Low profile cavity-backed four-arm Archimedean spiral antenna with 8:1 bandwidth - EMG - Département Electromagnétisme Accéder directement au contenu
Communication Dans Un Congrès Année : 2014

Low profile cavity-backed four-arm Archimedean spiral antenna with 8:1 bandwidth

Résumé

A wideband circularly polarized, four-arm Archimedean spiral antenna backed by a low-profile metallic cavity of 15 mm (0.03λ at the lowest frequency) with a 8:1 bandwidth from 0.6 GHz to 5 GHz is presented. A feed network comprising of a 90° wideband hybrid connected to two 180° hybrids excites the spiral antenna in the fundamental mode. For the entire 8:1 bandwidth, the measured input return loss of the system is more than 11.4 dB. Despite the low-profile cavity, the measured boresight gain and axial ratio of the antenna is -1 to 8.7 dBi and less than 2 dB respectively
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Dates et versions

hal-01104549 , version 1 (17-01-2015)

Identifiants

Citer

Hongzhao Ray Fang, Mohammed Serhir, Ramanan Balakrishnan, Régis Guinvarc'H, Koenraad Mouthaan. Low profile cavity-backed four-arm Archimedean spiral antenna with 8:1 bandwidth. 8th European Conference on Antennas and Propagation (EuCAP 2014) , IEEE, Apr 2014, The Hague, Netherlands. pp.2528 - 2531, ⟨10.1109/EuCAP.2014.6902333⟩. ⟨hal-01104549⟩
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