Development of a high performance millimeter-wave band pass filter which consists of dielectric circuit.

在本研究中，提出了一个高Q谐振腔来实现具有低损耗特性的带通滤波器。第一年，通过对谐振电磁场的严格分析，提出了谐振器的设计方法。利用这些谐振器设计了多级窄带通滤波器，其低损耗特性在60 GHz时插入损耗约为1 dB。第二年，研究了改善杂散特性的滤波电路布置。结果表明，所设计的带通滤波器在几十GHz的宽频率范围内具有无杂散响应。研究结果总结如下：(1)给出了考虑高Q特性和高阶模抑制的谐振腔优化设计过程。(2)对耦合谐振器的耦合谐振特性进行了分析和计算，获得了滤波器设计的基础数据。(3)发现由所设计的高Q介电盘谐振器组成的毫米波窄带通滤波器具有低损耗特性。(4)通过优化谐振腔布置，可以显著改善滤波器的杂散特性。

In this research, a high Q resonator was presented to realize a band pass filter having a low-loss characteristic. In the first year, a resonator design method using a rigorous analysis of the resonance electro-magnetic fields has been developed. The multi stage narrow band pass filters have been designed with these resonators and the low-loss characteristics of about 1 dB insertion loss at 60 GHz. In the second year, the filter circuit arrangement to improve the spurious characteristic has been investigated. As a result, a spurious free response for the designed band pass filter was obtained over the wide frequency rang of several tens GHz. Research results are summarized as follows ;(1)An optimized resonator design procedure considering the high Q characteristic and the higher order mode suppression is shown with the several design charts.(2)The coupling resonance characteristics of the coupled resonators are analyzed and calculated to obtain the basic data for filter designs.(3)It is found that the millimeter-wave narrow bandpass filter which consists of the designed high Q dielectric disk resonators can have a low-loss characteristic.(4)It is found that the spurious characteristic of the filters can be improved dramatically by optimizing the resonator arrangement.