晶体管谐波振荡器采用基频较低的晶体管,所以成本低和可以用低频晶体实现稳频。但是基频较低时,谐振器的尺寸一般都比较大。例如,1千兆赫腔体的尺寸为15×15×15厘米~3,微带直线谐振器电路板的尺寸为18×3×0.3厘米~3。为了解决这一问题,美国马克特大学电子工程与计算机科学部的P.杰泽克等人提出了采用微带环状谐振器的办法,电路尺寸可缩小到5×5×0.3厘米~3。微带环状谐振器共发射极柯尔匹兹型振荡 Transistor Harmonic Oscillator uses a lower fundamental frequency transistor, so low cost and low frequency crystal can be used to achieve frequency stabilization. However, the fundamental frequency is lower, the size of the resonator are generally larger. For example, a 1 GHz cavity has a size of 15 × 15 × 15 cm 3 and a microstrip linear resonator has a size of 18 × 3 × 0.3 cm -3. In order to solve this problem, P. Jacquesk et al. From the Department of Electrical Engineering and Computer Science of the University of Market of the United States put forward the method of using a microstrip ring resonator. The circuit size can be reduced to 5 × 5 × 0.3 cm -3. Microstrip ring resonator co-emitter Coiltz-type oscillation