Letestu Yoann. Broadband Folded Printed Quadrifilar Helical Antenna [Електронний ресурс] / Yoann Letestu, Ala Sharaiha // IEEE Transactions on Antennas and Propagation. – 2006. – № 5. – Pp. 1600–1604
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Статистика використання: Завантажень: 1
Складова документа:
IEEE Transactions on Antennas and Propagation. № 5. 54 / IEEE Antennas and Propagation Society // IEEE Transactions on Antennas and Propagation. – USA, 2006
Анотація:
The printed quadrifilar helical antenna (PQHA) represents a very attractive candidate for many applications such as mobile satellite communications,br oadcasting satellite systems or global positioning systems,due to hemispherical radiation, circular polarization,good axial
ratio,and low cost. Nevertheless,the bandwidth of a conventional PQHA could be insufficient for such applications. Therefore,in this paper, a technique for increasing the bandwidth of a PQHA by adding a shorted parasitic helix is presented. The new folded printed quadrifilar helical antenna (FPQHA) is designed to achieve 30% of bandwidth in axial-mode. Moreover, due to the printed arms on one substrate face, the FPQHA manufacturing is very simple. Measured results are presented to validate the concept.
ratio,and low cost. Nevertheless,the bandwidth of a conventional PQHA could be insufficient for such applications. Therefore,in this paper, a technique for increasing the bandwidth of a PQHA by adding a shorted parasitic helix is presented. The new folded printed quadrifilar helical antenna (FPQHA) is designed to achieve 30% of bandwidth in axial-mode. Moreover, due to the printed arms on one substrate face, the FPQHA manufacturing is very simple. Measured results are presented to validate the concept.