Multiarms Multiports Externally Fed Spiral Antenna

Karim Louertani (1) , Régis Guinvarc'H (2) , Nicolas Ribière-Tharaud (1) , Marc Hélier (3)

1 L2S - Laboratoire des signaux et systèmes
2 SONDRA - Sondra, CentraleSupélec, Université Paris-Saclay (COmUE)
3 L2E - Laboratoire d'Electronique et Electromagnétisme

This letter deals with an externally fed spiral antenna. This design is a slot antenna that exhibits a behavior similar to that of the center-fed Archimedean spiral antenna with an improvement in terms of polarization. The antenna radiates a circular polarization over a wide frequency band within a wide angular range. Moreover, the polarization radiated can be right/left circular or linear vertical/horizontal. A prototype has been manufactured and compared to the modeled antenna. Good agreement is shown between measurement and simulation results.

Keywords: Antenna measurements; Antenna feeds; Polarization; Gain; Spirals

Domains: Electromagnetism

Karim Louertani, Régis Guinvarc'H, Nicolas Ribière-Tharaud, Marc Hélier. Multiarms Multiports Externally Fed Spiral Antenna. IEEE Antennas and Wireless Propagation Letters, 2012, 11, pp.236-239. ⟨10.1109/LAWP.2012.2188372⟩. ⟨hal-00693316⟩