Systems and methods that employ multiple antennas with a device for mobile communication

• US 7,512,413 B2
• Filed: 06/03/2003
• Issued: 03/31/2009
• Est. Priority Date: 06/03/2003
• Status: Expired due to Fees

• Current Assignee: Nokia Corporation
• Original Assignee: Nokia Corporation
• Inventors: Hui, Ping, Eggleston, Steve, Van Wongterghem, Jari
• Primary Examiner(s): Nguyen; Duc M
• Application Number:
  US10/453,798
• Publication Number:
  US 20050041624A1
• Time in Patent Office: 2,128 Days
• Field of Search: 455/552.1, 455/553.1, 455/132, 455/272, 455/286, 455/289, 343/702, 343/722, 343/728, 343/751, 343/755, 343/736
• US Class Current: 455/550.1
• CPC Class Codes: G01S 19/36 relating to the receiver frond end
• 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 21/28 Combinations of substantially independent non-interacting antenna units or systems multiple beam H01Q25/00
• CPC Class Codes: H01Q 21/30 Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
• CPC Class Codes: H01Q 7/00 Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
• CPC Class Codes: H01Q 9/42 with folded element, the folded parts being spaced apart a small fraction of the operating wavelength

Abstract

The present invention comprises systems and methods for cellular, PCS, GPS and/or Bluetooth mobile communication (e.g., a mobile telephone). The systems and methods employ a fully integrated dual band IFA/loop CDMA antenna for cellular and PCS communication. Fully integrating the CDMA antenna within a PWB provides for mitigation of lumped elements to establish dual banding, and can provide for reduced antenna size, device size, cost and interference form a user'"'"'s hand. The IFA antenna is configured to transmit and receive within the cellular frequency band via a capacitive tap, and the loop antenna is configured to transmit and receive within the PCS frequency band via an impedance matching stub and ground location. The system and methods further employ a firewall to mitigate antenna coupling, and a metal reflector to reduce the electromagnetic reflection, and improve antenna gain and efficiency.

Claims

1. An apparatus comprising:

a printed wiring board;

a code division multiple access antenna fully integrated within the printed wiring board, wherein the code division multiple access antenna comprises an inverted F antenna and a loop antenna;

a global positioning system antenna; and

a conductor separate from and disposed between the fully integrated code division multiple access antenna and the global positioning system antenna to mitigate coupling between antennas, wherein the global positioning system antenna comprises a global positioning system assembly in close arrangement to the printed wiring board, wherein the global positioning system assembly has a contact to interface to the printed wiring board.

2. The apparatus of claim 1, wherein the conductor is coupled electrically at one end to ground and is electrically open on an opposite end.

3. The apparatus of claim 1, wherein the global positioning system assembly comprises at least a radiating element to receive signals and a carrier to house the radiating element, wherein the contact is a spring contact.

4. The apparatus of claim 3, wherein the carrier is constructed of plastic.

5. The apparatus of claim 1, wherein at least one of the antennas comprises a gamma match.

6. The apparatus of claim 5, wherein the gamma match further provides for global positioning system antenna impedance matching.

7. The apparatus of claim 1, wherein the printed wiring board comprises the global positioning system antenna and the conductor.

8. The apparatus of claim 7, wherein the printed wiring board further comprises a bluetooth antenna.

9. An antenna system comprising:

a code division multiple access antenna, wherein the code division multiple access antenna comprises an inverted F antenna and a loop antenna;

a global positioning system antenna;

a third antenna to communicate with one or more devices employing a personal area network technology;

at least one conductor separate from and disposed between antennas to mitigate coupling between antennas; and

, a printed wiring board into which the code division multiple access antenna is fully integrated, wherein the fully integrated code division multiple access antenna;

the global positioning system antenna; and

the third antenna is configured to operate with the printed wiring board.

10. The system of claim 9, wherein the conductor is constructed 8 mm in length.

11. The system of claim 9, the fully integrated code division multiple access antenna employing a capacitive tap to facilitate configuring the fully integrated code division multiple access antenna to transmit and receive signals within a first frequency band.

