電界検出装置、受信装置及びフィルタアンプ

Title:

電界検出装置、受信装置及びフィルタアンプ

Document Type and Number:

Japanese Patent JP4814014

Kind Code:

B2

Abstract:

To improve the gain of signal reception in human body communication.

A signal reception part 22 is composed of a frequency filter 221 connected to a reception electrode 21 placed under an AC electric field excited around a human body by transmission signals and two filter amplifiers 222 connected in multiple stages provided in the poststage of the frequency filter 221. Each filter amplifier 222 is constituted of a coil sensor 2,221 and an amplifier circuit 2,222 receiving an output of the coil sensor 2,221. The coil sensor 2,221 comprises a coil 312 provided with a core 311, a sensor electrode 313 fixed to the upper surface of the core 311, and a variable capacitor 315 for setting the resonance frequency of the coil sensor 2,221.

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Inventors:

Yasuo Kato

Application Number:

JP2006226487A

Publication Date:

November 09, 2011

Filing Date:

August 23, 2006

Export Citation:

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Assignee:

Kaiser Technology Co., Ltd.

International Classes:

H04B5/02; G01R29/08; H04B13/00

Domestic Patent References:

JP2006513001A
JP1126566A
JP61280127A
JP2004334432A

Foreign References:

WO2006085438A1

Attorney, Agent or Firm:

Katsushi Sato

Previous Patent: JPS4814013

Next Patent: コネクタ接続構造