Mobile wireless communications device with shunt component and related methods

• US 9,621,694 B2
• Filed: 12/09/2013
• Issued: 04/11/2017
• Est. Priority Date: 07/23/2010
• Status: Active Grant

• Current Assignee: Malikie Innovations Limited (Key Patent Innovations Limited)
• Original Assignee: Blackberry Limited
• Inventors: Wong, Joshua Kwan Ho, Whitmore, John Alfred, Cooke, Adrian Matthew, Downs, Steven Eugene, Van Wonterghem, Jari Kristian
• Primary Examiner(s): Magloire, Vladimir
• Assistant Examiner(s): HOLLIDAY, JAIME MICHELE
• Application Number:
  US14/100,909
• Publication Number:
  US 20140099993A1
• Time in Patent Office: 1,219 Days
• Field of Search: 4555751, 4555757
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H01Q 9/0442 with particular tuning means
• CPC Class Codes: H01Q 9/0464 Annular ring patch
• CPC Class Codes: H04M 1/0202 Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets constructional features of telephone transmitters or receivers, e.g. of speakers or microphones H04M1/03
• CPC Class Codes: H04M 1/0277 for a printed circuit board assembly
• CPC Class Codes: H05K 13/00 Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
• CPC Class Codes: Y10T 29/49117 Conductor or circuit manufacturing

Abstract

A mobile wireless communications device may include a portable housing including at least one electrically conductive housing portion configured to function as an antenna. The mobile wireless communications device may also include a printed circuit board (PCB) carried by the portable housing, and wireless transceiver circuitry carried by the PCB and including at least one circuit element carried by the PCB. The mobile wireless communications device may also include at least one current shunt component coupled between the at least one electrically conductive housing portion and the at least one circuit element.

Claims

1. An electronic device comprising:

a housing comprising an electrically conductive continuous closed ring around a periphery thereof;

wireless transceiver circuitry carried by said housing and comprising a plurality of circuit elements; and

a plurality of current shunt components carried by said housing, each of the plurality of current shunt components being electrically coupled between said electrically conductive continuous closed ring and a common node of a group of circuit elements of said plurality of circuit elements to define a plurality of unit cells, the plurality of unit cells comprising passband unit cells and stopband unit cells that are arranged to cause said electrically conductive continuous closed ring to have at least one current carrying portion and at least one non-current carrying portion, wherein each of the plurality of unit cells comprises a subset of the plurality of circuit elements and one of the plurality of current shunt components that are positioned orthogonal to each other along an X, Y and Z axis, respectively.

2. The electronic device according to claim 1, further comprising a printed circuit board (PCB) carried by said housing and mounting said wireless transceiver circuitry;

and wherein said PCB and said electrically conductive closed ring are positioned to define an air gap therebetween.

3. The electronic device according to claim 2, further comprising a dielectric material body between said PCB and said electrically conductive continuous closed ring, wherein a size of a separation between the plurality of unit cells and the housing causes the generated electric field to be uniform along the Z axis between the plurality of unit cells and the housing.

4. The electronic device according to claim 1, wherein said plurality of circuit elements comprises at least one conductive trace on said PCB, and wherein adjacent circuit elements of the plurality of unit cells have a spacing that causes a generated electric field to be polarized vertically between the plurality of unit cells and the housing.

5. The electronic device according to claim 1, wherein said electrically conductive continuous closed ring comprises at least one metallic material portion.

6. The electronic device according to claim 1, wherein said plurality of circuit elements comprises at least one programmable circuit element.

7. The electronic device according to claim 1, wherein the group of circuit elements are all capacitors or are all inductors.

8. The electronic device according to claim 7, wherein the group of circuit elements comprise four inductors.

9. The electronic device according to claim 7, wherein the group of circuit elements comprise four capacitors.

10. The electronic device according to claim 1, wherein said plurality of current shunt components comprises at least one inductor.

11. The electronic device according to claim 1, wherein said plurality of current shunt components comprises at least one capacitor.

12. An electronic device comprising:

an electrically conductive continuous closed ring;

wireless transceiver circuitry comprising a plurality of circuit elements; and

a plurality of current shunt components electrically that are each coupled between said electrically conductive continuous closed ring and a common node of a group of circuit elements of said plurality of circuit elements to define a plurality of unit cells, the plurality of unit cells comprising passband unit cells and stopband unit cells that are arranged to cause said electrically conductive continuous closed ring to have at least one current carrying portion and at least one non-current carrying portion, wherein adjacent circuit elements of the plurality of unit cells have a spacing that causes a generated electric field to be polarized vertically between the plurality of unit cells and a housing.

13. The electronic device according to claim 12, further comprising a printed circuit board (PCB) mounting said wireless transceiver circuitry;

and wherein said PCB and said electrically conductive closed ring are positioned to define an air gap therebetween.

14. The electronic device according to claim 12, wherein said plurality of circuit elements comprises at least one conductive trace on said PCB, and wherein a size of a separation between the plurality of unit cells and the housing causes the generated electric field to be uniform along a Z axis between the plurality of unit cells and the housing.

15. The electronic device according to claim 12, wherein said plurality of circuit elements comprises at least one programmable circuit element.

16. The electronic device according to claim 12, wherein the group of circuit elements are all capacitors or are all inductors.

17. The electronic device according to claim 12, said plurality of circuit elements comprises at least one of an inductor and a capacitor.

18. The electronic device according to claim 12, wherein said plurality of current shunt components comprises at least one of an inductor and a capacitor.