Circularly polarized broadband high-efficiency active integrated antenna

S. Gao, Y. Qin, A. Sambell

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


This letter presents a circularly polarized (CP) broadband high-efficiency active integrated antenna, where the broadband CP antenna is integrated directly with a broadband high-efficiency class-E power amplifier (PA). To achieve CP operation, a series feed using an L-shaped microstrip feed line below the ground plane is used to provide a 90° phase shift between crossed slots. The antenna serves both functions of a broadband CP radiator and a broadband harmonics-termination load network for the class-E PA. Measures results demonstrate both broadband CP radiation and high efficiency.

Original languageEnglish
Pages (from-to)2145-2148
Number of pages4
JournalMicrowave and Optical Technology Letters
Issue number11
Early online date29 Aug 2006
Publication statusPublished - 1 Nov 2006
Externally publishedYes

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