of half lambda dipole antenna that makes it easy to obtain direction and increase gain. The antenna is designed using the method of moment through a simulation with the CST microwave studio software application. The design used as an antenna element material is a type of copper pipe cylinder. The results of the Yagi antenna design in the VHF frequency consist of one driven element, one reflector element, and three director elements, while the UHF frequency consists of one reflector element and seven directors. The results of simulation parameters are obtained, such as Bandwidth of return loss below 10 dB is 4.3 MHz(VHF), and 44 MHz (UHF), VSWR (2:1) is 1.24 (VHF) and 1.36 (UHF), Gain is 9.19 dBi (VHF) and 10.5 dBi (UHF) and Beam Width is 64 degree (VHF) and 58 degree (UHF). The suitability of the antenna design target is dual-band, and Gain value in UHF is higher than VHF.