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A new phase shifting network for both 180deg and 90deg phase shift with small phase errors over an octave bandwidth is presented. The theoretical bandwidth is 67% for the 180deg phase bit and 86% for the 90deg phase bit when phase errors are plusmn2deg. The proposed topology consists of a bandpass filter (BPF) branch, consisting of a LC resonator and two shunt quarter-wavelength transmission lines...
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