CAJ | 학술논문

C波段LTCC带通滤波器的设计,由于其谐振器采取集中LC元件,其Q值偏低,且LTCC厚膜集中元件大小在C波段相对偏大,为此在设计方面主要考虑利用传输线结构的分布参数谐振单元.分布参数宽边耦合谐振单元耦合系数大,特别适合中宽带滤波器设计.文章根据滤波器指标要求,通过电路综合出滤波器的耦合系数及外部Q值.然后利用LTCC多层优势,实现宽边叠层耦合谐振单元的C波段滤波器.
C파단LTCC대통려파기적설계,유우기해진기채취집중LC원건,기Q치편저,차LTCC후막집중원건대소재C파단상대편대,위차재설계방면주요고필이용전수선결구적분포삼수해진단원.분포삼수관변우합해진단원우합계수대,특별괄합중관대려파기설계.문장근거려파기지표요구,통과전로종합출려파기적우합계수급외부Q치.연후이용LTCC다층우세,실현관변첩층우합해진단원적C파단려파기.
In the design of C band LTCC band-pass filter, since the resonator uses integrated IC and lumped elements use LTCC thick film, its Q value is low and size is relatively large in C band, so in the designing aspect, distribution parameters resonance unit with transmission line structure is the main consideration. Distributed parameter broadside coupled resonator unit, since its coupling coefficient is high, is particularly suitable to designing broadband filter. According to the requirements of filter, we synthesize the coupling coefficient and external Q value of filter through circuit and then realize C band filter with broadside coupled resonator unit using LTCC multilayer technology.