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用BaO-TiO_2陶瓷介质谐振器稳频的GaAs FET集成振荡器提供一种高稳定低噪声小型微波功率源。新研制的陶瓷材料具有互相补偿的膨胀系数和介电常数温度系数,从而得出较小的谐振频率温度系数。振荡器在6千兆赫上得到输出功率100毫瓦,效率为17％,频率温度系数低达2.3ppm/℃。由于稳频使调频噪声电平减小30分贝以上。精确地测量了振荡器和谐振器的动态特性,以确定等效电路形式。介绍了基于这些等效电路形式的大信号设计理论,以便在振荡器和谐振腔之间实现最佳耦合条件。本稳频振荡器的性能可满足微波通讯系统的要求。
GaAs FET Integrated Oscillator Stabilized with BaO-TiO_2 Ceramic Dielectric Resonator Provides a Highly Stable, Low Noise Small Microwave Power Source. Newly developed ceramic materials have mutually compensated expansion coefficient and dielectric constant temperature coefficient, resulting in smaller resonant frequency temperature coefficient. The oscillator produces 100 milliwatts of output power at 6 gigahertz, an efficiency of 17% and a frequency-temperature coefficient as low as 2.3 ppm / ° C. As a result of frequency modulation to reduce the noise level of 30 dB or more. Accurately measured the dynamic characteristics of the oscillator and resonator to determine the equivalent circuit form. The theory of large signal design based on these equivalent circuit forms is introduced in order to achieve optimal coupling conditions between the oscillator and the resonator. The performance of the frequency stabilization oscillator can meet the requirements of the microwave communication system.