3mm谐波振荡器的电调谐

Varactor Tuning for 3mm Harmonic Oscillator

本文在分析谐波振荡器的电路特性的基础上,针对谐波振荡器的电调谐问题,提出了“电调基频,提取谐波”的新构想,并以该构想指导振荡器的电路设计。最后,采用国产参放变容管作为电调元件于1988年在国内首次研制成功了3mm电调谐波振荡器。该振荡器最大电调带宽超过4GHz;当电调带宽等于±100MHz时,输出功率大于10mW;当电调带宽等于±500MHz时,输出功率大于5mW。

According to the circuit properties of a harmonic oscillator, we present a new idea that is varactor tuning at the fundamental frequcncy(VTFF) and extracting power from the harmonic frequency (EPHF) for electronic tuning of harmonic oscillator. Then we adopt the idea to design oscillator circuits. Finally, we successfully developed the first 3mm electronically tuned harmonic oscillator in our country in 1988, using a varactor diode made in China which is suitable for a parametric amplifier as an electronic tuning device. The maximum electronically tunde bandwidth (ETB) of the oscillator is more than 4 GHz. When the ETB is equal to ±100MHz, the output power is greater than 10mW. When the ETB is equal to±500MHz, the output power is greater than 5mW.