CAJ | 학술논문

设计并制作了一款工作于VHF频段的低通高通双频LC合路器。采用K-m型滤波器提升了带外抑制能力,改善了滤波器的矩形系数。使用Designer软件对电路模型进行仿真优化,最后根据仿真模型进行加工测试,设计出了一款低插损、高抑制的LC合路器。实测结果表明,该器件带外抑制高于79 dB,插入损耗低于0.2 dB,并且体积小,结构简单,使用的LC元件更少,具有很高的应用价值。
설계병제작료일관공작우VHF빈단적저통고통쌍빈LC합로기。채용K-m형려파기제승료대외억제능력,개선료려파기적구형계수。사용Designer연건대전로모형진행방진우화,최후근거방진모형진행가공측시,설계출료일관저삽손、고억제적LC합로기。실측결과표명,해기건대외억제고우79 dB,삽입손모저우0.2 dB,병차체적소,결구간단,사용적LC원건경소,구유흔고적응용개치。
A lowpass and highpass combiner worked at VHF band was designed and manufactured. K-m type filter was applied to promote the attenuation and rectangular coefficient of the filter. Optimized simulation on circuit model was obtained by software of Designer,at last a physical LC combiner with lower insertion loss and higher inhibition was manufactured based on the simulation model. The measured results show that the attenuation is above 79 dB and the insertion loss is less than 0.2 dB. Moreover,the filter has small size,simple structure,less use of LC compo-nents and high practical value.