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A Small Printed Quadrifilar Helical Antenna for BGAN/GPS Applications | ||
Journal of Electrical and Computer Engineering Innovations (JECEI) | ||
مقاله 3، دوره 5، شماره 1 - شماره پیاپی 9، فروردین 2017، صفحه 7-11 اصل مقاله (1.67 M) | ||
نوع مقاله: Original Research Paper | ||
شناسه دیجیتال (DOI): 10.22061/jecei.2017.623 | ||
نویسنده | ||
R. Kazemi* | ||
Faculty of Electrical and Computer Engineering, University of Tabriz, Tabriz, 5166616471 Iran | ||
تاریخ دریافت: 31 خرداد 1396، تاریخ پذیرش: 31 خرداد 1396 | ||
چکیده | ||
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. | ||
کلیدواژهها | ||
BGAN؛ GPS؛ Printed quadrifilar helical Antenna؛ Lumped-element integrated feed network؛ Right-hand circular polarization | ||
مراجع | ||
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