公开(公告)号：US3755758A

公开(公告)日：1973-08-28

申请号：US3755758D

申请日：1971-10-04

Applicant: CALIFORNIA MICROWAVE

Inventor： LEESON D

IPC: H03B1/00 ,  H03B5/18

CPC classification number: H03B5/1841 ,  H03B2200/0056 ,  H03B2201/0208 ,  H03B2201/0258

Abstract: A high stability digitally tuned L-band cavity oscillator employs PIN diode switching of the cavity resonant frequency to provide an output signal at any one of 16 discrete frequencies under the control of a four-wire digital input. An analog input is added to adjust the center-line frequency over a bandwidth at least as wide as the least significant incremental step to further provide for AFC and phase lock capability. A half-wave resonator cavity is used with a quarter-wave member notched at intervals along its length. A switching diode adapted to be coupled to a source of digital signals is coupled across each notch to digitally control the electrical characteristics of the resonator and its output frequency. A varactor provides the analog and fine tuning control.

Abstract translation: 高稳定性数字调谐的L波段空腔振荡器采用PIN谐振频率的PIN二极管切换，在四线数字输入的控制下，以16个离散频率中的任一个提供输出信号。 添加模拟输入以调整至少与最低有效增量步长一样宽的带宽上的中心线频率，以进一步提供AFC和锁相能力。 使用半波谐振腔，其四分之一波长的部件沿其长度间隔开。 适于耦合到数字信号源的开关二极管跨越每个陷波耦合，以数字地控制谐振器的电特性及其输出频率。 变容二极管提供模拟和微调控制。