ANALYSIS OF GEOMETRY CHANGES TO THE ISOLATION ON THE MICROSTRIP BRANCHLINE COUPLER

Authors

  • Yudi Barnadi
  • Syahrul Nanda
  • Reggy Zian
  • Moh. Iqbal
  • Yoga Purwana

Abstract

In this research, Microstrip Branch line Coupler based simulation will be carried out with each input
and output impedance of 50Ω. where has a different shape (geometry) but has the same dimensions,
one is H shape junction and the other is J shape junction. Coupler is a passive multiport device that
each port can be the entry point or exit point of the wave. The material used is Epoxy, and works at a
frequency of 3.0 Ghz, and can be applied to the duplexer used in pulse radar antenna systems. First,
using the initial parameters from the calculation results there was a shift in the working frequency of
the desired VSWR value ≤ 1.5 and the desired coupling factor of -3 dB. For coupler simulation, CST
2019 software is used. The most influential coupler simulation results are the isolation value for H
shape junction S14 = -44.79 dB and J shape junction -52,296 dB. Other parameters J Junction Return
loss -30,725 dB, insertion loss -3.5926 dB, Factor coupling -3.42 dB. While the value of vswr is = 1.
036, for the H junction value can be seen in the table.

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Published

2020-12-13

How to Cite

Yudi Barnadi, Syahrul Nanda, Reggy Zian, Moh. Iqbal, & Yoga Purwana. (2020). ANALYSIS OF GEOMETRY CHANGES TO THE ISOLATION ON THE MICROSTRIP BRANCHLINE COUPLER. PalArch’s Journal of Archaeology of Egypt / Egyptology, 17(5), 1058-1068. Retrieved from https://www.archives.palarch.nl/index.php/jae/article/view/2953