Antenna switch assembly, and associated method, for a radio communication station

• US 6,600,931 B2
• Filed: 03/30/2001
• Issued: 07/29/2003
• Est. Priority Date: 03/30/2001
• Status: Expired due to Term

• Current Assignee: RPX Corporation
• Original Assignee: Nokia Corporation
• Inventors: Li, Kevin, Sutton, Gregory, Mix, Robert, Trinh, Lanh
• Primary Examiner(s): Bost, Dwayne
• Assistant Examiner(s): CONTEE, JOY KIMBERLY
• Application Number:
  US09/823,017
• Publication Number:
  US 20020142796A1
• Time in Patent Office: 851 Days
• Field of Search: 455/552, 455/426, 455/432, 455/436, 455/277.1, 455/277.2, 455/273, 455/278.1, 455/272, 455/553, 455/83, 455/78
• US Class Current: 455/552.1
• CPC Class Codes: H04B 1/406 with more than one transmission mode, e.g. analog and digital modes
• CPC Class Codes: H04B 1/48 in circuits for connecting transmitter and receiver to a common transmission path, e.g. by energy of transmitter H04B1/46 takes precedence

Abstract

A switch assembly, and an associated method, for a multi-mode mobile station operable to communicate pursuant to two or more communication services. Selected antenna transducers, or test ports, are selectably connected by way of the switch assembly to selected portions of the radio circuitry of the multi-mode mobile station. Non-mechanical switching is effectuated, thereby to provide appropriate connections of appropriate portions of the radio circuitry with the antenna transducers, or test ports, of the multi-mode mobile station.

Claims

1. In a communication station having first circuitry operable to communicate pursuant to a first communication system and at least second circuitry operable to communicate pursuant to a second communication system, an improvement of switch assembly for switchingly connecting a selected one of a first antenna transducer port, a second antenna transducer port and at least a third antenna transducer port with a selected one of the first circuitry, and at least second circuitry, said switch assembly comprising:

a first switch element set coupled to the first antenna transducer port, to the first circuitry and to the second circuitry, said first switch element set selectably operable to connect the first antenna transducer port to a selected one, if any, of the first circuitry and the at least second circuitry;

a second switch element set coupled to the second antenna transducer port, to the first circuitry, and to the at least the second circuitry, said second switch element set selectably operable to connect the second antenna transducer port to a selected one, if any, of the first circuitry and the at least second circuitry,

a third switch element set coupled to the third antenna transducer port, to the first circuitry, said third witch clement set selectably operable to connect the third antenna transducer port to a selected one, if any, of the first circuitry and the at least second circuitry, and

a controller coupled to said first switch element set and to said second switch element set, and controller for controlling positioning of said switch slant set and said second switch element set.

2. The switch assembly of claim 1 wherein said first switch element set comprises a first first-set switch element positioned between the first circuitry and the first antenna transducer port and a second first-set switch element positioned between the second circuitry and the first antenna transducer port, the first first-set switch element positioned alternately in a closed position to electrically connect the first antenna transducer port with the first circuitry and in an open position to electrically isolate the first antenna transducer port from the first circuitry, and the second first-set switch element positionable alternately in a closed position to electrically connect the first antenna transducer port with the second circuitry, and in an open position to electrically isolate the first antenna transducer port from the second circuitry.

3. The switch assembly of claim 2 wherein said controller is operable to control positioning of the first first-set switch element in a selected one of the open position and the closed position and to control positioning of the second first-set switch element in a selected one of the open position and the closed position.

4. The switch assembly of claim 3 wherein said controller selectably causes positioning of the first first-set switch element in the open position and the second first-set switch element in the closed position, positioning of the first first-set switch element in the closed position and the second first-set switch element in the open position, and positioning of both the first and second first-set switch elements, respectively, in the open positions.

5. The switch assembly of claim 4 wherein said controller further prohibits positioning of both the first and second first-set switch elements simultaneously in the closed positions.

6. The switch assembly of claim 3 wherein the first and second first-set switch elements comprise transistor switches.

7. The switch assembly of claim 3 wherein the first and second first-set switch elements comprise MEM switches.

8. The switch assembly of claim 1 wherein said second switch element set comprises a first second-set switch element positioned between the first circuitry and the second antenna transducer port and a second second-set switch element positioned between the second circuitry and the second antenna transducer port, the first second-set switch element positionable alternately in a closed position to electrically connect the second antenna transducer part with the first circuitry and in an open position to electrically isolate the second antenna transducer port from the first circuitry, and the second second-set switch element positionable alternately in a closed position to electrically connect thc first the second antenna transducer port with the second circuitry and in an open position to electrically isolate the second antenna transducer port from the second circuitry.

9. The switch assembly of claim 8 wherein said controller is operable to control positioning of the first second-set switch element in a selected one of the open position and the closed position and to control positioning of the second second-set switch element in a selected one of the open position and the closed position.

10. The switch assembly of claim 9 wherein said controller selectably causes positioning of the first second-set switch element in the open position and the second second-set switch element in the closed position, positioning of the first second-set switch element in the closed position and the second second-set switch element in the open position, and positioning of both the first and second second-set switch elements, respectively, in the open positions.

11. The switch assembly of claim 1 wherein said third switch element set comprises a first third-set switch element positioned between the first circuitry and the third antenna transducer port and a second third-set switch element positioned between the second circuitry and the third antenna transducer port, the first third-set switch element positionable alternately in a closed position to electrically connect the third antenna transducer port with the first circuitry and in an open position to electrically isolate the third antenna transducer port from the first circuitry and the second third-set switch element positionable alternately in a closed position to electrically connect the third antenna transducer port with the second circuitry and in an open position to electrically isolate the third antenna transducer port from the second circuitry.

12. The switch assembly of claim 11 wherein said controller is operable to control positioning of the first third-set switch element in a selected one of the open position and the closed position and to control positioning of the second third-set switch element in a selected one of the open position and the closed position.

13. The switch assembly of claim 11 wherein the communication station further comprises a load element and wherein said electronic switch assembly further comprises a shunt switch element positioned between the second antenna transducer port and the load element, said shunt switch element selectably positionable in an open position and in a closed position.

14. The switch assembly of claim 13 wherein said controller selectably causes positioning of said shunt switch element in the closed position when said first antenna switch element is positioned to connect the first antenna transducer port with the first circuitry.

15. The switch assembly of claim 13 wherein a whip antenna transducer is coupled to the first antenna transducer port, the whip antenna transducer translatable between a retracted position and an extracted position, wherein a patch antenna transducer is coupled to the second antenna transducer port and wherein said controller controls positioning of said first switch element set and said second switch element set to connect a selected one of the first circuitry and the second circuitry with both the first antenna transducer port and the second antenna transducer port when the whip antenna transducer is in the extracted position.

16. The switch assembly of claim 15 wherein said controller controls positioning of said first switch element set and said second switch element set to connect the selected one of the first circuitry and the second circuitry with the second antenna transducer port and to prevent connection of the selected one of the first circuitry and the second circuitry with the first antenna transducer port when the first antenna transducer is positioned in the retracted position.

17. The switch assembly of claim 16 wherein said controller causes positioning of said shunt switch element in the closed position when said first switch element set connects the first antenna transducer port to either of the first circuitry and the second circuitry.

18. The switch assembly of claim 1 wherein said first switch element set, said second switch element set, and said controller are embodied at a common substrate.