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Study on the Design and Fabrication of $180^{\circ}$ Hybrid Ring Coupler using MEMS Technology for millimeter wave applications  

Ko Baek Seok (Millimeter-wave INnovation Technology research center, Dongguk University)
Baek Tae Jong (Millimeter-wave INnovation Technology research center, Dongguk University)
Lim Byeong Ok (Millimeter-wave INnovation Technology research center, Dongguk University)
Kim Sung Chan (Millimeter-wave INnovation Technology research center, Dongguk University)
Shin Dong Hoon (Millimeter-wave INnovation Technology research center, Dongguk University)
Rhee Jin Koo (Millimeter-wave INnovation Technology research center, Dongguk University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.42, no.3, 2005 , pp. 33-38 More about this Journal
Abstract
In this paper, we have designed and fabricated a hybrid ring coupler to prove the fabrication possibility of various passive components, applying millimeter wave using newly proposed transmission lines, i.e. BAMLs. The characteristics of the fabricated hybrid ing coupler were a the S31(coupling) of 3.58 dB, the S21(thru) of 3.31 dB at the 60 GHz center frequency, the S11(return loss) over 16.17 dB, S41(isolation) over 55 dB at 61 GHz, and the phase difference between port 2 and port 3 of $180{\pm}loat$ 60GHz. In order to reduce the size of hybrid ring coupler, we designed the hybrid ring coupler which inserts a slow wave structure. With this structure, we were able to reduce the hybrid ring coupler by $33\%$ area.
Keywords
MMIC; Surface MEMS; Microstrip line; DAML; Slow Wave Structure; coupler;
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Times Cited By KSCI : 1  (Citation Analysis)
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