Mobile wireless communications device having dual antenna system for cellular and WiFi

• US 9,263,795 B2
• Filed: 08/28/2014
• Issued: 02/16/2016
• Est. Priority Date: 08/31/2006
• Status: Active Grant

• Current Assignee: Malikie Innovations Limited (Key Patent Innovations Limited)
• Original Assignee: Blackberry Limited
• Inventors: Man, Ying Tong, Qi, Yihong
• Primary Examiner(s): Nguyen, Hoang V
• Application Number:
  US14/471,521
• Publication Number:
  US 20140368390A1
• Time in Patent Office: 537 Days
• Field of Search: 343/702
• US Class Current: 1/1
• CPC Class Codes: H01Q 1/2291 used in bluetooth or WI-FI devices of Wireless Local Area Networks [WLAN] H01Q1/241 takes precedence; WLAN in general H04W
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H01Q 1/521 reducing the coupling between adjacent antennas
• CPC Class Codes: H01Q 1/523 between antennas of an array
• CPC Class Codes: H01Q 21/0087 Apparatus or processes specially adapted for manufacturing antenna arrays manufacturing waveguides H01P11/00
• CPC Class Codes: H01Q 21/28 Combinations of substantially independent non-interacting antenna units or systems multiple beam H01Q25/00
• CPC Class Codes: H01Q 25/00 Antennas or antenna systems providing at least two radiating patterns arrangements for changing or varying the orientation or the shape of the directional pattern H01Q3/00
• CPC Class Codes: H01Q 9/045 with particular feeding means for circular polarisation H01Q9/0428
• CPC Class Codes: H04M 1/026 Details of the structure or mounting of specific components
• CPC Class Codes: Y10T 29/49016 Antenna or wave energy "plumbing" making
• CPC Class Codes: Y10T 29/49018 with other electrical component

Abstract

A mobile wireless communications device includes a housing and circuit board carried by the housing. Radio Frequency (RF) circuitry is mounted on the circuit board. A first antenna is supported by the circuit board within the housing and operatively connected to the RF circuitry and configured for cellular phone communications. A second antenna is supported by the circuit board within the housing and operatively connected to the RF circuitry and configured for WiFi communications. The second antenna comprises an inverted-F or monopole antenna having an opening gap that is pointed away from the first antenna.

Claims

1. A mobile wireless communications device comprising:

a housing;

circuitry within said housing;

a first antenna within said housing and coupled to said circuitry for cellular communications in at least one first frequency band; and

a second antenna within said housing and coupled to said circuitry for communications in at least one second frequency band;

wherein said second antenna comprises a monopole antenna defining an opening gap pointed in a direction within said housing away from said first antenna, and

wherein said at least one second frequency band is harmonically related to said at least one first frequency band.

2. The mobile wireless communications device according to claim 1, wherein said second antenna is bottom-fed relative to said first antenna.

3. The mobile wireless communications device according to claim 2 further comprising a circuit board within said housing;

and wherein at least one of said first and second antennas is supported by said circuit board.

4. The mobile wireless communications device according to claim 3, wherein said circuit board is coupled to an antenna ground plane.

5. The mobile wireless communications device according to claim 1 wherein said housing comprises first and second opposing housing portions;

and wherein said first antenna is supported within the first housing portion, and said second antenna is supported within the second housing portion.

6. The mobile wireless communications device according to claim 5 wherein the first housing portion comprises a lower housing portion, and the second housing portion comprises an upper housing portion.

7. The mobile wireless communications device according to claim 1 wherein said housing comprises at least one of a static housing, a flip housing, and a sliding housing.

8. The mobile wireless communications device according to claim 1 wherein the at least one first frequency band comprises at least one Global System for Mobile (GSM) communications frequency band.

9. The mobile wireless communications device according to claim 1 wherein the at least one second frequency band comprises at least one 802.11 standards frequency band.

10. The mobile wireless communications device according to claim 1 wherein the opening gap is directed towards an adjacent end of said housing.

11. A mobile wireless communications device comprising:

a housing;

circuitry within said housing;

a first antenna extending in a first direction within said housing and coupled to said circuitry for cellular communications in at least one first frequency band; and

a second antenna coupled to said circuitry for communications in at least one second frequency band,

wherein said second antenna comprises a monopole antenna defining an opening gap pointed in a second direction within said housing transverse to the first direction and away from said first antenna;

wherein said at least one second frequency band is harmonically related to said at least one first frequency band.

12. The mobile wireless communications device according to claim 11, wherein said second antenna is bottom-fed relative to said first antenna.

13. The mobile wireless communications device according to claim 11, wherein the at least one first frequency band comprises at least one Global System for Mobile (GSM) communications frequency band.

14. The mobile wireless communications device according to claim 11 wherein the at least one second frequency band comprises at least one 802.11 standards frequency band.

15. The mobile wireless communications device according to claim 11 further comprising a circuit board within said housing;

and wherein at least one of said first and second antennas is supported by said circuit board.

16. The mobile wireless communications device according to claim 15 wherein said circuit board is coupled to an antenna ground plane.

17. The mobile wireless communications device according to claim 11 wherein said housing comprises first and second opposing housing portions;

and wherein said first antenna is supported within the first housing portion, and said second antenna is supported within the second housing portion, and wherein said housing comprises at least one of a static housing, a flip housing, and a sliding housing.

18. The mobile wireless communications device according to claim 17 wherein the first housing portion comprises a lower housing portion, and the second housing portion comprises an upper housing portion, and wherein the opening gap is directed towards an adjacent end of said housing.

19. A method of making a mobile wireless communications device comprising:

providing a housing with circuitry therein;

forming a first antenna extending within the housing and coupled to the circuitry for cellular communications in at least one first frequency band; and

forming a second antenna coupled to the circuitry for communications in at least one second frequency band, the second antenna comprising a monopole antenna defining an opening gap pointed within the housing away from the first antenna, wherein said at least one second frequency band is harmonically related to said at least one first frequency band.

20. The method according to claim 19 wherein said second antenna is bottom-fed relative to said first antenna and further comprising positioning a circuit board within the housing;

and wherein at least one of the first and second antennas is supported by the circuit board.

21. The method according to claim 20 wherein the circuit board is coupled to an antenna ground plane.

22. The method according to claim 19 further comprising positioning first and second circuit boards within the housing;

and wherein the first antenna is supported by the first circuit board, and the second antenna is supported by the second circuit board.

23. The method according to claim 19 wherein the housing comprises first and second opposing housing portions;

and wherein the first antenna is supported within the first housing portion, and the second antenna is supported within the second housing portion.

24. The method according to claim 23 wherein the first housing portion comprises a lower housing portion, and the second housing portion comprises an upper housing portion.

25. The method according to claim 19 wherein the housing comprises at least one of a static housing, a flip housing, and a sliding housing.

26. The method according to claim 19 wherein the at least one first frequency band comprises at least one Global System for Mobile (GSM) communications frequency band.

27. The method according to claim 19 wherein the at least one second frequency band comprises at least one 802.11 standards frequency band.

28. The method according to claim 19 wherein the opening gap is directed towards an adjacent end of the housing.