Abstract
A compact and broadband bridged-T phase shifter has been developed. The proposed circuit is based on a HPF/LPF phase shifter with a bridged-T circuit topology. The phase shifting circuit eliminates the SPDT switches to minimize the circuit size while keeping broadband performances. To verify this methodology, we have fabricated an 11.25deg. MMIC phase shifter whose size is 0.14mm2. The phase shifter has achieved the insertion loss of 1.2dB, and the phase shift of 11.25deg. +/-1.5deg. in 6-16GHz band. An X-band 5-bit MMIC phase shifter has also been fabricated, and achieved RMS phase error of 6deg. in 7.5-10.5GHz band with the chip size of 2.5mm2.
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