Constrained Wire Curl Antenna Design for Minimum Axial Ratio

Conference: EuCAP 2009 - 3rd European Conference on Antennas and Propagation
03/23/2009 - 03/27/2009 at Berlin, Germany

Proceedings: EuCAP 2009

Pages: 4Language: englishTyp: PDF

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O'Kane, S. M.; Fusco, V. F. (The Institute of Electronics, Communications and Information Technology (ECIT), Queen’s University Belfast, Queen’s Road, Queen’s Island, Belfast, BT3 9DT, UK)

A method is presented which allows a wire curl antenna designed to be accurately scaled within the 1-20 GHz frequency range. The method is implemented such that for winding angles in the range 0.18-0.26 mm/rad geometrical dimensions that yield axial ratio <1 dB can be found within a restricted single parameter search space by varying the length of a 1.16 λ curl by only ± 0.044 λ. For validation, experimental comparison is made between two antennas, one at 2.4 GHz and the other at 11.85 GHz, scaled according to the method proposed.