【作者】 何劲； 刘勇； 刘靖琳； 唐小宏；

【Author】 He Jing;Liu Yong;Liu Jing-lin;Tang Xiao-Hong;School of Electronic Science and Engineering, University of Electronic Science and Technology of China;

【机构】 电子科技大学,电子科学与工程学院；

【摘要】 本文介绍了一种输出频率为21.5～36.5GHz的宽带频率源。该频率源采用"乒乓"锁相的设计方法,使得频率源在每个频点工作时间500us的情况下,频率切换时间小于0.1us;通过对锁相芯片产生的2.6875～4.5625GHz的信号进行三次二倍频+分四段滤波的方式最终输出频率为21.5～36.5GHz的宽带信号。经实验验证,频率源输出频率为21.5～36.5GHz,输出功率>3dBm,杂散抑制远优于60dBc,相位噪声优于-80dBc/Hz@10kHz。更多还原

【Abstract】 A wideband frequency source that output frequency from 21.5GHz to 36.5GHz is introduced in this paper. The frequency source adopts the design method of "ping pong" phase lock, so that the frequency switching time is less than 0.1us when each frequency point works for500us. The phase-locked chips generate the signal of 2.6875～4.5625GHz. And then double frequency in three times and filtered in four segments. The final output frequency is 21.5～36.5GHz broadband signal. The experimental results show that the output frequency of the source is 21.5～36.5GHz, the output power >3dBm, the spurious rejection is much better than60dBc and phase noise is better than-80dBc/Hz@10kHz.更多还原