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A Small Printed Quadrifilar Helical Antenna For Bgan/Gps Applications
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نویسنده
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Kazemi Robab
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منبع
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Journal Of Electrical And Computer Engineering Innovations - 2017 - دوره : 5 - شماره : 1 - صفحه:7 -11
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چکیده
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This paper presents an element of a 2×2element 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 lumpedelement 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 l1band and bgan satellite communications.
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کلیدواژه
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Bgan ,Gps ,Printed Quadrifilar Helical Antenna ,Lumpedelement Integrated Feed Network ,Right-Hand Circular Polarization
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آدرس
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University Of Tabriz, Faculty Of Electrical And Computer Engineering, ایران
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پست الکترونیکی
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r.kazemi@tabrizu.ac.ir
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Authors
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