RF transceiver arrangement, terminal employing the arrangement, and method for fabricating terminal according to the arrangement

• US 7,174,132 B2
• Filed: 10/10/2003
• Issued: 02/06/2007
• Est. Priority Date: 11/14/2002
• Status: Active Grant

• Current Assignee: Nokia Technologies Oy (Nokia Corporation)
• Original Assignee: Nokia Corporation
• Inventors: Lilja, Antti, Kallunki, Markku
• Primary Examiner(s): Milord; Marceau
• Application Number:
  US10/684,170
• Publication Number:
  US 20040097269A1
• Time in Patent Office: 1,215 Days
• Field of Search: 455/423, 455/424, 455/67.11, 455/67.14, 455/562.1, 455/103, 455/462
• US Class Current: 455/67.11
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H04B 1/3833 Hand-held transceivers

Abstract

The invention relates to a circuit arrangement in association with the RF unit of a wireless terminal, in which circuit arrangement the RF unit and the antenna (3) of the wireless terminal are fabricated/mounted on the same circuit board (1) and where the antenna (3) is connected to the RF unit through at least one signal line (2). In the circuit arrangement, the signal line (2) from the RF unit to the antenna (3) is electrically connected during the final assembly by means of a jumper (5) which is fabricated as part of a mechanical component (6) belonging to the terminal. With the arrangement according to the invention, the RF unit can be tested without interference from the antenna.

Claims

1. A circuit arrangement associated with a RF unit of a wireless terminal for testing the RF unit prior to final assembly, in which circuit arrangement the RF unit and an antenna of the wireless terminal are fabricated/mounted on a common printed circuit board and in which the antenna is arranged so as to be connected with the RF unit through at least one signal line, where in said signal line is at least one break for electrically isolating the antenna from the RF unit and that the signal line is arranged to be connected across the break by means of a jumper during the assembly of the terminal.

2. The circuit arrangement according to claim 1, wherein said break in the signal line is located between a measuring pad and contact pad.

3. The circuit arrangement according to claim 1, wherein said jumper is part of a mechanical component to be installed in the wireless terminal during the final assembly.

4. The circuit arrangement according to claim 1, wherein said jumper is a discretely mounted component.

5. A cellular terminal comprising control means for the terminal, an antenna, a RF unit, and a means for testing the RF unit prior to the final assembly of the terminal, where the means for testing the RF unit comprises a signal line from the RF unit to the antenna, which signal line has a break in it for electrically isolating the antenna from the RF unit, and which break is arranged so as to be electrically connected through a jumper during the assembly of the terminal.

6. The terminal according to claim 5, wherein the break in the signal line is located between a measuring pad and contact pad.

7. The terminal according to claim 5, wherein said jumper is part of a mechanical component to be installed in the cellular terminal during assembly.

8. A manufacturing method for a cellular terminal, where a RF unit of a cellular terminal and an antenna of the cellular terminal are fabricated/mounted on a same printed circuit board and in which manufacturing method the RF unit is tested prior to a final assembly, and in which manufacturing method at least one break is made in a signal line traveling from the RF unit to the antenna, between a measuring pad and contact pad for electrically isolating the antenna from the RF unit, during measurements on the RF unit.

9. The manufacturing method according to claim 8, wherein the break between the measuring pad and contact pad is electrically connected by means of a jumper.

10. The manufacturing method according to claim 9, wherein the jumper is attached to a mechanical part in the terminal which, when installed in the final assembly, causes the jumper to electrically connect the measuring pad and contact pad.

11. The manufacturing method according to claim 9, wherein the jumper is mounted as a discrete component on the printed circuit board by means of an attachment mechanism in the jumper.