应用于多波段的超高增益贴片天线设计

摘要

In order to expand antenna bandwidth as well as improve the gain at the same time, a microstrip patch antenna consisting of four rectangular structures was designed. The antenna has multitude bands and high gains. The antenna is working in 2.57-2.8 GHz, 4.47-4.7 GHz, 5.26-5.45 GHz, 6.1-6.2 GHz, 6.7-6.9 GHz bands with all of return losses less than –10 dB. This type of antenna is suitable for S, C, WiMAX(2.3-3.5 GHz), WiFi(5.25-5.35 GHz) bands. The antenna’s maximum gain is 9.45 dB, which is about 5 dB higher than that of traditional microstrip antenna.%为扩大带宽的同时提高增益，设计了一种由四个矩形组合构成的微带贴片天线，该天线达到了在多波段的情况下兼具超高增益的电特性。天线工作在2.57~2.8 GHz，4.47~4.7 GHz，5.26~5.45 GHz，6.1~6.2 GHz，6.7~6.9 GHz频带内，带内回波损耗均小于–10 dB，可应用于S波段、C波段、WiMAX(2.3~3.5 GHz)和WiFi(5.25~5.35 GHz)频段，最高增益达到9.45 dB，比传统微带天线增益高了约5 dB。