Design of circularly polarized and electrically small antenna with omnidirectional radiation pattern
| dc.contributor.author | Lertsakwimarn, Kittima | |
| dc.contributor.author | Phongcharoenpanich, Chuwong | |
| dc.contributor.author | Fukusako, Takeshi | |
| dc.date.accessioned | 2026-08-06T10:10:12Z | |
| dc.date.available | 2026-08-06T10:10:12Z | |
| dc.date.issued | 2014-12-01 | |
| dc.description.abstract | This paper presents an electrically small and circularly polarized antenna with an omnidirectional radiation pattern. The antenna consists of a horizontal loop element enclosed by two U-shaped elements and a vertical element from the feeding point. The radiation pattern of the circular polarization is omnidirectional and has a maximum gain of -2 dBic in parallel to the ground plane at the 900 MHz band. The antenna dimensions are 48 × 20 × 13.8mm (0.14 λ × 0.06 λ × 0.04 λ) with ka = 0.476 (i.e. < 0.5), where k is the wavenumber at the resonant frequency and a is the radius of a sphere surrounding the antenna. The dimension corresponds to the definition of an electrically small antenna. The omnidirectional circularly polarized pattern of a prototype antenna shows good agreement with that of the simulation. In addition, this paper introduces a mechanism that generates omnidirectional circular polarization from electrically small antennas. | |
| dc.identifier.citation | IEICE Transactions on Communications, E97B(12), 2739-2746, 2014 | |
| dc.identifier.doi | 10.1587/transcom.E97.B.2739 | |
| dc.identifier.issn | 09168516 | |
| dc.identifier.other | 2-s2.0-84924409159 | |
| dc.identifier.uri | https://dspace.kmitl.ac.th/handle/123456789/5874 | |
| dc.source | IEICE Transactions on Communications | |
| dc.subject | Circular polarization | |
| dc.subject | Electrically small antenna | |
| dc.subject | Omnidirectional radiation pattern | |
| dc.title | Design of circularly polarized and electrically small antenna with omnidirectional radiation pattern | |
| dc.type | Article |