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All Journal Perfecting a Video Game with Game Metrics Jurnal Teknologi Elektro Indonesian Journal of Electrical Engineering and Computer Science Jurnal Nasional Teknik Elektro dan Teknologi Informasi
Said Attamimi
Universitas Mercu Buana
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering

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Journal : Indonesian Journal of Electrical Engineering and Computer Science

 1 
Bandpass filter based on complementary split ring resonators at X-band Furqan Furqan; Said Attamimi; Andi Adriansyah; Mudrik Alaydrus
Indonesian Journal of Electrical Engineering and Computer Science Vol 13, No 1: January 2019
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v13.i1.pp243-248

Abstract

Complementary Split Ring Resonators were used integrated in a substrate integrated waveguide to generate passband charateristics in X-Band. Based on a parameter study with an electromagnetic commercial software, the characteristics of double and quadruple CSRRs according the reflection and transmission factor were observed. The computer simulation showed, the bandpass filter worked in the frequency range 8.12-8.63 GHz and 8.11-8.63 GHz for double and quadruple CSRR, respectively. The insertion loss was 0.12 dB and 0.015 dB. The measurement mit a vector network analyzer verified the simulation results. The frequeny range measured was 8.12-8.67 GHz and 8.12-8.61 GHz for double and quadruple CSRRs, respectively. The measured insertion loss was 0.25 dB and 0.2 dB.
Optimized multibeam synthesis of time-modulated microstrip arrays Mudrik Alaydrus; Said Attamimi; Umaisaroh Umaisaroh
Indonesian Journal of Electrical Engineering and Computer Science Vol 28, No 3: December 2022
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v28.i3.pp1563-1572

Abstract

The capability to form the main beam of antennas improves the energy efficiency of wireless systems and enhances radar systems' effectiveness in detecting and tracking objects. The time-modulated array can generate multibeam with arbitrary directions in different spectral parts. This work synthesizes several linear arrays to achieve particular main beams and additional restrictions. We modify the pulse durations and the switch-on instants of the switches in each antenna element in an optimization procedure. The parameters are varied through the simulated annealing by minimizing certain cost functions. We designed three linear arrays: model 1 consists of six elements and has two beams. Model 2 is the improved version of model 1 by rejecting the sidelobes of other spectral contributions at the main beam under consideration. Model 3 consists of sixteen elements and has three different beams. The analytical results were verified by modeling the arrays in the form of microstrip arrays in a numerical simulation with HFSS. We obtained very accurate verification. Distinctive devitations at the region ϑ<-60o and ϑ>60o originate from the radiation characteristics of microstrip antennas, which focus the energy upwards to the region around ϑ=0o.
Co-Authors Alya Patrakomala Andi Adriansyah Andi Machdani Budiyanto Husodo Dadang Fadillah Dian Widi Astuti Dwi Astuti Cahyasiwi Fadli Sirait Fina Supegina Furqan Furqan Inggis Kurnia Trisiawan Julpri Andika Kemas Nur Fuadi Melinda Utami Mudrik Alaydrus Muslim Muslim Okkie Adhie Darmawan Rachman Rachman Rizki Nugraha Hidayat Sepryanto Sepryanto Umaisaroh Umaisaroh Yugost Novanka Yuliza Yuliza