Design of a digital 90 degree phase shifter with reduction of transmission loss and increase of bandwidth in S-band

Document Type : Original Article

Authors

1 PhD student, Electrical and Computer Faculty, Malek Ashtar University of Technology, Tehran, Iran

2 Professor, Electrical and Computer Faculty, Malek Ashtar University of Technology, Tehran, Iran

3 Assistant Professor, University of Science and Technology, Tehran, Iran

Abstract

The design, simulation, fabrication, and measurement of a digital S-band 90 degree phase shifter for phased array radars employing PIN diodes are covered in this paper. In this study, simulation and measurement results of the insertion loss, return loss and phase difference for the 90 degree bit, as well as the structure's layout and the equations determining its behavior, have all been discussed. In the frequency range of 2.2-3.4GHz equal to 42.8% of the bandwidth, the simulation and measurement results reveal that this 90 degree bit has a maximum insertion loss of 0.7dB (simulation) and 0.85dB (measurement), a minimum return loss of 16.5dB (simulation and measurement), and a maximum phase deviation of ±5.8° (simulation and measurement).

Keywords

Radar
Volume 11, Issue 2
Autumn and Winter
January 2024

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History

  • Receive Date: 29 August 2023
  • Revise Date: 04 November 2023
  • Accept Date: 11 December 2023
  • Publish Date: 22 December 2023

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