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IEEE Microwave and Guided Wave Letters
Volume 10 Number 1, January 2000

Table of Contents for this issue

Complete paper in PDF format

Monolithic Ka-Band Phase Shifter Using Voltage Tunable BaSrTiO3 Parallel Plate Capacitors

Erich G. Erker, Amit S. Nagra, Yu Liu, Padmini Periaswamy, Troy R. Taylor, James Speck and Robert A. York

Page 10.

Abstract:

A monolithic Ka-band phase shifter circuit that employs 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 advantages over previously reported BST phase shifters such as moderate control voltages (20 V), room temperature operation, and compatibility with monolithic fabrication techniques.

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