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Patent Searching and Data


Title:
ANTENNA COUPLING ELEMENT, ANTENNA DEVICE, AND COMMUNICATION TERMINAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/208297
Kind Code:
A1
Abstract:
An antenna coupling element (20) comprising: a first coil (L1) connected to a first radiating element (11) and a feeder circuit (30); and a second coil (L2) which is connected to a second radiating element (12) and is electromagnetically coupled with the first coil (L1). The first coil (L1) and the second coil (L2) have a relationship such that the direction of a magnetic field generated in the first coil (L1) when a current flows from the first coil (L1) toward the first radiating element (11) is opposite to the direction of a magnetic field generated in the second coil (L2) when a current flows from the second coil (L2) toward the second radiating element (12). The first coil (L1) and the second coil (L2) set a resonance frequency of a fundamental wave of a second radiating element (12) including a transformer configured by the first coil (L1) and the second coil (L2) lower than a resonance frequency of a fundamental wave of the first radiating element (11).

Inventors:
NASU Takafumi (10-1, Higashikotari 1-chome, Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
Application Number:
JP2019/016120
Publication Date:
October 31, 2019
Filing Date:
April 15, 2019
Export Citation:
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Assignee:
MURATA MANUFACTURING CO., LTD. (10-1, Higashikotari 1-chome Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
International Classes:
H01Q5/378; H01F38/14; H01Q1/24; H01Q1/50; H01Q21/30
Domestic Patent References:
WO2012153690A12012-11-15
Foreign References:
JP5505581B12014-05-28
JP2012109875A2012-06-07
Attorney, Agent or Firm:
KAEDE PATENT ATTORNEYS' OFFICE (1-4-34, Noninbashi Chuo-ku, Osaka-sh, Osaka 11, 〒5400011, JP)
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