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Integrated Ferroelectrics
An International Journal
Volume 130, 2011 - Issue 1
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Original Articles

Improved Ferroelectric Phase Shifter by Inserting Spiral Inductors into Ground

Jihua Zhang State Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronics Science and Technology of China, Chengdu, Sichuan, 610054, P. R. China
,
Hongwei Chen State Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronics Science and Technology of China, Chengdu, Sichuan, 610054, P. R. China
,
Guanhuan Lei State Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronics Science and Technology of China, Chengdu, Sichuan, 610054, P. R. China
,
Wei He State Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronics Science and Technology of China, Chengdu, Sichuan, 610054, P. R. China
,
Yu Liao State Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronics Science and Technology of China, Chengdu, Sichuan, 610054, P. R. China
,
Qiaozhen Zhang State Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronics Science and Technology of China, Chengdu, Sichuan, 610054, P. R. China
&
Chuanren Yang State Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronics Science and Technology of China, Chengdu, Sichuan, 610054, P. R. China
 show all
Pages 27-32 | Received 20 Aug 2011, Published online: 14 Dec 2011
 
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Abstract

In this paper, a method is introduced to improve the performance of ferroelectric phase shifter. The influences of periodically inserting spiral inductor into ground of coplanar waveguide (CPW) are investigated. Three dimensional electro-magnetic simulation shows that at frequency of 25 GHz, the maximal phase differential will be 449°, which is 97° more than the conventional one with no spiral inductor loaded. The novel ferroelectric phase shifter is also fabricated. Comparing with the conventional phase shifter, additional 49° phase shift is obtained at 18 GHz.

Acknowledgement

This research is supported by the State Key Program for Basic Research of China (No. 61363).

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