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Patent Searching and Data


Title:
MATCHING CIRCUIT AND ANTENNA DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/208309
Kind Code:
A1
Abstract:
Provided is an on-board antenna device capable of reducing the difference between a maximum value and a minimum value of gain from the low-frequency range to the high-frequency range of a desired frequency band. The matching circuit 30 includes: a first matching circuit 31 connected to a power supply part of an antenna 10; and a second matching circuit 32 connected to the subsequent stage thereof. The first matching circuit 31 is configured with a shunt-connected capacitor or inductor and reduces the VSWR in the low-frequency range or high-frequency range of a frequency band. The second matching circuit 32 is configured with a series-connected inductor when the first matching circuit 31 is a capacitor.

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Inventors:
YOKOTA Yusuke (TOMIOKA PLANT, 1112, Kanohara, Tomioka-Sh, Gunma 95, 〒3702495, JP)
Application Number:
JP2019/016183
Publication Date:
October 31, 2019
Filing Date:
April 15, 2019
Export Citation:
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Assignee:
YOKOWO CO., LTD. (5-11, Takinogawa 7-Chome Kita-K, Tokyo 15, 〒1148515, JP)
International Classes:
H01Q1/50; H01Q1/22; H01Q1/32; H03H7/38; H04B1/18
Attorney, Agent or Firm:
SUZUKI Seigoh (4-5-10-10F, Shiba Minato-k, Tokyo 14, 〒1080014, JP)
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