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1 August 1991 Analysis of evanescent coupling in waveguide modulators
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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.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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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