Omnidirectional Circularly Polarized Patch Antenna with Post Manufacture Characteristic Refinement

TitleOmnidirectional Circularly Polarized Patch Antenna with Post Manufacture Characteristic Refinement
Publication TypeConference Paper
Year of Publication2013
AuthorsNarbudowicz, A, Bao, XL, Ammann, MJ
Conference NameInternational Workshop on Antenna Technology - iWAT
Pagination31-34
Conference Start Date04/03/2013
Conference LocationKarlsruhe, Germany
Abstract

We propose an omnidirectional circularly polarised planar microstrip patch antenna, in which both impedance bandwidth and circular polarization properties can be adjusted after antenna manufacture. This is done by appropriately tuning four adjustable capacitors, incorporated into the patches. To demonstrate the properties, the proposed antenna is tuned to the GPS L1 band and then re-tuned for Beidou/Galileo E2 band by only changing capacitors values. Design guidelines for such retuning are provided.

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