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WIDEBAND X-BAND MICROSTRIP BUTLER MATRIX
Author(s) -
Jun He,
BingZhong Wang,
Qingqiang He,
Yu-Xia Xing,
Zhongliang Yin
Publication year - 2007
Publication title -
electromagnetic waves
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 89
eISSN - 1559-8985
pISSN - 1070-4698
DOI - 10.2528/pier07042302
Subject(s) - wideband , microstrip , matrix (chemical analysis) , materials science , physics , electronic engineering , engineering , composite material
—This paper presents the design of a wideband X-band microstrip 4×4Butler matrix. The wideband performance of the Butler matrix means that it possesses equal coupling and difference of phases throughout the operating band. Design of the wideband components such as 3-branch branch line hybrid, crossover and Schiffman line phase shifter are presented in this paper. A final design of the Butler matrix is proposed. The Butler matrix exhibits couplings and phase errors within −6.7 ± 0.7 dB and 10, over a 20% bandwidth with a center frequency at 10 GHz.

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