By switching the feedback clock from one delay cell to another, the equivalent number of delay cells is changed, and the output frequency will hop to a different band within 9.5 nSec.

• 我们提出了一个可以改变倍频数的频率倍化器。利用切换不同的回授讯号，即可改变倍频数。因此输出频率即可在9.；5奈秒内切换至不同的频带。