Feeding Structure of Housing With Antenna

• US 20100156750A1
• Filed: 02/19/2007
• Published: 06/24/2010
• Est. Priority Date: 02/19/2006
• Status: Abandoned Application

• Current Assignee: Nissha Printing Company Limited (Nissha Co., Ltd.)
• Original Assignee: Nissha Printing Company Limited (Nissha Co., Ltd.)
• Inventors: Okumura, Shuzo, Ishibashi, Tatsuo
• Application Number:
  US12/223,989
• Publication Number:
  US 20100156750A1
• Time in Patent Office: Days
• US Class Current: 343/873
• CPC Class Codes: H01Q 1/40 Radiating elements coated with or embedded in protective material
• CPC Class Codes: H01Q 1/44 using equipment having another main function to serve additionally as an antenna , e.g. means for giving an antenna an aesthetic aspectH01Q1/27 - H01Q1/34 take precedence
• CPC Class Codes: H01Q 9/27 Spiral antennas

Abstract

A feeding structure of a housing with an antenna, in which a flat antenna can be attached inconspicuously to the outer surface of the housing which is hard to be affected by a metal component and power can be supplied to the flat antenna without providing a through hole causing inferior appearance. The feeding structure of the housing with an antenna comprises a housing 2, a decorative film 3 covering at least a part of the outer wall face of the housing 2, a flat antenna 6 held between the outer wall face of the housing 2 and the decorative film 3, and an electrode 7 provided on the inner wall face of the housing 2. In the feeding structure, a capacitor is formed by arranging a feeding part 6a of the flat antenna 6 and the electrode 7 opposite to each other in both faces of the housing 2 and power transmission and communication are performed in a noncontact manner for the flat antenna 6 on the outside of the housing 2 from the inside of the housing 2 by connecting an inductor 8 with the electrode 7.

Claims

1. A feeding structure of a housing with an antenna comprising a housing, a decorative film covering at least a part of the outer wall face of the housing, a flat antenna held between the outer wall face of the housing and the decorative film, and an electrode provided on the inner wall face of the housing, wherein

a capacitor is formed by arranging a feeding part of the flat antenna and the electrode opposite to each other in both faces of the housing and transmission of power and a signal are performed in a noncontact manner for the flat antenna by connecting an inductor to the electrode.

2. The feeding structure of the housing with an antenna according to claim 1, wherein

the decorative film is a laminated film having a decorative layer capable of concealing the flat antenna on at least one side of a transparent resin film, or a monolayer film containing a coloring agent capable of concealing the flat antenna in the transparent resin film.

3. The feeding structure of the housing with an antenna according to claim 1, wherein

the thickness of the housing held between the feeding part and the electrode is 1 mm or less.

4. The feeding structure of the housing with an antenna according to claim 3, wherein

the inductance of the inductor is 1 mH or less.

5. The feeding structure of the housing with an antenna according to claim 1, wherein

the electrode is provided in a recessed part formed in the inner wall face of the housing.

6. The feeding structure of the housing with an antenna according to claim 1, wherein

the flat antenna and the housing are integrated by insert molding.

7-13. -13. (canceled)