【作者】 李光润； 陈董； 程崇虎；

【Author】 Guangrun Li;Dong Chen;Chonghu Cheng;School of Electric Science and Engineering, Nanjing University of Posts and Telecommunications;

【机构】 电子科学与工程学院南京邮电大学；

【摘要】 本文设计了一种双频微带滤波天线,该滤波天线包括一个带45°切角的方形贴片和一个T形微带双模谐振器,该双频滤波天线具有两个通带,每个通带由两个模式构成,每个通带中的一个模式由方形贴片提供,另外一个模式则由T形微带谐振器提供。通过控制方形贴片的切角尺寸可以使原本谐振频率相同的两个简并模式分离,并使其分别谐振于设计的通带频率处;同样的,通过调节T形微带谐振器开路枝节线的长度,可以调节两个谐振模式谐振频率,使其与方形贴片的两个谐振频率共同构成两个通带,因此该滤波天线可以灵活调节通带频率和带宽,实测数据与仿真结果吻合较好。更多还原

【Abstract】 A dual-band microstrip filtering antenna is proposed in this paper. The antenna consists of a square patch with 45 o corner cut and a T-shape microstrip dual-mode resonator. This dual-band antenna is composed of a couple of passband which are formed by two resonant modes in each passband. Each passband is build up by two resonant modes, one is formed by the square patch and the other is formed by the T-shape microstrip resonator. By tuning the size of the corner cut of the square patch, the resonant frequencies of the two degenerated modes can be split and relocated within the desired passband. Meanwhile, the two resonant frequencies of the T-shape microstrip resonator can also be adjusted by changing the length of the open-circuited stub and utilized to construct the passband together with those of square patch. Therefore, the center frequency and bandwidth of each passband can be controlled independently. The measurement agree well with the simulated results.更多还原