Now the full integrated pll( phase locked loop ) chip is used widely in radio frequency circuit. The bpsk (binary phase shift keying) modulator of 220MHz carrier is consist of local oscillator and modulator. The local oscillator adopts ADF4360-8, the double balanced mixers is used as bpsk modulator. To gain lower phase noise of local oscillator, the design work of circuit is carried out based on the analyse of the key factors that affect the phase noise level. The phase noise and EVM etc is measured by the special instrument after the hardware is completed. The data of the testing shows that the project based on the full integrated pll is satisfied with the need of the design input.
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常鸿,穆擎炜. 基于集成锁相环的BPSK调制器设计与实现[J]. 科学技术与工程, 2010, (17): . changhong, muqingwei. The design and implementation of bpsk modulation based on integrated Phase-Locked Loop[J]. Science Technology and Engineering,2010,(17).