【作者】 乔大育； 王均宏；

【Author】 Dayu Qiao;Junhong Wang;Beijing Jiaotong University;

【机构】 北京交通大学；

【摘要】 本文提出了一种抑制开阻带的SIW周期缝隙漏波天线。该漏波天线的单元结构是由三条横缝和一个对称纵缝构成的双"H"形缝隙,通过该单元产生的反射能量在法向辐射频率处抵消,从而实现开阻带的抑制。将17个漏波单元级联构成漏波天线,该天线的-10 dB阻抗带宽为25.3%(28.7～37 GHz),主波束的扫描范围为79°(-48°到31°),天线在边射频率33.3 GHz处的实际增益为13.9 dBi,无明显衰减。天线的辐射效率和总效率分别在40%和30%以上。更多还原

【Abstract】 A substrate-integrated waveguide periodic slot leaky-wave antenna with suppressed open-stop band is proposed in this paper.The unit cell of this LWA is composed of a double-H-shaped slot structure formed by three transverse slots and one centered longitudinal slot.The reflection energy generated by the unit is canceled at the broadside radiation frequency,thus achieving open-stopband suppression.The leaky-wave antenna is constructed by cascading 17 unit cells.The-10 dB impedance bandwidth is 25.3%(28.7～37 GHz),and the main beam is scanned over a range of 79°(from-48° to 31°).The Realized gain is 13.9 dBi at the broadside frequency of 33.3 GHz without significant degradation.Both the radiation efficiency and total efficiency are maintained above 40 %and 30 %,respectively.更多还原