Printed quadrifilar helix antenna with enhanced bandwidth
نویسندگان
چکیده
منابع مشابه
L-Band Compact Printed Quadrifilar Helix Antenna with ‘Iso-Flux’ Radiating Pattern for Stratospheric Balloons Telemetry
Quadrifilar helix antennas have very interesting characteristics. For instance, by selecting properly the height and number of turns of the helix, one can achieve a radiation pattern of so-called ‘iso-flux’ shape with high gain at low elevation. Such a pattern enables to improve the link budget for stratospheric balloons telemetry as the gain of the antenna compensate for the free space propaga...
متن کاملA Small Printed Quadrifilar Helical Antenna for BGAN/GPS Applications
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 fou...
متن کاملDesign and Implementation of a Quadrifilar Helix Antenna Operating at 0.94GHz
A quadrifilar helix antenna (QHA) operating at 0.94GHz is designed and realized in this paper. The designed QHA consists of four helical conductors which are excited in phase quadrature by employing a Wilkinson divider which shows good performance in return loss and transmission characteristic. According to the designed parameters of the helices and Wilkinson divider, a QHA is fabricated and me...
متن کاملA Folded Printed Quadrifilar Helical Antenna Employing a Compact Feeding Network
Abstract—A folded printed quadrifilar helical antenna (FPQHA) with an integrated and compact feeding network is proposed. The axial length of the proposed antenna is miniaturized of about 54.7% than the conventional PQHA by folding the helix arms into several elements. A T-junction power divider combining with two Wilkinson power dividers is utilized to feed the antenna. A fabricated prototype ...
متن کاملTHE INTELLIGENT QUADRIFILAR HELIX: A COMPACT MIMO ANTENNA FOR IEEE 802.11n
A compact MIMO antenna solution, the intelligent quadrifilar helix antenna for the IEEE 802.11n standard is proposed. Analysis has been made with regard to design considerations and preliminary narrowband measurements have been carried out to evaluate its capacity potential in comparison to conventional spatially separated linear antennas. The results indicate that there is comparable capacity ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IET Microwaves, Antennas & Propagation
سال: 2017
ISSN: 1751-8733,1751-8733
DOI: 10.1049/iet-map.2016.0812