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In this letter, we present an improved Vivaldi antenna by using ultrathin microwave-absorbing materials (MAMs). The reverse currents at the outer side edges of the Vivaldi antenna always distort its radiation patterns and worsen its VSWR in some frequencies. To solve this problem, the ultrathin MAMs are loaded at the side edges of the antenna to absorb the energy of the current, and also to reduce...
Continuous Transverse Stub (CTS) planar array antenna was firstly invented in early 1990' [1]-[3]. The advantages of this type array include compact format, light weight, low loss and insensitivity to dimensional tolerances accuracy [2]. Besides, the present forms of CTS antenna have wide bandwidth, low dissipative losses compared with the conventional planar antennas. And it has been successfully...
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