K波段注入锁相固态稳频源

A K-Band Solid-State Source Stabilized by Injection Locking

本文报道一个结合毫米波和亚毫米波频率合成和频率精密测量的实际需要而研制的1．25厘米波段注入锁相固态微波稳频源。该稳频源主要由840MHz注入锁相晶体管振荡器、将840MHz信号27信频到2268GHz的阶区二极管高次培频器和22.68GHz注入锁相体效应管振荡器组成。其频率长期稳定度和频率准确度为10（-8）量级，输出频率在22.56GHz至22.96GHz范围内以2.7kHz或6.75kHz的步进间隔断续可调，输出功率约60mW。已被作为短厘米波段的频率基准成功地用于4毫米波段的频率合成和HCN亚毫米被激光器337μm谱线的频率精密测量。

A 1. 25cm-band solid-state source stabilized by injection locking is constructed. It mainly consists of a 840MHz injection phase-locked transistor oscillator, a step recovery diodes (SRD) frequency multiplier multiplying 840MHz by 27 to 22. 68GHz, and a 22. 68GHz injection phase-locked Gunn oscillator. Its long-term frequency stability is in 10-8 order of magnitude, the output frequency from 22. 56GHz to 22. 96GHz is discretely tunable on steps of 2. 7kHz or 6. 75kHz and the output power is about 60 mW. It has been used as a high stability frequency source in precise frequency measurement ot millimeter and submillimeter waves successfully.