Device for reflecting microwave waves in wave cancelling interference patterns

• US 9,379,757 B2
• Filed: 05/22/2014
• Issued: 06/28/2016
• Est. Priority Date: 05/22/2013
• Status: Active Grant

• Current Assignee: Green Swan Incorporated
• Original Assignee: Green Swan Incorporated
• Inventors: Lehmann, Harry V
• Primary Examiner(s): Urban, Edward
• Assistant Examiner(s): Justus, Ralph H
• Application Number:
  US14/285,556
• Publication Number:
  US 20150311936A1
• Time in Patent Office: 768 Days
• Field of Search: 455/575.5, 455/300, 455/304
• US Class Current: 1/1
• CPC Class Codes: H01L 23/552 Protection against radiation, e.g. light or electromagnetic waves
• 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: H04M 1/0202 Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets constructional features of telephone transmitters or receivers, e.g. of speakers or microphones H04M1/03

Abstract

a radio case device intended for use upon, or integrated into, a cellular smart phone device. The installation of a stacked tubular or semi-tubular circumferential reflective elements within the top of the case of such case device results in overlapping omnidirectional reflected time phased re-broadcast of received signal of origin from the microwave or radio device. The re-broadcast signals or reflected signals provide a circumferential omnidirectional signal reflections from differing levels of depth (and accordingly differing distances from signal source) with fractal subdivisions from each depth of element. This creates multiple, interactive, layered and fractal interference patterns, resulting in reduced signal penetration in the area of the end user'"'"'s body and head).

Claims

1. A method for attenuating the communication signals transmitted from a mobile device'"'"'s antenna in the proximity of the mobile device'"'"'s ear piece, the method comprising:

determining the position of the antenna;

determining the position of the ear piece relative to the antenna;

determining a phase shift required to create destructive interference with the communication signal at a position proximate the ear piece;

positioning a reflector such that the propagation of the communication signal to the reflector and the propagation of a reflected communication signal from the reflector to the position proximate the ear piece results in the phase difference between the communication signal and the reflected communication signal at the position proximate the ear piece;

wherein the reflector is attached to the mobile device;

wherein the phase difference is (2n−

1)λ

/2, where n is an integer.

2. The method of claim 1, the reflector is semi-tubular.

3. The method of claim 1, wherein the reflector is tubular.

4. The method of claim 1, wherein the reflector is attached to the mobile device via a case.

5. The method of claim 1, wherein the reflector comprises a plurality of reflectors.

6. The method of claim 5, further comprising a plurality of positions proximate the ear piece and wherein each of the plurality of the reflector is associated with a respective one of the plurality of positions proximate the ear piece.

7. The method of claim 1 wherein the reflector is integrated in the mobile device.

8. The method of claim 1, wherein the reflector is removably attached.

9. The method of claim 1, wherein the position of the reflector is determined according to the following function:

(D₁+D₂−

D₃)=(2n−

1)λ

/2

where D₁ is the distance between the antenna and the reflector, D₂ is the distance between the reflector and the position proximate the ear piece;

D₃ is the distance between the antenna and the position proximate the ear piece;

λ

, is the wavelength of communication signal and n is a positive integer and wherein D₁ D₂ and D₃ are within a common plane.

10. A method for attenuating the communication signals transmitted from a mobile device'"'"'s antenna in the proximity of the mobile device'"'"'s ear piece, the method comprising:

determining the position of the antenna;

determining the position of the ear piece relative to the antenna;

determining a phase shift required to create destructive interference with the communication signal at a position proximate the ear piece;

positioning a reflector such that the propagation of the communication signal to the reflector and the propagation of a reflected communication signal from the reflector to the position proximate the ear piece results in the phase difference between the communication signal and the reflected communication signal at the position proximate the ear piece;

wherein the reflector is attached to the mobile device;

wherein the phase difference is (2n−

1)λ

/2, where n is an integer

wherein the reflector comprises a plurality of reflectors;

a plurality of positions proximate the ear piece and wherein each of the plurality of the reflector is associated with a respective one of the plurality of positions proximate the ear piece;

further comprising positioning each of the plurality of reflectors such that the propagation of the communication signal to each respective reflector and the propagation of a respective reflected communication signal from the respective one of the plurality of reflectors to the respective position proximate the ear piece results the phase difference between the communication signal and the reflected communication signal at each of the respective positions proximate the ear piece.

11. A mobile device comprising

an antenna;

a transmitter operably connected to the antenna;

an ear piece;

wherein the ear piece is positioned proximate a user'"'"'s ear when in the mobile device is in use;

a reflector positioned at predetermined location relative to the ear piece and the antenna;

wherein the predetermined location is a function of the position of the antenna, the ear piece and the frequency band of the radio transceiver;

wherein the function of the position of the antenna, the ear piece and the frequency band of the radio transceiver is governed by;

(D₁+D₂−

D₃)=(2n−

1)λ

/2

where D₁ is the distance between the antenna and the reflector, D₂ is the distance between the reflector and the position proximate the ear piece;

D₃ is the distance between the antenna and the position proximate the ear piece;

λ

is the wavelength of communication signal and n is a positive integer and wherein D₁ D₂ and D₃ are within a common plane.

12. The device of claim 11, the reflector is semi-tubular.

13. The mobile device of claim 11, wherein the reflector is tubular.

14. The mobile device of claim 11, wherein the reflector is attached to the mobile device via a case.

15. The mobile device of claim 11, wherein the reflector comprises a plurality of reflectors.

16. The mobile device of claim 11 wherein the reflector is integrated in the mobile device.

17. The mobile device of claim 11, wherein the reflector is removably attached.