Abstract:

This paper describes the high carrier isolation of the S band UQPSK modulation and frequency multiplier module design technology.The UQPSK modulation circuit design process is described,and an analysis of the key factors that affect the final performance is made.The paper also covers retaining overall performance while simplifying the circuit and reducing the volume and the allocation of the device specification at all levels.The high performance S-band UQPSK modulation and multiplier module is successfully developed.

Key words: UQPSK;frequency quadrupler;multi-chip module;microwave integrated circuit