In this paper, a 7.13~7.37 GHz wideband frequency hopping source base on PLL theory is introduced.The charge pump phase locking loop(CPPLL) chip ADF4108 which produce frequency hopping signal is controlled by complex programmable logic device(CPLD).The bandwidth of the system is high to 240 MHz,The output signal power is about 10 dBm,and the level fluctuation is 0.7 dB.Spur restraining is less than -70 dBc.The 6th order micro strip low pass filters using in the output of the module which with high data speed and small area.And then the two order harmonic suppression is less than -60 dBc.The test data show that the hopping frequency synthesizer has good performance, such as low jumping time,high spur restraining,low phase noise and high stability.