Analysis of evanescent coupling in waveguide modulators

Joe C. Bradley; Albert L. Kellner

doi:10.1117/12.45586

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1 August 1991 Analysis of evanescent coupling in waveguide modulators

Joe C. Bradley, Albert L. Kellner

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Proceedings Volume 1476, Optical Technology for Microwave Applications V; (1991) https://doi.org/10.1117/12.45586
Event: Orlando '91, 1991, Orlando, FL, United States

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.

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Joe C. Bradley and Albert L. Kellner "Analysis of evanescent coupling in waveguide modulators", Proc. SPIE 1476, Optical Technology for Microwave Applications V, (1 August 1991); https://doi.org/10.1117/12.45586

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