CAJ | 학술논문

提出了一种紧凑的零度馈电的具有分支线加载的具有3个传输零点的微带双带通滤波器。首先完成了中心频率2．4 GHz的微带单带通滤波器设计，再次完成了加载分支线的优化仿真设计，最终实现了2．4/3．5 GHz微带双通带滤波器，实测和仿真结果吻合较好，实测得到了的第一、二通带相对带宽大于5％，第一通带内插损小于1．5 dB，第二通带内插损小于3 dB。提出的分支加载的微带双带通滤波器具有设计简单、结构紧凑、很好的选择性等优点，可以满足无线局域网（WLAN）系统和固定无线接入（FWA）通信需要。
제출료일충긴주적령도궤전적구유분지선가재적구유3개전수영점적미대쌍대통려파기。수선완성료중심빈솔2．4 GHz적미대단대통려파기설계，재차완성료가재분지선적우화방진설계，최종실현료2．4/3．5 GHz미대쌍통대려파기，실측화방진결과문합교호，실측득도료적제일、이통대상대대관대우5％，제일통대내삽손소우1．5 dB，제이통대내삽손소우3 dB。제출적분지가재적미대쌍대통려파기구유설계간단、결구긴주、흔호적선택성등우점，가이만족무선국역망（WLAN）계통화고정무선접입（FWA）통신수요。
A compact microstrip dual -band passband filter with three transmission zeros using open stub-loaded resonator and 0-degree feed structure was presented .First, the design of the 2.4 GHz pass-band filter was completed .Second , the optimization simulation loading the branch line is completed too . Finnally , the 2 .4/3 .5 GHz dual-band microstrip passband filter was fabricated .The measured results of the filter was in good agreement with the simulation .The fractional frequency bandwidths of the measured dual passbands are greater than 5%.The insertion loss of the low -band is below 1.5 dB.The insertion loss of the high-band is below 3 dB.So the proposed dual -band microstrip passband filter based on Stub-Loaded Resonators not only has high selectivity , but also is compact in size , and easy to design and realize .It can meet the 2 .4 GHz and 3 .5 GHz wireless communication requirements such as short -range wireless communication in WLAN and FWA application .