作者: B. Pan , R.L. Li , J. Papapolymerou , J. Laskar , M.M. Tentzeris
关键词:
摘要: A cavity-backed loop antenna with a simple feeding structure is proposed for broadband circularly polarized (CP) radiation. The configuration consists of slot and strip loop. radiates CP wave at lower frequency while the produces radiation higher frequency. combination two frequencies leads to bandwidth enhancement. slot/strip fed by single straight microstrip line. It demonstrated that can achieve an axial ratio (/spl les/3 dB) 20% good impedance matching.