Design of a Low-bit Amplitude-Phase Control Module for High-precision Time Modulation.

A low-bit amplitude-phase control module is designed for high-precision of time modulation, which consists of a 1-bit attenuator and a 2-bit phase shifter. The attenuation dynamic range the time modulation can be improved by introducing a 1-bit attenuator. Simulation results show that the return loss of the module is less than −15 dB, the amplitude difference is −0.4 dB ~ 0.4 dB, and the phase difference is −2.2° ~2.2° in the frequency range from 14.4 GHz to 16.8 GHz. Detailed time modulation results will be presented at the conference.