A Self-Complementary 1.2 to 40 GHz Spiral Antenna with Impedance Matching
Abstract
This paper describes a design of the Self- Complementary Spiral Antenna (SCSA) which consists of a spiral antenna and a wideband impedance transformer. The spiral antenna and the transformer are designed separately due to computing demands. New knowledge about current distribution on the spiral antenna and influence of higher numbers of wavelength in circumference is presented. The novel transition between feeding and radiating antenna structure are optimized in the frequency range 1.2 to 40 GHz. The meaning of the transition in the paper includes the impedance as well as the geometry transforming of the structure. The antenna is suitable for wideband illuminating of a parabolic reflector due to relatively constant phase center and radiation pattern with frequency.
Keywords
Spiral antenna, ultra wide-band, UWB, circular polarization, planar, self-complementary structure, current distribution, transition, impedance transformer, impedance matching, s-parameters renormalizingPersistent identifier
http://hdl.handle.net/11012/57958Document type
Peer reviewedDocument version
Final PDFSource
Radioengineering. 2006, vol. 15, č. 3, s. 15-19. ISSN 1210-2512http://www.radioeng.cz/fulltexts/2006/06_03_15_19.pdf
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- 2006/3 [10]
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