【作者】 李婉清； 于伟华； 王学田；

【Author】 Wanqing Li;Weihua Yu;Xuetian Wang;School of Integrated Circuits and Electronics, Beijing Institute of Technology;

【机构】 北京理工大学集成电路与电子学院；

【摘要】 本文设计了一款基于基片集成波导的微带串馈滤波天线。该天线通过在微带串馈天线底部加缝隙结构,使天线的能量向第二层介质板辐射,通过在第二层介质板中加入SIW结构,形成特定频率的谐振,为天线增加一个新的谐振点,同时,增益曲线产生新的辐射零点,增益在工作频率边缘下降速度更快,带外下降沿更陡峭。使用HFSS对天线模型进行仿真分析,天线通带为34.95GHz-35.42GHz,平均增益大于15.5dBi,两侧带外增益抑制水平可达26.8dB。实现了滤波功能的频率响应,提高了天线的频率选择性和抗边带干扰性能。更多还原

【Abstract】 This paper designs a microstrip series-fed filter antenna based on substrate integrated waveguide. By adding a slot structure at the bottom of the microstrip series-fed antenna, the antenna’s energy radiates to the second dielectric layer. By incorporating a SIW structure in the second dielectric layer, a specific frequency resonance is formed, adding a new resonance point to the antenna. Meanwhile, the gain curve generates a new radiation null, and the gain drops more rapidly at the edge of the operating frequency, with a steeper out-of-band roll-off. The antenna model is simulated and analyzed using HFSS. The antenna passband is 34.95 GHz-35.42 GHz,with an average gain greater than 15.5 dBi. The out-of-band gain suppression level on both sides can reach 26.8 dB. The frequency response of the filtering function is achieved, improving the antenna’s frequency selectivity and anti-sideband interference performance.更多还原