Mobile wireless communications device including antenna assembly having shorted feed points and inductor-capacitor circuit and related methods

• US 8,952,852 B2
• Filed: 03/10/2011
• Issued: 02/10/2015
• Est. Priority Date: 03/10/2011
• Status: Active Grant

• Current Assignee: Malikie Innovations Limited (Key Patent Innovations Limited)
• Original Assignee: Blackberry Limited
• Inventors: Badaruzzaman, Firass Mirza, Yang, Shing Lung Steven, Rojas, Brian Francisco
• Primary Examiner(s): Karacsony, Robert
• Application Number:
  US13/045,104
• Publication Number:
  US 20120229349A1
• Time in Patent Office: 1,433 Days
• Field of Search: 343/749, 343/702
• US Class Current: 343/702
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H01Q 5/371 Branching current paths
• CPC Class Codes: H01Q 9/14 Length of element or elements adjustable telescopic elements H01Q1/10
• CPC Class Codes: H01Q 9/42 with folded element, the folded parts being spaced apart a small fraction of the operating wavelength
• CPC Class Codes: Y10T 29/49016 Antenna or wave energy "plumbing" making

Abstract

A mobile wireless communications device may include a portable housing, at least one wireless transceiver carried by the portable housing, and at least one satellite positioning signal receiver carried by the portable housing. The device may also include an antenna assembly carried by the portable housing. The antenna assembly may include a base conductor having a pair of shorted antenna feed points defined therein and coupled to the at least one wireless transceiver and the at least one satellite positioning receiver, and a first conductor aim extending outwardly from the base conductor. The antenna assembly may also include a second conductor arm also extending outwardly from the base conductor. The second conductor arm may include a proximal conductor portion adjacent the base conductor, a distal conductor portion, and an inductor-capacitor circuit coupling the proximal and distal conductor portions.

Claims

1. A mobile wireless communications device comprising:

a portable housing;

at least one wireless transceiver carried by said portable housing;

at least one satellite positioning signal receiver carried by said portable housing; and

an antenna assembly carried by said portable housing and comprising

a base conductor having a pair of shorted antenna feed points defined therein and coupled to said at least one wireless transceiver and said at least one satellite signal positioning receiver,

a first conductor arm extending outwardly from said base conductor,

a second conductor arm also extending outwardly from said base conductor and comprising

a proximal conductor portion adjacent said base conductor,

a distal conductor portion spaced apart from said proximal conductor portion, and

an inductor-capacitor circuit coupling said proximal and distal conductor portions.

2. The mobile wireless communications device according to claim 1, wherein said antenna assembly further comprises a dielectric substrate carrying said base conductor, said first conductor arm, and said second conductor arm.

3. The mobile wireless communications device according to claim 2, wherein said dielectric substrate comprises a flexible dielectric substrate.

4. The mobile wireless communications device according to claim 1, wherein said first conductor arm doubles back toward said base conductor.

5. The mobile wireless communications device according to claim 1, wherein said second conductor arm doubles back toward said base conductor.

6. The mobile wireless communications device according to claim 1, wherein said portable housing has opposing upper and lower portions;

and wherein said antenna assembly is adjacent the upper portion of said portable housing.

7. The mobile wireless communications device according to claim 6, wherein said first conductor arm extends laterally along the upper portion of said portable housing.

8. The mobile wireless communications device according to claim 6, wherein said second conductor arm extends laterally along the upper portion of said portable housing.

9. The mobile wireless communications device according to claim 1, wherein said first and second conductor arms are configured to provide frequency diversity.

10. The mobile wireless communications device according to claim 1, wherein said first conductor arm is configured to operate at a Personal Communications Service (PCS) band.

11. The mobile wireless communications device according to claim 1, wherein said second conductor arm is configured to operate at an Advanced Mobile Phone System (AMPS) band.

12. The mobile wireless communications device according to claim 1, wherein said inductor-capacitor circuit is configured to operate at a Global Positioning System (GPS) band.

13. An antenna assembly for a mobile wireless communications device comprising a portable housing, at least one wireless transceiver carried by the portable housing, and at least one satellite positioning signal receiver also carried by the portable housing, the antenna assembly comprising:

a base conductor having a pair of shorted antenna feed points defined therein and to be coupled to the at least one wireless transceiver and the at least one satellite positioning signal receiver;

a first conductor arm extending outwardly from said base conductor;

a second conductor arm also extending outwardly from said base conductor and comprising

a proximal conductor portion adjacent said base conductor,

a distal conductor portion spaced apart from said proximal conductor portion, and

an inductor-capacitor circuit coupling said proximal and distal conductor portions.

14. The antenna assembly according to claim 13, further comprising a dielectric substrate carrying said base conductor, said first conductor arm, and said second conductor arm.

15. The antenna assembly according to claim 14, wherein said dielectric substrate comprises a flexible dielectric substrate.

16. The antenna assembly according to claim 13, wherein said first conductor arm doubles back toward said base conductor.

17. The antenna assembly according to claim 13, wherein said second conductor arm doubles back toward said base conductor.

18. The antenna assembly according to claim 13, wherein said first conductor arm is configured to operate at a Personal Communications Service (PCS) band;

wherein said second conductor arm is configured to operate at an Advanced Mobile Phone System (AMPS) band; and

wherein said inductor-capacitor circuit is configured to operate at a Global Positioning System (GPS) band.

19. A method of making an antenna assembly for a mobile wireless communications device comprising a portable housing, at least one wireless transceiver carried by the portable housing, and at least one satellite positioning signal receiver also carried by the portable housing, the method comprising:

forming a base conductor to have a pair of shorted antenna feed points defined therein and to be coupled to the at least one wireless transceiver and the at least one satellite positioning signal receiver;

forming a first conductor arm extending outwardly from the base conductor; and

forming a second conductor arm also extending outwardly from the base conductor and comprising

a proximal conductor portion adjacent the base conductor,

a distal conductor portion spaced apart from the proximal conductor portion, and

an inductor-capacitor circuit coupling said proximal and distal conductor portions.

20. The method according to claim 19, further comprising mounting the base conductor, the first conductor arm, and the second conductor arm on a dielectric substrate.

21. The method according to claim 20, wherein the dielectric substrate comprises a flexible dielectric substrate.

22. The method according to claim 19, wherein forming the first conductor arm comprises forming the first conductor arm to double back toward the base conductor.

23. The method according to claim 19, wherein forming the second conductor arm comprises forming the second conductor arm to double back toward the base conductor.

24. The method according to claim 19, wherein the first conductor arm is formed to operate at a Personal Communications Service (PCS) band;

wherein the second conductor arm is formed to operate at an Advanced Mobile Phone System (AMPS) band; and

wherein said inductor-capacitor circuit is configured to operate at a Global Positioning System (GPS) band.