RF radiation redirection away from portable communication device user

• US 9,472,841 B2
• Filed: 11/24/2014
• Issued: 10/18/2016
• Est. Priority Date: 11/06/2008
• Status: Active Grant

• Current Assignee: Penumbra Brands, Inc.
• Original Assignee: Antenna79, Inc.
• Inventors: Wong, Alfred Y., Moreno, Robert, Shields, Karl Richard, Wang, Rong
• Primary Examiner(s): Trinh, Tan H
• Application Number:
  US14/551,775
• Publication Number:
  US 20150077295A1
• Time in Patent Office: 694 Days
• Field of Search: 455/575.7, 455/289, 455/280, 455/575, 455/90, 455/129, 455/562.1, 455/97, 455/550.1, 455/90.3, 455/19, 455/66.1, 455/558, 343/702, 343/700, 343/814, 343/815, 343/841, 343/745, 434/702, 434/841, 434/790
• US Class Current: 1/1
• 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 19/005 Patch antenna using one or more coplanar parasitic elements
• CPC Class Codes: H01Q 19/28 using a secondary device in the form of two or more substantially straight conductive elements log- periodic antennas H01Q11/10; constituting a reflecting surface H01Q19/10
• 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 9/0407 Substantially flat resonant element parallel to ground plane, e.g. patch antenna dipole H01Q9/285; monopole H01Q9/40
• CPC Class Codes: H04B 1/3888 Arrangements for carrying or protecting transceivers

Abstract

A case for a wireless device includes a number of RF coupling elements mounted in the case and configured such that RF radiation is coupled from an internal antenna of the wireless device out of the device to a first RF coupling element, and from the first RF coupling element to a RF redirector coupling element that redirects the RF radiation in a direction outward from said wireless device that is opposite to a user side of the wireless device. A corrugated metallic shield is optionally provided on an opposite side of the case, facing a user of the device.

Claims

1. An apparatus, comprising:

a wireless device having a housing and an internal antenna disposed within an interior of the housing, the housing having a proximal side and a distal side opposite the proximal side;

a first antenna element disposed outside of the interior of the housing and fixedly disposed relative to the distal side of the housing, the internal antenna being between the proximal side of the housing and the first antenna element, the first antenna element configured to be operatively coupled to the internal antenna to receive radiation from the internal antenna when the wireless device is operational; and

a second antenna element fixedly disposed relative to the distal side of the housing, the second antenna element configured to redirect the radiation from first antenna element when the wireless device is operational.

2. The apparatus of claim 1, wherein:

the first antenna element and the second antenna element are mounted on an external surface of the distal side of the housing.

3. The apparatus of claim 1, wherein:

the first antenna element and the second antenna element are mounted on an external surface of the distal side of the housing via an adhesive.

4. The apparatus of claim 1, wherein:

the distal side of the housing includes a first non-conductive material portion and a second non-conductive material portion,

the first antenna element and the second antenna element collectively disposed between the first non-conductive material portion and the second non-conductive material portion.

5. The apparatus of claim 1, wherein:

the first antenna element and the second antenna element are disposed within the distal side of the housing, the first antenna element and the second antenna element are disposed closer to the external surface of the distal side of the housing than an internal surface of the distal side of the housing.

6. The apparatus of claim 1, further comprising:

a third antenna element fixedly disposed relative to the distal side of the housing, the third antenna element configured to redirect the radiation from second antenna element when the wireless device is operational.

7. The apparatus of claim 1, wherein:

an external surface of the distal side of the housing being non-planar,

the first antenna element and the second antenna element being disposed collectively in a non-planar manner and being substantially parallel to the external surface of the distal side of the housing.

8. An apparatus, comprising:

a wireless device having a housing and an internal antenna disposed within an interior of the housing, the housing having a proximal side and a distal side opposite the proximal side; and

a plurality of antenna elements disposed outside of the interior of the housing and fixedly disposed relative to the distal side of the housing, the internal antenna being between the proximal side of the housing and at least one antenna element from the plurality of antenna elements, the plurality of antenna elements configured to be operatively coupled to the internal antenna,

the plurality of antenna elements collectively configured to receive radiation from the internal antenna and redirect the radiation from a user of the wireless device when the wireless device is operational.

9. The apparatus of claim 8, further comprising:

a first non-conductive material layer; and

a second non-conductive material layer,

the plurality of antenna elements collectively disposed between the first non-conductive material layer and the second non-conductive material layer, the second non-conductive material layer fixedly attached to the distal side of the housing.

10. The apparatus of claim 8, wherein:

the plurality of antenna elements include a first antenna element having a loop structure, a second antenna element having a strip structure and a third antenna element having a plate structure.

11. The apparatus of claim 8, wherein:

the plurality of antenna elements include a first antenna element having an irregular shape dimensioned to fit available space on an external surface of the distal side of the housing.

12. The apparatus of claim 8, wherein:

the plurality of antenna elements include a first antenna element, a second antenna element and a third antenna element,

the first antenna element having an irregular shape dimensioned to fit available space on an external surface of the distal side of the housing,

the second antenna element having a loop structure, and

the third antenna element having a strip structure.

13. An apparatus, comprising:

a wireless device having a housing and an internal antenna disposed within the housing, the housing having a proximal side and a distal side opposite the proximal side;

a first antenna element fixedly attached on an external surface of or disposed within the distal side of the housing, the first antenna element configured to be operatively coupled to the internal antenna to receive radiation from the internal antenna when the wireless device is operational; and

a second antenna element fixedly attached on an external surface of or disposed within the distal side of the housing, the second antenna element configured to redirect the radiation from first antenna element when the wireless device is operational.

14. The apparatus of claim 13, wherein:

the first antenna element defines a loop structure, and

the second antenna element defines a loop structure.

15. The apparatus of claim 13, wherein:

the first antenna element defines a loop structure elongate along a first axis, and

the second antenna element defines a loop structure elongate along a second axis substantially parallel to the first axis.

16. The apparatus of claim 13, wherein:

the first antenna element defines a loop structure, and

the second antenna element defines a strip structure.

17. The apparatus of claim 13, wherein:

the first antenna element defines a loop structure elongate along a first axis, and

the second antenna element defines a strip structure elongate along a second axis substantially parallel to the first axis.

18. The apparatus of claim 13, wherein:

the wireless device is elongate along a first axis, and

the first antenna element defines a strip structure elongate along a second axis substantially perpendicular to the first axis.

19. The apparatus of claim 13, wherein:

the wireless device is elongate along a first axis, and

the first antenna element defines a strip structure elongate along a second axis substantially parallel to the first axis.

20. The apparatus of claim 13, wherein:

the first antenna element defines a strip structure elongate along a first axis, and

the second antenna element defines a strip structure elongate along a second axis substantially perpendicular to the first axis.