提出了一种基于复合左右手共面波导的双边辐射漏波天线.通过对该天线单元散射图表的分析,确认单元结构为平衡结构.由于单元结构的左手特性,该漏波天线可以实现后向波辐射;同时,在平衡状态下,该漏波天线消除了平衡点附近的阻带效应,使得在平衡点处群速不为0,有行波传播,因而可以产生横向辐射.测试结果表明该天线可以实现从后向到前向的连续辐射.
Proposed in this paper is a double-side radiating leaky-wave antenna based on composite right/left-handed(CRLH) coplanar waveguide(CPW).By analyzing the dispersion diagram of the antenna unit,a balanced property is confirmed.The designed antenna can implement backfire radiation due to the left-handed property of the CRLH structure,and,in balanced cases,the gap between left-handed and right-handed regions can be su-ppressed.Consequently,a traveling wave along the structure occurs and the antenna implements transverse radiation at the balance point with non-zero group velocity.Measured results show that the proposed antenna can offer continuous radiation almost covering backfire-to-endfire directions.