MMIC broadband braided microstrip coupler | Zendy

Willems David A. | Zendy

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MMIC broadband braided microstrip coupler

Author(s) -

Willems David A.

Publication year - 1994

Publication title -

microwave and optical technology letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.304

H-Index - 76

eISSN - 1098-2760

pISSN - 0895-2477

DOI - 10.1002/mop.4650071510

Subject(s) - return loss , broadband , microstrip , hybrid coupler , bandwidth (computing) , rat race coupler , monolithic microwave integrated circuit , microwave , materials science , magic tee , power dividers and directional couplers , optoelectronics , electrical engineering , engineering , telecommunications , amplifier , antenna (radio)

This article presents a broadband quadrature coupler realized using a novel braided microstrip structure that consists of 64 air‐bridge crossovers. The test results of the 2.5–8‐GHz single‐section coupler fabricated on a 125‐μm‐thick GaAs substrate are presented. This coupler achieved better than 17‐dB return loss, 11 dB of isolation and ±0.75 of amplitude variation over the almost 2‐octave bandwidth. This bandwidth and performance are the best reported for a braided microstrip coupler. © 1994 John Wiley & Sons, Inc.

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