Design of LO Phase Shifter Based on Quadrature Hybrid Ring Coupler for IQ Mixer in Synthetic Aperture Radar Applications

Abdurrasyid Ruhiyat, Farohaji Kurniawan, Bambang Setiadi, Catur Apriono

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Synthetic Aperture Radar (SAR) can produce high-resolution images and operate in any weather condition, day and night, without a light source. One of the important components that construct an RF SAR sub-system is the IQ Mixer, which mixes the base chirp signal with the carrier signal and increases the bandwidth of the transmitted signal to twice the maximum frequency of the base chirp signal, which is important because the range resolution of SAR depends on the bandwidth of the transmitted signal. This research proposes a LO Phase Shifter design that will be used as a supporting component for IQ Mixer in Synthetic Aperture Radar applications based on a Quadrature Hybrid Ring Coupler. The result from the fabricated measurement shows that the coupler has a good S-parameter value. S11 has a low reflection of -33.85 dB, S41 has a high isolation of -29.56 dB, S21 and S31 have low attenuation with amplitude unbalance of 0.2 dB and phase unbalance of 1.93 degrees. The requirement bandwidth of 150 MHz at the center frequency of 5.5 GHz was also achieved.

Original languageEnglish
Title of host publication2024 International Conference on Green Energy, Computing and Sustainable Technology, GECOST 2024
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages101-104
Number of pages4
ISBN (Electronic)9798350357905
DOIs
Publication statusPublished - 2024
Event2024 International Conference on Green Energy, Computing and Sustainable Technology, GECOST 2024 - Miri Sarawak, Malaysia
Duration: 17 Jan 202419 Jan 2024

Publication series

Name2024 International Conference on Green Energy, Computing and Sustainable Technology, GECOST 2024

Conference

Conference2024 International Conference on Green Energy, Computing and Sustainable Technology, GECOST 2024
Country/TerritoryMalaysia
CityMiri Sarawak
Period17/01/2419/01/24

Keywords

  • coupler
  • IQ mixer
  • microstrip
  • phase shifter
  • SAR

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