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南京固体器件研究所研制成的八毫米单调谐体效应管振荡器采用Kurkawa提出的传输腔稳频电路,由一个TE_(011)模式的高Q腔进行稳频,以满足微波通讯设备对噪声及频率稳定度的要求。 振荡器中的体效应二极管安装在同轴线的末端,同轴线的另一端接由羧基铁制成的吸收体,同轴线的中段与高Q腔耦合,高Q腔通过小圆孔同外负载耦合。 为了改善振荡器的频温系数,除了选择频温系数小的体效应二极管外,主要途径是提高谐振腔的Q值(这对降低调频噪声也是有益的),另外应选择低膨胀系数的金属材料制作腔体。 该振荡器经过一年时间的研制,获得了良好的性能。其特点是受负载影响小,无跳模问
The eight millimeter monomorphic body-effect tube oscillator developed by Nanjing Institute of Solid-State Devices adopts the transmission cavity frequency stabilization circuit proposed by Kurkawa and is frequency-stabilized by a high-Q cavity of TE 011 mode to meet the requirements of microwave communication equipment for noise and Frequency stability requirements. The body effect diode in the oscillator is mounted on the end of the coaxial line and the other end of the coaxial line is connected to the absorber made of the carboxyl iron. The middle of the coaxial line is coupled with the high Q cavity. The high Q cavity passes through the small hole External load coupling. In order to improve the frequency-temperature coefficient of the oscillator, in addition to the selection of body-effect diodes with small frequency-temperature coefficient, the main approach is to increase the Q value of the resonator (which is also beneficial for reducing the FM noise). In addition, metal materials with low expansion coefficients Making cavity. The oscillator after a year of development, get a good performance. It is characterized by the load of small, no jump mode asked