Compact 94-GHz 4×4 Butler Matrix Design in IPD Technology

Kun Dong Chiou*, Yun Chien Tseng, Donglin Gao, Shuping Li, Chien Nan Kuo, Chung Tse Michael Wu

*Corresponding author for this work

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

Abstract

In this work, we designed 94-GHz 4× 4 Butler matrix circuits in glass-based integrated-passive-device (IPD) technology. Given the design rule constraints, the inevitable crossover structure is carefully planned as a miniature low-pass filter carrying simulated 0.2 dB insertion loss, successfully incorporating parasitics with good matching. The fabricated standard Butler circuit exhibits insertion loss of 8 dB, with mismatch less than 1 dB and phase difference less than 10 degrees at 94 GHz. Size reduced by 34%, the miniaturized circuit shows insertion loss about 1 dB worse but phase mismatch improved by 3 degrees. The core areas of the standard and miniaturized circuits are 1.42× 1.22 mm2 and 1.04× 1.08 mm2, respectively. The designs are applicable to beamforming phased arrays in the W band.

Original languageEnglish
Title of host publication2023 Asia-Pacific Microwave Conference, APMC 2023
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages814-816
Number of pages3
ISBN (Electronic)9781665494182
DOIs
StatePublished - 2023
Event31st Asia-Pacific Microwave Conference, APMC 2023 - Taipei, Taiwan
Duration: 5 Dec 20238 Dec 2023

Publication series

NameAsia-Pacific Microwave Conference Proceedings, APMC
ISSN (Electronic)2690-3946

Conference

Conference31st Asia-Pacific Microwave Conference, APMC 2023
Country/TerritoryTaiwan
CityTaipei
Period5/12/238/12/23

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