Title:
ANTENNA DEVICE AND MATCHING CIRCUIT
Document Type and Number:
Japanese Patent JP2019080187
Kind Code:
A
Abstract:
To provide an antenna device capable of achieving a high S/N characteristic of an amplifier in an AM wave band.SOLUTION: A matching circuit 10 is interposed between an antenna 1 for receiving a signal in an AM wave band and an amplifier 2 for amplifying a signal in an AM wave band. The matching circuit 10 is a circuit for matching an impedance of a feeding unit of the antenna 1 with an impedance of an input terminal of the amplifier 2 through a coil 11 wound with a conductor in a spiral manner. The conductor may be wound around a ferromagnetic material. A plurality of coils may be used.SELECTED DRAWING: Figure 1
Inventors:
GOTO MASAYUKI
MIZUNO HIROTOSHI
TERASHITA NORITAKA
MIZUNO HIROTOSHI
TERASHITA NORITAKA
Application Number:
JP2017206111A
Publication Date:
May 23, 2019
Filing Date:
October 25, 2017
Export Citation:
Assignee:
YOKOWO SEISAKUSHO KK
International Classes:
H01Q1/50; H01Q5/321; H03H7/38; H04B1/18
Attorney, Agent or Firm:
Masatake Suzuki