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Proceedings Paper

Analysis of evanescent coupling in waveguide modulators
Author(s): Joe C. Bradley; Albert L. Kellner
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Paper Abstract

A compact 5-bit MMIC phase shifter has been developed utilizing EEl' switches and coplanar waveguide delay lines. The device has constant time delay over a bandwidth of more than 18% with an accuracy of±1 .2 Ps at X-band (±5°). An 1 1 .5 GHz version has less than 1 2 dB of insertion loss for any of its 32 states and an overall chip dimension of 2.25 x 2 .50 mm. A 20 GHz version has less than 1 1 dB of insertion loss and an overall chip dimension of 2.0 x 3.0 mm. Unit-to-unit variation in absolute time delay is less than 2 ps across two wafer lots andfour wafers.

Paper Details

Date Published: 1 August 1991
PDF: 7 pages
Proc. SPIE 1476, Optical Technology for Microwave Applications V, (1 August 1991); doi: 10.1117/12.45586
Show Author Affiliations
Joe C. Bradley, Westinghouse Electric Corp. (United States)
Albert L. Kellner, Univ. of California/San Diego (United States)


Published in SPIE Proceedings Vol. 1476:
Optical Technology for Microwave Applications V
Shi-Kay Yao, Editor(s)

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