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研制了一种X波段IMPATT(雪崩碰撞渡越时间)振荡器,具有半瓦以上的稳定输出功率。振荡器由主腔和一个起稳定作用的直接偶合反射腔构成。在0°至50℃温度变化范围内,振荡器的频率稳定度为2.6×10~(-5),距载频500kHz处在1kHz带宽内的均方根噪声漂移为15Hz。分析了电路和器件的导纳特性,从而确定了稳定所需的适当电路条件,在此基础上进行了设计考虑。由于稳定而引起的输出功率损失小于0.4dB,振荡器可以工作在10.7至11.7GHz的频率范围内。
An X-band IMPATT (avalanche collision transit time) oscillator has been developed with a stable output power of more than a half watt. The oscillator consists of a main cavity and a stabilizing direct coupling reflector. The frequency stability of the oscillator is 2.6 × 10 -5 in the temperature range of 0 ° to 50 ° C and the rms noise drift in the 1 kHz bandwidth at 500 kHz is 15 Hz. The admittance characteristics of the circuit and the device are analyzed to determine the appropriate circuit conditions for the stabilization and design considerations are based on this. Due to the stable output power loss caused by less than 0.4dB, the oscillator can work in the 10.7 to 11.7GHz frequency range.