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학술지 Design of a Ka-Band Coupled Microstrip Line Ferroelectric Phase Shifters
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저자
류한철, 문승언, 이수재, 곽민환, 김영태, 강광용
발행일
200504
출처
Integrated Ferroelectrics, v.77 no.1, pp.129-137
ISSN
1058-4587
출판사
Taylor & Francis
DOI
https://dx.doi.org/10.1080/10584580500414317
협약과제
04MB5700, 위상 배열 시스템 제어용 강유전체 이상기 MMIC기술, 이수재
초록
We report on the design, fabrication and microwave performance of coupled microstrip line phase shifters (CMPS) based on (Ba,Sr)TiO3 (BST) thin films for Ka-band phased array antenna. Single phase BST thin films were deposited by pulsed laser deposition (PLD) on (001) MgO substrates. The CMPS were analyzed and designed by using an exact analysis in terms of even and odd mode phase velocities rather than the approach in which the velocities are averaged. These CMPS were tested in Ka-band, at room temperatures, and between the bias ranges of 0-200 V. The measured differential phase shift was 458째 and the insertion loss varied between 7.8 dB and 10.5 dB at 29 GHz in the bias ranges of 5-200 V. The CMPS exhibited a figure of merit of about 44째/dB.
KSP 제안 키워드
BST thin film, Differential phase shift, Exact analysis, Figure of merit, Phase Shifter, Single-phase, coupled microstrip line, even and odd modes, ferroelectric phase, insertion loss, ka-band