Title:
誘電体装荷アンテナ
Document Type and Number:
Japanese Patent JP2012520594
Kind Code:
A
Abstract:
A dual-band dielectrically loaded multifilar antenna has a first group of helical conductive antenna elements extending from feed connection nodes to an annular linking conductor 20U, and a second group of conductive helical antenna elements extending from the feed coupling nodes in the direction of the linking conductor to substantially open-circuit ends spaced from the linking conductor. The helical elements of the first group are half-turn elements having an electrical length of approximately one half wavelength at a first operating frequency of the antenna. The helical elements of the second group are approximately quarter-turn helical elements having an electrical length in the region of one quarter wavelength and a second operating frequency of the antenna. Each group of elements is associated with a respective mode of resonance for circularly polarized radiation.
More Like This:
| WO/2015/050780 | COIL ANTENNA WITH PLURAL RADIAL LOBES |
| JP6534634 | Tire condition detector |
| WO/2000/008711 | ANTENNA WITH A LARGE BANDWIDTH |
Inventors:
Raison, Oliver Paul
Application Number:
JP2011553505A
Publication Date:
September 06, 2012
Filing Date:
March 09, 2010
Export Citation:
Assignee:
Sarantelle Limited
International Classes:
H01Q11/08; H01Q1/38; H01Q21/30
Domestic Patent References:
| JPH1013148A | 1998-01-16 | |||
| JPH11509076A | 1999-08-03 |
Foreign References:
| WO2008084205A1 | 2008-07-17 |
Attorney, Agent or Firm:
Yoshiyuki Kawaguchi
Hidemi Matsukura
Takehiko Sekine
Katsuhiko Imahori
Hidemi Matsukura
Takehiko Sekine
Katsuhiko Imahori