| 摘要 |
A BPSK (Binary-Phase-Shift-Keying) modulator having reduced amplitude and phase errors includes two non-ideal N DEG -bit phase shifters disposed between two 3 dB quadrature couplers to perform out-of-phase combining. When the two phase bits are alternately switched between a reference state and a signal state being N DEG out of phase with respect to the reference by the cancellation, a 180 DEG binary phase shift keying modulator having reduced amplitude and phase errors relative to the individual phase shifters is provided.
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