Electromagnetic wave shield box

• US 7,512,430 B2
• Filed: 04/14/2006
• Issued: 03/31/2009
• Est. Priority Date: 04/18/2005
• Status: Expired due to Fees

• Current Assignee: Anritsu Corporation
• Original Assignee: Anritsu Corporation
• Inventors: Nakamura, Katsushi
• Primary Examiner(s): Le; Nhan T
• Application Number:
  US11/403,806
• Publication Number:
  US 20060232491A1
• Time in Patent Office: 1,082 Days
• Field of Search: 455/90.3, 455/556.1, 455/575.1, 455/575.3, 455/575.8, 343/702, 361/816
• US Class Current: 455/575.8
• CPC Class Codes: G01R 29/0821 rooms and test sites therefor, e.g. anechoic chambers, open field sites or TEM cells for testing antennas G01R29/105
• CPC Class Codes: H01Q 1/242 specially adapted for hand-held use
• CPC Class Codes: H01Q 1/526 Electromagnetic shields

Abstract

Disclosed herein is an electromagnetic wave shield box for shielding a wireless terminal received therein from external electromagnetic waves. The electromagnetic wave shield box includes a box body for allowing the wireless terminal to be received therein, the box body having a coupling antenna mounted therein, the coupling antenna being spatially coupled with an antenna of the wireless terminal, a cover constructed to be openable and closable with respect to the box body, a reference table mounted at a predetermined position above the coupling antenna in the box body, the reference table having a reference surface, which is referenced when the wireless terminal is disposed thereon, a loading unit for allowing the wireless terminal to be loaded thereon, the loading unit being movable along the reference surface, and fixing means for detachably fixing the loading unit, on which the wireless terminal is loaded, to a predetermined position of the reference surface of the reference table to define the positional relation between the antenna of the wireless terminal and the coupling antenna.

Claims

1. An electromagnetic wave shield box for shielding a wireless terminal received therein from external electromagnetic waves, the electromagnetic wave shield box comprising:

a box body for allowing the wireless terminal to be received therein, the box body having a coupling antenna mounted therein, the coupling antenna being spatially coupled with an antenna of the wireless terminal;

a cover constructed to be openable and closable with respect to the box body;

a reference table mounted at a predetermined position above the coupling antenna in the box body, the reference table having a reference surface, which is referenced when the wireless terminal is disposed thereon;

a loading unit for allowing the wireless terminal to be loaded thereon, the loading unit being movable along the reference surface; and

fixing means for detachably fixing the loading unit, on which the wireless terminal is loaded, to a predetermined position of the reference surface of the reference table to define the positional relation between the antenna of the wireless terminal and the coupling antenna.

2. The electromagnetic wave shield box according to claim 1, further comprising:

position indication means for indicating the position of the loading unit disposed on the reference surface, the position indication means being constituted by an indication part provided at the reference table and a specifying part provided at the loading unit for indicating a specific position of the indication part.

3. The electromagnetic wave shield box according to claim 2,

wherein the indication part is a plurality of symbols provided on the reference surface, and

the specifying part is a hole formed in the loading unit for allowing at least one of the symbols to be revealed therethrough.

4. The electromagnetic wave shield box according to claim 2, wherein

the indication part is a coordinate axis having a plurality of straight lines provided on the reference surface, while the straight lines are arranged at predetermined intervals along directions in which the loading unit is moved on the reference surface such that the loading unit is positioned, and symbols for indicating the respective straight lines, and

the specifying part is at least a part of the outer appearance of the loading unit, which is disposed along the straight lines in the case that the loading unit is disposed at the reference surface.

5. The electromagnetic wave shield box according to claim 1, wherein the fixing means includes locking holes formed at the reference surface of the reference table, through-holes formed at the loading unit, and fixing pins removably inserted into the locking holes through the through-holes for fixing the loading unit to the reference surface.

6. The electromagnetic wave shield box according to claim 3, wherein the loading unit is movable in a first movement pattern, in which the loading unit can be moved in a first linear direction extending along the reference surface and in a second linear direction perpendicular to the first linear direction, the second linear direction also extending along the reference surface, and/or in a second movement pattern, in which the loading unit can be moved in a rotating direction of the loading unit along the reference surface.

7. An electromagnetic wave shield box for shielding a wireless terminal received therein from external electromagnetic waves, the electromagnetic wave shield box comprising:

receiving means for receiving the wireless terminal to be tested therein, the receiving means having a coupling antenna mounted therein, the coupling antenna being electromagnetically coupled with an antenna of the wireless terminal;

a reference surface disposed at a predetermined position, where the reference surface is spaced apart from the coupling antenna, in the receiving means such that the reference surface extends in a direction perpendicular to a main emission direction of the coupling antenna; and

a loading unit for allowing the wireless terminal to be loaded thereon, the loading unit being movable along the reference surface such that the loading unit can be moved in the direction perpendicular to the main emission direction of the coupling antenna,

wherein the loading unit is positioned with respect to the reference surface such that the antenna of the wireless terminal and the coupling antenna can be electromagnetically coupled with each other under the optimum condition.