带有辐射增强结构的直线渐变微带缝隙天线  

Tapered slot line antennas with enhanced radiation structure

作　　者：关福宏[1] 孙晓玮[1] 

机构地区：[1]中国科学院上海微系统与信息技术研究所,上海200050

出　　处：《电波科学学报》2010年第4期684-688,共5页Chinese Journal of Radio Science

基　　金：国家973项目(NO.2009CB320207);国家自然科学基金项目(NO.60771058)

摘　　要：运用在天线辐射开口处加印刷偶极子的结构优化天线的辐射特性,采用皱褶边缘结构去除有限地平面的影响,设计出一种适用于毫米波阵列成像系统的宽频带窄边直线渐变式微带缝隙天线。天线长度36mm,总宽度10mm,边缘宽度仅为2.5mm。天线的中心频率35GHz。测试结果表明:在30～40GHz频带范围内该天线具有对称的波束和平坦的增益,平均增益约为12dB,回波损耗小于-10dB。该天线已应用于集成毫米波辐射计馈源。A narrow edges,wide-band,Ka-band planar tapered slot line（TSL）antenna aiming at feed arrays for millimeters wave（MMW） imaging radiometer system is proposed. Dipole in the slot structure is added to optimize the radiation characteristics and corrugated edges structure is used to offset the degraded radiation patterns of reduced size of the TSL antenna. The TSL antenna has a length of 36 mm, a width of 10 mm and the edge width only 2.5 mm. The central working frequency is 35 GHz. Measured results show the antenna has symmetrical far fie radiation patten, stable gain with an average 12 dB and possesses a wide bandwidth of 30-40 GHz for the return loss less than -10 dB in 10 GHz frequency range. The proposed antenna has been used for the feed antenna in an integrated MMW radiometer.

关 键 词：直线渐变缝隙天线 宽频带 

分 类 号：TN821[电子电信—信息与通信工程]