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利用负阻振荡的工作原理,使用ADS和HFSS仿真软件对K波段介质振荡器进行了仿真设计,加工并进行了测试,同时设计了一个双工器,使基波和谐波分别从两个端口输出。通过实测结果可以看出,双工器很好地起到了隔离作用。介绍了介质振荡器设计的重点,阐述了双工器的工作原理,分析了介质谐振器和微带线耦合的等效电路,最后给出了介质振荡器(DRO)的实测结果:在基波输出端口,输出功率为6.75 dBm,二次谐波抑制度为23 dBc,相位噪声为-96.28 dBc/Hz@100 kHz;在谐波输出端口,输出功率为1.86 dBm,基波抑制度为23 dBc,相位噪声为-87.65 dBc/Hz@100 kHz,达到很好的分离作用,达到预期效果。
Using the working principle of negative resistance oscillation, the K-band dielectric oscillator was simulated, processed and tested by using ADS and HFSS simulation software. At the same time, a duplexer was designed to make the fundamental and harmonics from two ports Output. It can be seen from the measured results that the diplexer has played a good role in isolation. The design principle of the dielectric oscillator is introduced, the working principle of the duplexer is expounded, the equivalent circuit of coupling the dielectric resonator with the microstrip line is analyzed, and the measured results of the dielectric oscillator (DRO) Output port with output power of 6.75 dBm, second harmonic rejection of 23 dBc, and phase noise of -96.28 dBc / Hz @ 100 kHz; output power of 1.86 dBm at harmonic output port and fundamental suppression of 23 dBc , Phase noise of -87.65 dBc / Hz @ 100 kHz, to achieve a good separation, to achieve the desired results.