ANTENNA DEVICE

• US 20170149141A1
• Filed: 11/16/2016
• Published: 05/25/2017
• Est. Priority Date: 11/19/2015
• Status: Active Grant

• Current Assignee: Ricoh Company Limited
• Original Assignee: Takashi Otsuki
• Inventors: OTSUKI, Takashi
• Granted Patent: US 10,396,463 B2
• Time in Patent Office: Days
• CPC Class Codes: H01Q 1/2291 used in bluetooth or WI-FI devices of Wireless Local Area Networks [WLAN] H01Q1/241 takes precedence; WLAN in general H04W
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H01Q 7/06 with core of ferromagnetic material H01Q7/02 takes precedence
• CPC Class Codes: H01Q 9/27 Spiral antennas
• CPC Class Codes: H04B 5/26 using coils
• CPC Class Codes: H04B 5/43 Antennas

Abstract

An antenna device is formed by winding a conductive wire around a magnetic member unit, and in which the magnetic member unit comprises a plurality of magnetic-member individual pieces.

Claims

1. An antenna device formed by winding a conductive wire around a magnetic member, wherein the magnetic member unit comprises a plurality of magnetic-member individual pieces.

2. The antenna device according to claim 1, wherein, in the magnetic member, the plurality of magnetic-member individual pieces are laid out equidistantly.

3. The antenna device according to claim 1, wherein, in the magnetic member, the plurality of magnetic-member individual pieces are laid out with no clearance left therebetween.

4. The antenna device according to claim 1, wherein, in the magnetic member, the plurality of magnetic-member individual pieces are made of sheet members.