Abstract
The cascaded-match reflection-type phase shifter (CMRTPS) was recently introduced to utilize the full bandwidth of its 3-dB quadrature directional couplers. A monolithic realization of the CMRTPS is presented that maintains a high level of performance over two octaves, while using experimental one octave bandwidth offset multilayer folded directional couplers. Standard GaAs foundry processing was used to fabricate the MMIC. At the 10-GHz center frequency, the measured relative phase shift varied from 0 to 98 degrees , with a decreasing bias potential from 0 to -10 V. A maximum r.m.s. phase error of +or-2.8 degrees is maintained across the 4.4 to 16.1 GHz frequency range, for all bias levels.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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