A Small Printed Quadrifilar Helical Antenna for BGAN/GPS Applications
| Autor: | R. Kazemi |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: | |
| Zdroj: | Journal of Electrical and Computer Engineering Innovations, Vol 5, Iss 1, Pp 7-11 (2017) |
| Druh dokumentu: | article |
| ISSN: | 2322-3952 2345-3044 |
| DOI: | 10.22061/jecei.2017.623 |
| Popis: | This paper presents an element of a 2×2-element array antenna for Inmarsat BGAN/GPS applications. The element is an axial mode printed quadrifilar helical antenna that has been integrated with a compact feed network to provide sequential phase rotation for circular polarization (CP) radiation. The novel integrated lumped-element feed network is designed to provide a balanced RF power to the four helix arms with a 90° sequential phase difference between them. The design maintains a low cross polarization, and accordingly, a high quality of RHCP up to ±66° over the transmit frequency band of 1616 MHz to 1626 MHz. The gain in this frequency range is higher than 3.5 dB with a return loss better than 11 dB and a perfect circular polarization performance (axial ratio ~0 dB). The proposed antenna has small size, light weight, low cost, almost hemispherical radiation pattern and excellent circular polarization that can become a good candidate in satellite L1-band and BGAN satellite communications. |
| Databáze: | Directory of Open Access Journals |
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