Title:
BROADBAND HELICAL ANTENNA AND DESIGN METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/073340
Kind Code:
A1
Abstract:
Embodiments of the present application disclose a broadband helical antenna and a design method therefor. The antenna comprises a hollow cylinder and a helical metal wire; an inner layer of the hollow cylinder is a metal ground, and an outer layer of the hollow cylinder is a magnetic material, the helical metal wire is wound on the outside of the magnetic material, the helical metal wire is further provided with a feeding point and a short-circuit point, and the short-circuit point is used to connect the helical metal wire and the metal ground. The broadband helical antenna provided in the embodiments of the present application is added with a short-circuit point to connect the helical metal wire and the metal ground, and current distribution can be changed to form a new current path to constitute a new radiation oscillator, so that a plurality of resonance modes are excited in a 10-80 MHz frequency band to form a multi-band and broadband antenna having a wide bandwidth. The antenna provided in the embodiments of the present application further comprises a radio frequency switch, which is used to adjust the disconnection or connection state of a short-circuit metal sheet and the disconnection or connection state of a helical metal wire, so as to adjust a resonant frequency.
More Like This:
| JP5115587 | Mobile wireless terminal |
| WO/2012/050704 | MULTIBAND ANTENNA FOR A MOBILE DEVICE |
| JPH07122921 | WINDOW GLASS ANTENNA FOR AUTOMOBILE |
Inventors:
ZONG WEIHUA (CN)
LIU LULU (CN)
LI HONGFEI (CN)
WANG JIANQING (CN)
LI SHANDONG (CN)
LIU LULU (CN)
LI HONGFEI (CN)
WANG JIANQING (CN)
LI SHANDONG (CN)
Application Number:
PCT/CN2020/115528
Publication Date:
April 22, 2021
Filing Date:
September 16, 2020
Export Citation:
Assignee:
UNIV QINGDAO (CN)
International Classes:
H01Q1/48; H01Q1/36
Foreign References:
| CN110797637A | 2020-02-14 | |||
| CN202797288U | 2013-03-13 | |||
| CN108778170A | 2018-11-09 | |||
| JP2009044331A | 2009-02-26 |
Other References:
ZONG WEI-HUA; LI HONG-FEI; HAN YU; YANG ZHIQUN; QU XIAOYUN; LI SHANDONG: "A Dual-Band Helix Antenna Operating at HBC Band", 2020 IEEE INTERNATIONAL CONFERENCE ON COMPUTATIONAL ELECTROMAGNETICS (ICCEM), IEEE, 24 August 2020 (2020-08-24), pages 160 - 161, XP033839297, DOI: 10.1109/ICCEM47450.2020.9219329
WANG, JIAN QING ET AL.: "An In-Body Impulse Radio Transceiver With Implant Antenna Miniaturization at 30 MHz", 《IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS》, vol. 25, no. 7, 31 July 2015 (2015-07-31), XP011662395, DOI: 10.1109/LMWC.2015.2429112
WANG, JIAN QING ET AL.: "An In-Body Impulse Radio Transceiver With Implant Antenna Miniaturization at 30 MHz", 《IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS》, vol. 25, no. 7, 31 July 2015 (2015-07-31), XP011662395, DOI: 10.1109/LMWC.2015.2429112
Attorney, Agent or Firm:
HEFEI CHENCHUANG INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)
Download PDF: