Monolithic Ka-band phase shifter using voltage tunable BaSrTiO/sub 3/ parallel plate capacitors
Authors:
- E.G. ErkerEEE.G. Erker
- A.S. NagraANA.S. Nagra
- Yu LiuYLYu Liu
- P. PeriaswamyPPP. Periaswamy
- T.R. TaylorTTT.R. Taylor
- J. SpeckJSJ. Speck
- R.A. YorkRYR.A. York
- 1 January 2000
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Microwave and Guided Wave Letters
- Vol. 10 (1) , 10-12
Abstract
—A monolithic Ka-band phase shifter circuit that em- ploys voltage tunable BaSrTiO3 (BST) parallel plate capacitors is presented here. The circuit is capable of continuous 0 ‐157 phase shift at 30 GHz with an insertion loss of only 5.8 dB and return loss better than 12 dB. In addition to promising loss performance (27.1 /dB) at 30 GHz, the circuit reported here has several advan- tages over previously reported BST phase shifters such as mod- erate control voltages (20 V), room temperature operation, and compatibility with monolithic fabrication techniques. Index Terms—Coplanar waveguides, delay lines, ferroelectricKeywords
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