A Miniature Quadrifilar Helix Antenna for Global Positioning Satellite Reception
| dc.citation.epage | 3751 | en_US |
| dc.citation.issue | 12 | en_US |
| dc.citation.spage | 3746 | en_US |
| dc.citation.volume | 57 | en_US |
| dc.citation.woscount | 14 | |
| dc.contributor.author | Wang, Yu-Shin | en_US |
| dc.contributor.author | Chung, Shyh-Jong | en_US |
| dc.contributor.department | 電信工程研究所 | zh_TW |
| dc.contributor.department | Institute of Communications Engineering | en_US |
| dc.date.accessioned | 2014-12-08T15:08:05Z | |
| dc.date.available | 2014-12-08T15:08:05Z | |
| dc.date.issued | 2009-12-01 | en_US |
| dc.description.abstract | The design is described of a very compact quadrifilar helix antenna. A hollow ceramic rod is used as a dielectric load to reduce antenna size, which is only 2.7% of an air-loaded quadrifilar helix antenna. A simple equivalent circuit is established for the proposed quadrifilar helix antenna to demonstrate impedance characteristics. A self-phasing method for achieving circular polarization is also proposed. This method is convenient for tuning circular polarization. Additionally, a compact matching structure is designed to match the proposed antenna, which only utilizes short transmission-line sections and one capacitor. For experiments, the proposed antenna is designed at 1.575 GHz such that it can be utilized for global position system. Measurement and simulation results agree. A hemispherical pattern with a beamwidth of 150 is measured. This circular-polarized pattern with a wide beamwidth is feasible for mobile applications. | en_US |
| dc.identifier.doi | 10.1109/TAP.2009.2024132 | en_US |
| dc.identifier.issn | 0018-926X | en_US |
| dc.identifier.journal | IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | en_US |
| dc.identifier.uri | http://dx.doi.org/10.1109/TAP.2009.2024132 | en_US |
| dc.identifier.uri | https://ir.lib.nycu.edu.tw/handle/11536/6336 | |
| dc.identifier.wosnumber | WOS:000272313500010 | |
| dc.language.iso | en_US | en_US |
| dc.subject | Circular polarization | en_US |
| dc.subject | GPS | en_US |
| dc.subject | quadrifilar helix antenna (QHA) | en_US |
| dc.subject | self phasing | en_US |
| dc.title | A Miniature Quadrifilar Helix Antenna for Global Positioning Satellite Reception | en_US |
| dc.type | Article | en_US |