상세정보
학술지
A Study on Ferroelectric Phase Shifter with Photonic-Bandgap (PBG) Structure
- 발행일
- 200504
- 출처
- Integrated Ferroelectrics, v.63 no.67, pp.63-67
- ISSN
- 1058-4587
- 출판사
- Taylor & Francis
- 협약과제
- 04MB5700, 위상 배열 시스템 제어용 강유전체 이상기 MMIC기술, 이수재
- 초록
- In order to get the low-loss microwave tunable device, we adopted the photonic-bandgap (PBG) structure based on BST thin films on MgO (001) single crystal substrate. We designed and fabricated a microstrip ferroelectric phase shifter with PBG structure for microwave integrated circuit. The proposed multilayer PBG structure consisted of microstrip tunable interdigital (IDT) patterns atop BST thin film and two square defected areas in the ground metallic plane. To analyze microwave characteristics of the proposed multilayer PBG structure, finite-element-method (FEM) was used. The fabricated phase shifter shows 103째 differential phase shift, 3.3 dB insertion loss, and return loss of better than 20 dB at 20 GHz with de-bias variation from 0 V to 110 V.
- KSP 제안 키워드
- BST thin film, De-Bias, Differential phase shift, Finite Element Method(FEM), PBG structure, Phase Shifter, Return loss(RL), Single crystal, Tunable device, ferroelectric phase, insertion loss