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Design and Fabrication of the 94 GHz Branch-line Bandpass Filter using CPW structure  

Kwon, Hyuk-Ja (Millimeter-wave INnovation Technology research center, Dongguk univ.)
Bang, Suk-Ho (Millimeter-wave INnovation Technology research center, Dongguk univ.)
Lee, Sang-Jin (Millimeter-wave INnovation Technology research center, Dongguk univ.)
Yoon, Jin Seob (Millimeter-wave INnovation Technology research center, Dongguk univ.)
Rhee, Jin-Koo (Millimeter-wave INnovation Technology research center, Dongguk univ.)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SD / v.44, no.5, 2007 , pp. 36-41 More about this Journal
Abstract
We report the 94 GHz CPW branch-line bandpass filter for planar integrated millimeter-wave circuits. The branch-line coupler operates as a transversal filtering section by connecting the coupling ports to the open load stubs and taking the isolation port as the output node. For design of the 94 GHz branch-line bandpass filter, we built the CPW library and optimized the characteristic impedances and the lengths of the branch-line coupler and the open load stubs. The fabricated 94 GHz bandpass filter exhibits an insertion loss of 2.5 dB with an 11.7 % 3 dB relative bandwidth and the return loss is -18.5 dB at a center frequency of 94 GHz.
Keywords
CPW; Bandpass filter; Branch-line coupler; Planar integrated millimeter-wave circuits;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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