12. The system of claim 9, the global positioning system antenna employing an impedance matching stub to match antenna impedance and to facilitate configuring the global positioning system antenna to transmit and receive signals within a second frequency band.

13. The system of claim 9, the third antenna employing a gamma match to facilitate configuring the third antenna to receive signals.

14. The system of claim 9, wherein the conductor is coupled electrically at one end to ground and is electrically open ended on an opposite end.

15. The system of claim 9, wherein the global positioning system antenna comprises a global positioning system antenna assembly, wherein the global positioning system antenna assembly comprises a spring contact that is operatively arranged with respect to a spring contact point on the printed wiring board.

16. The antenna system of claim 9, wherein the printed wiring board comprises the global positioning system antenna and the conductor.

17. The antenna system of claim 16, wherein the printed wiring board further comprises a bluetooth antenna.

18. An apparatus comprising:

a printed wiring board;

a code division multiple access antenna fully integrated within the printed wiring board, wherein the code division multiple access antenna comprises an inverted F antenna and a loop antenna operable at a plurality of frequency bands, a global positioning system antenna, and a third antenna therein;

a reflector coupled to a printed wiring board;

a mobile communication device shell to enclose the printed wiring board and the reflector; and

, a cover to facilitate securing the printed wiring board within the mobile communication device shell, wherein the global positioning system antenna comprises a global positioning system assembly in close arrangement to the printed wiring board, wherein the global positioning system assembly has a contact to interface to the printed wiring board.

19. The apparatus of claim 18, the reflector employed to reduce the amount of electromagnetic reflection.

20. The apparatus of claim 18, the mobile communication device shell employed in a side phone configuration.

21. The apparatus of claim 18, wherein the printed wiring board comprises the global positioning system antenna and the conductor.

22. The apparatus of claim 21, wherein the printed wiring board further comprises a bluetooth antenna.

23. A method comprising:

providing a printed wiring board in a mobile device;

providing a code division multiple access antenna for the mobile device fully integrated within the printed wiring board, wherein the code division multiple access antenna comprises an inverted F antenna and a loop antenna;

providing a global positioning system antenna for the mobile device; and

providing a conductor separate from and disposed between at least two of the antennas to mitigate coupling between antennas, wherein the global positioning system antenna comprises a global positioning system assembly in close arrangement the printed wiring board, wherein the global positioning system assembly has a contact to interface to the printed wiring board.

24. The method of claim 23, wherein the conductor is coupled electrically at one end to ground and is electrically open at an opposite end.

25. The method of claim 23, wherein the global positioning system assembly comprises at least a radiating element to receive signals and a carrier to house the radiating element, wherein the contact is a spring contact.

26. The apparatus of claim 23, wherein the antennas are constructed of conductive material.

27. The method of claim 23, wherein the printed wiring board comprises the global positioning system antenna and the conductor.

28. The method of claim 27, wherein the printed wiring board further comprises a bluetooth antenna.

29. An apparatus comprising:

a printed wiring board;

first means for receiving a code division multiple access wireless signal, the first means being comprised of an inverted F antenna and a loop antenna, the first means being fully integrated within the printed wiring board;

second means for receiving a global positioning system wireless signal, wherein the second means has a contact to interface to a printed wiring board; and

means for mitigating coupling between the first and second means for receiving a wireless signal, wherein the means for mitigating coupling is separate from and disposed between the first and second means.

30. The apparatus of claim 29, wherein the wireless signal received by the first means occupies a frequency band that is different from the frequency band the wireless signal received by the second means.

31. The apparatus of claim 30, wherein the means for mitigating coupling is a conductor that is electrically grounded on one end and electrically open on an opposite end.

32. The apparatus of claim 31, wherein the first means for receiving is a first antenna and the second means for receiving is a second antenna.

33. The apparatus of claim 32, wherein the first antenna is a fully integrated code division multiple access antenna.

34. The apparatus of claim 32, wherein the second antenna is a global positioning system antenna.

35. The apparatus of claim 29, wherein the printed wiring board comprises the second means and the means for mitigating coupling.

36. The method of claim 35, wherein the printed wiring board further comprises a bluetooth antenna.