Mobile wireless terminal

• US 7,386,281 B2
• Filed: 05/23/2003
• Issued: 06/10/2008
• Est. Priority Date: 05/28/2002
• Status: Expired due to Fees

• Current Assignee: Lenovo Innovations Ltd Hong Kong (Lenovo Group Ltd.)
• Original Assignee: NEC Corporation
• Inventors: Harano, Nobuya
• Primary Examiner(s): Milord; Marceau
• Application Number:
  US10/444,135
• Publication Number:
  US 20030224738A1
• Time in Patent Office: 1,845 Days
• Field of Search: 455/575.1, 455/575.5, 455/90.3, 455/575.8, 343/895, 343/702, 343/901
• US Class Current: 455/90.3
• CPC Class Codes: H01Q 1/244 extendable from a housing along a given path
• CPC Class Codes: H01Q 1/245 with means for shaping the antenna pattern, e.g. in order to protect user against rf exposure
• CPC Class Codes: H04B 1/3838 Arrangements for reducing RF exposure to the user, e.g. by changing the shape of the transceiver while in use

Abstract

There is provided a mobile wireless terminal permitting the distance between the antenna and the human head can be kept relatively constant even if the angle formed by the case of the apparatus is varied, making it possible to ensure stable antenna performance.

A mobile wireless terminal according to the invention is fitted to an upper case and has an antenna extensible from the upper case and, when that antenna is stowed in the upper case 1, the upper end of the upper case protrudes farther than the position of an ½ length of a coil section, which is the tip section of an antenna element positioned at the tip section of the antenna.

Claims

1. A mobile wireless terminal apparatus comprising:

a case having an inner face, a back surface spaced apart from the inner face, and a top end surface extending between a top of the inner face and a top of the back surface, the top end surface having an antenna mount surface and an antenna protection surface; and

an antenna coil having a coil base, a coil distal end spaced a length D above the coil base in an extension direction, the coil having a coil center located D/2 in the extension direction above the coil base, at least a portion of coil arranged above an area of the antenna mount surface,

wherein the antenna coil and the antenna protection surface are arranged such that the antenna protection surface protrudes above the coil center in the extending direction.

2. The mobile wireless of terminal of claim 1, wherein an area of the antenna protection surface adjoining the top surface of the inner face forms a contact surface for contacting a human head proximal to an ear while rotating the case, with the contact surface being the center of the rotation, from a position where the inner face contacts with the human head proximal to a cheek to a position where the inner face is spaced away from the cheek, during a normal operation of the mobile wireless terminal.

3. The mobile wireless terminal of claim 2, wherein the extending direction forms an angle with respect to the inner face so as to extend, in part, away from a human head during a normal operation of the mobile wireless terminal.

4. The mobile wireless terminal of claim 2,

wherein the case includes first case and a second case connected to an end of the first case opposite the top end surface,

wherein the first case has structure forming the inner face, the back surface and the top end surface having the antenna mount surface and the antenna protection surface, and

wherein the first case and the second case are manually movable, about the hinge, between a folded position and an open position.

5. The mobile wireless terminal of claim 2, wherein the case forms an interior, further comprising a receiver unit arranged within the interior and connected to the antenna.

6. The mobile wireless terminal of claim 1, further comprising an antenna shaft connected to the antenna coil and extending through an area of the antenna mount surface of the case, wherein the antenna shaft is extendable from a stowed position to an extended position, and wherein the coil center is below the antenna protection surface, in the extending direction, when the antenna is in the stowed position and above the antenna protection surface in the extending direction when the antenna is in the extended position.

7. The mobile wireless terminal of claim 6,

wherein the case includes first case and a second case connected to an end of the first case opposite the top end surface,

wherein the first case has structure forming the inner face, the back surface and the top end surface having the antenna mount surface and the antenna protection surface, and

wherein the first case and the second case are manually movable, about the hinge, between a folded position and an open position.

8. The mobile wireless terminal of claim 6, wherein the antenna mount surface of the top end of the case includes a recess, and wherein the antenna coil and the recess are arrange wherein a portion of the coil is within the recess when the antenna is in the stowed position.

9. The mobile wireless terminal of claim 8, wherein the antenna and the recess are structured such that extending the antenna to the extended position spaces the base of the coil above the recess, in the extending direction.

10. The mobile wireless terminal of claim 6, wherein the case forms an interior, further comprising a receiver unit arranged within the interior and connected to the antenna.

11. The mobile wireless terminal of claim 1,

wherein the case includes first case and a second case connected to an end of the first case opposite the top end surface,

wherein the first case has structure forming the inner face, the back surface and the top end surface having the antenna mount surface and the antenna protection surface, and

wherein the first case and the second case are manually movable, about the hinge, between a folded position and an open position.

12. The mobile wireless terminal of claim 11, wherein the first case forms an interior, further comprising a receiver unit arranged within the first case and connected to the antenna.

13. The mobile wireless terminal of claim 1, wherein the case forms an interior, further comprising a receiver unit arranged within the interior and connected to the antenna.