Radio apparatus including no less than two housings

• US 7,796,402 B2
• Filed: 10/30/2007
• Issued: 09/14/2010
• Est. Priority Date: 12/27/2006
• Status: Expired due to Fees

• Current Assignee: Toshiba Client Solutions CO., Ltd. (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Ohba, Isao, Mizoguchi, Satoshi
• Primary Examiner(s): Bui; Hung S
• Application Number:
  US11/978,904
• Publication Number:
  US 20080158847A1
• Time in Patent Office: 1,050 Days
• Field of Search: 361/800, 361/816, 361/818, 361/814, 174/51, 174/35.R, 343/787, 343/702, 343/835
• US Class Current: 361/814
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H01Q 9/40 Element having extended radiating surface
• CPC Class Codes: H01Q 9/42 with folded element, the folded parts being spaced apart a small fraction of the operating wavelength
• CPC Class Codes: H04M 1/0214 Foldable telephones, i.e. with body parts pivoting to an open position around an axis parallel to the plane they define in closed position combined with translation movement H04M1/0235

Abstract

A radio apparatus includes a first housing containing a first printed circuit board, second housing containing a second printed circuit board and being connected so as to be opened and closed to the first housing, an unbalanced-fed type antenna configured to be fed from one of the first printed circuit board and the second printed circuit board, and a magnetic material layer arranged to be located between the first printed circuit board and the second printed circuit board if the second housing is closed to the first housing.

Claims

1. A radio apparatus, comprising:

a first housing containing a first printed circuit board;

a second housing containing a second printed circuit board, the second housing being connected to the first housing so as to be openable and closeable with respect to the first housing;

an unbalanced-fed type antenna configured to be fed from one of the first printed circuit board and the second printed circuit board; and

a magnetic material layer arranged to be located between the first printed circuit board and the second printed circuit board if the second housing is closed with respect to the first housing, wherein only a single layer of the magnetic material layer is provided in the first housing or the second housing.

2. The radio apparatus of claim 1, wherein the magnetic material layer is arranged on a face of the second printed circuit board, the face being opposite the first housing if the second housing is closed with respect to the first housing.

3. The radio apparatus of claim 1, wherein the magnetic material layer is arranged on a fringe portion of a face of the second printed circuit board, the face being opposite the first housing if the second housing is closed with respect to the first housing.

4. The radio apparatus of claim 3, wherein the magnetic material layer has a width no less than six thousandth wavelength of a frequency of use.

5. The radio apparatus of claim 1, wherein the magnetic material layer is arranged on a portion along a short side of a face of the second printed circuit board, the face being opposite the first housing if the second housing is closed with respect to the first housing.

6. The radio apparatus of claim 1, wherein the first housing and the second housing are connected so as to be folded to each other.

7. The radio apparatus of claim 1, wherein the first housing and the second housing are connected so as to slide against each other.

8. The radio apparatus of claim 1, wherein the first housing and the second housing are connected so as to rotate around two axes which are perpendicular to each other.