Radiation Redirecting External Case For Portable Communication Device and Antenna Embedded In Battery of Portable Communication Device

• US 20100113111A1
• Filed: 11/06/2009
• Published: 05/06/2010
• Est. Priority Date: 11/06/2008
• Status: Active Grant

• Current Assignee: Penumbra Brands, Inc.
• Original Assignee: Nonlinear Ion Dynamics, LLC
• Inventors: Wang, Rong, Wong, Alfred Y., Shields, Karl Richard, Moreno, Robert
• Granted Patent: US 8,208,980 B2
• Time in Patent Office: Days
• US Class Current: 455/575.500
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H01Q 1/245 with means for shaping the antenna pattern, e.g. in order to protect user against rf exposure
• CPC Class Codes: H01Q 1/48 Earthing means; Earth screens; Counterpoises
• CPC Class Codes: H01Q 15/14 Reflecting surfaces; Equivalent structures electromagnetic shields H01Q1/526
• CPC Class Codes: H01Q 5/371 Branching current paths
• CPC Class Codes: H01Q 9/0407 Substantially flat resonant element parallel to ground plane, e.g. patch antenna dipole H01Q9/285; monopole H01Q9/40
• CPC Class Codes: H04B 1/3838 Arrangements for reducing RF exposure to the user, e.g. by changing the shape of the transceiver while in use
• CPC Class Codes: H04B 1/3883 Arrangements for mounting batteries or battery chargers
• CPC Class Codes: H05K 9/0056 specially adapted for microwave applications

Abstract

An advanced antenna or set of antennae for a wireless device is provided by embedding the antennae into the battery case or generally the largest surface area of a wireless phone. The antenna connections are made through the battery'"'"'s connections to the wireless device. The antenna design can be compact and located in any area of the battery. The antenna design can be thin and flat, located at the back surface of the battery or the large rear surface of a wireless phone, facing away from the user. An RF shielding device can be embedded into the battery and configured in relation to the antenna such that the RF field intensity and the consequent specific absorption rate for the user is lowered while the outgoing signals of the wireless device remain fully adequate for the function of the wireless device. This feature is preserved for a multi-band operation because a digital phase shifter is used between two radiating antennae. An external case is used as a complement to the wireless phone to provide additional antennae, power and capability.

Claims

1. A wireless device comprising a battery, and an antenna embedded with said battery.

2. A wireless device as claimed in claim 1, wherein the antenna is built in a compact configuration and is located in one area of the battery.

3. A wireless device as claimed in claim 1, wherein the antenna is built in a thin, flat configuration and located on the back of the battery and parallel to the plane of the battery'"'"'s surface, on the side of the battery facing away from the user.

4. A wireless device as claimed in claim 3, further comprising an RF shielding device placed on the opposite side of the battery from the antenna such that it is separated from the antenna by a fraction of one-quarter of the wavelength of the transmission signal.

5. A wireless device as claimed in claim 3, further comprising:

a second antenna located on an internal surface of said wireless device; and

a microprocessor for adjusting the relative phase between the two antennae such that the radiation is directed away from the user.

6. A wireless device as claimed in claim 5, wherein the phase between the two antennae is controlled by said microprocessor according to the frequency band being used.

7. A wireless device as claimed in claim 3, wherein an RF shielding device is incorporated with a layer of dielectric material to achieve an effective spacing between the RF shield and the antenna of one-quarter of the wavelength of the transmission signal.

8. A wireless device as claimed in claim 1, such that separate antenna components are located apart from one another within the battery'"'"'s case.

9. A case for a wireless device, comprising a body having at least one interface that is connectable to an external connector on the wireless device, said body including at least one of a second antenna, a manual charging system, an earpiece, or additional memory for use by said wireless device through said interface to said external connector.

10. A case for a wireless device, comprising a passive antenna array composed of at least one of loops, Yagi elements and patches, and an interface for coupling said passive antenna array to a connector on said wireless device.

11. A wireless device comprising a body, and an antenna embedded on a surface of a component of said wireless device internal to said body.

12. A wireless device as claimed in claim 11, further comprising:

a second antenna located on another surface of a component of said wireless device; and

a microprocessor for adjusting the relative phase between the two antennae such that the radiation is directed away from the user.

13. A wireless device as claimed in claim 12, wherein said relative phase is controlled in accordance with a frequency band being used by said wireless device.

14. A wireless device as claimed in claim 12, wherein said antennae are configured as multi-band antennae.

15. A wireless device as claimed in claim 14, wherein said antennae are configured as tri-band antennae.