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All Journal International Journal of Electrical and Computer Engineering Jurnal Elektronika dan Telekomunikasi
Chaeriah Bin Ali Wael
National Research and Innovation Agency
Computer Science & IT Electrical & Electronics Engineering Engineering

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Design of Flexible 3.2 GHz Rectangular Microstrip Patch Antenna for S-Band Communication Teguh Praludi; Yana Taryana; Ken Paramayudha; Budi Prawara; Yusnita Rahayu; Chaeriah Bin Ali Wael; Yaya Sulaeman; Bagus Edy Sukoco; Ros Sariningrum; Hendrawan Kurniadin; Wahid Nova Nugraha
Jurnal Elektronika dan Telekomunikasi Vol 21, No 2 (2021)
Publisher : LIPI Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jet.v21.140-145

Abstract

This paper presents the design, simulation, realization and analysis of flexible microstrip patch antenna for S-band applications. The proposed design also adopts the conformal structure by utilizing flexible substrate. Conformal or flexible structure allows the antenna to fit with any specified shape as desired. The antenna patch dimensions is 43 mm × 25 mm without SMA connector. The patch is etched on the flexible dielectric substrate, pyralux FR 9111, with a relative dielectric constant of εr = 3 and the thickness of substrate, h = 0.025 mm. The antenna is designed to resonate at 3.2 GHz. The return loss (RL) of the simulation is -35.80 dB at the center frequency of 3.2 GHz. The fabricated antenna prototype was measured at different bending angles scenarios including 0º, 30º, 60º, and 90º. The measurement of antenna prototype shows that the center frequency is shifted to the higher frequency of 3.29 GHz, compared to the simulation result. Among these scenarios, measurement at bending angle of 90º gives the best performance with RL = - 31.38 dB at 3.29 GHz, the bandwidth is 80 MHz, and the impedance ZA = 48.36 + j2.04 Ω. Despite a slight differences from simulation results, the designed antenna still performs well as expected.
Impact of carrier frequency offset and in-phase and quadrature imbalance on the performance of wireless precoded orthogonal frequency division multiplexing Suyoto Suyoto; Agus Subekti; Arief Suryadi Satyawan; Nasrullah Armi; Chaeriah Bin Ali Wael; Galih Nugraha Nurkahfi
International Journal of Electrical and Computer Engineering (IJECE) Vol 12, No 5: October 2022
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijece.v12i5.pp5153-5163

Abstract

Precoding in orthogonal frequency division multiplexing (OFDM) system proved to reduce the peak-to-average power ratio (PAPR), so that it improves BER. However, from the existing literature, the effect of carrier frequency offset (CFO), in-phase and quadrature (IQ) imbalance on precoded wireless OFDM systems has not been carried out. Therefore, this study evaluated the precoded OFDM (P-OFDM) system performance by considering the impact of CFO and IQ imbalance. P-OFDM performance evaluation is expressed in signal-to-interference noise ratio (SINR) and bit error rates (BER). The communication channels used are the additive white Gaussian noise (AWGN) channel and the frequency-selective Rayleigh fading (FSRF) channel, while the channel equalization process is considered perfect. The results of the analysis and simulation show that P-OFDM is greater affected by the presence of CFO and IQ imbalance than conventional OFDM system. In AWGN channel, P-OFDM experiences different SINR for each subcarrier. This is different from conventional OFDM system, where all SINRs are the same for all subcarriers. In the FSRF channel, both the POFDM system and the OFDM system experience different SINR for each subcarrier, where the SINRs fluctuation in the P-OFDM system is much larger than in the OFDM system.
Front Cover Vol. 22 No. 1 Chaeriah Bin Ali Wael
Jurnal Elektronika dan Telekomunikasi Vol 22, No 1 (2022)
Publisher : National Research and Innovation Agency

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Back Cover Vol. 22 No. 1 Chaeriah Bin Ali Wael
Jurnal Elektronika dan Telekomunikasi Vol 22, No 1 (2022)
Publisher : National Research and Innovation Agency

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Front Cover Vol. 22 No. 2 Chaeriah Bin Ali Wael
Jurnal Elektronika dan Telekomunikasi Vol 22, No 2 (2022)
Publisher : National Research and Innovation Agency

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Back Cover Vol. 22 No. 2 Chaeriah Bin Ali Wael
Jurnal Elektronika dan Telekomunikasi Vol 22, No 2 (2022)
Publisher : National Research and Innovation Agency

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Front Cover Vol. 23 No. 1 Chaeriah Bin Ali Wael
Jurnal Elektronika dan Telekomunikasi Vol 23, No 1 (2023)
Publisher : National Research and Innovation Agency

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Back Cover Vol. 23 No. 1 Chaeriah Bin Ali Wael
Jurnal Elektronika dan Telekomunikasi Vol 23, No 1 (2023)
Publisher : National Research and Innovation Agency

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Co-Authors Agus Subekti Arief Suryadi Satyawan Bagus Edy Sukoco Budi Prawara Galih Nugraha Nurkahfi Hendrawan Kurniadin Ken Paramayudha Nasrullah Armi Ros Sariningrum Suyoto Suyoto Teguh Praludi Wahid Nova Nugraha Yana Taryana Yaya Sulaeman Yusnita Rahayu