薄膜电阻对微带均衡器的影响研究
doi: 10.3724/SP.J.1146.2005.01348
Study on the Thin-Film Resistor Influence on Microstrip Equalizer
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摘要: 为了使微带均衡器满足衰减特性与给定的误差曲线逐点拟和的要求，就必须使其频率可调、衰减可调、品质因数可调。因此，本文通过大量仿真和实验，研究了加载了薄膜电阻的微带谐振器及其在微带均衡器中的应用，研究分析了薄膜电阻对微带均衡器传输特性及驻波特性的影响。研究结果表明将薄膜电阻加载到微带谐振器上构造微带均衡器，可以通过改变谐振器的尺寸使其频率可调，通过改变电阻阻值及位置使其衰减可调、品质因数可调。大量HFSS仿真及实验证明这种方式很适合微带均衡器的设计制造。本文利用这种结构设计制作出了一个宽带微带均衡器，得到了很好的实验结果。Abstract: In order to make the microstrip equalizer matchs the given attenuation curve respectively ,it should be attenuation adjustable and quality factor adjustable besides frequency adjustable. So in this paper, the novel thin-film resistor loaded microstrip resonator and its application to microstrip equalizer are investigated through numerical simulations and experiments, and the influence of thin-film resistor for microstrip equalizers transmission and standing wave character is studied. The results showed that the microstrip equalizer can be frequency adjustable by changing the dimension of the microstrip reaonator and it can be attenuation adjustable and quality factor adjustable by changing the location and resistance of the loaded thin-film resistors. The High Frequency Structure Simulator (HFSS) was used to simulate this thin-film resistor loaded resonator. Simulation and experiment results show that this thin-film resistor loaded resonator is suitable to microstrip equalizer. Finally a microstrip equalizer composed of this thin-film resistor loaded resonator is designed, fabricated and good results are obtained in the experiment.
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