Auxiliary electronic element, wireless communication device, and method for managing the length of a set of one or more conductors

Patent metadata

Field	Value
Publication number	US-10084232-B1
Application number	US-201715652988-A
Country	US
Kind code	B1
Filing date	Jul 18, 2017
Priority date	Jul 18, 2017
Publication date	Sep 25, 2018
Grant date	Sep 25, 2018

Abstract

The present application is directed to managing the length of a set of one or more conductors in an auxiliary electronic element, which is coupled to a wireless communication device. The auxiliary electronic element includes the set of one or more conductors coupled to and extending away from main internal electronic circuitry of the auxiliary electronic element, the main internal electronic circuitry supporting and controlling at least some of the operation of the auxiliary electronic element. The set of one or more conductors extends through an area proximate to at least one of one or more antennas of the wireless communication device a predetermined adjusted length away from the main internal electronic circuitry, in which the at least one of one or more antennas of the wireless communication device supports a wireless communication connection with another wireless communication device. The predetermined adjusted length of the set of one or more conductors is selected so as to match a one quarter length of a longest wavelength of one or more frequencies of the wireless communication connection associated with the at least one of the one or more antennas, which are affected by the set of one or more conductors of the auxiliary electronic element extending through the area proximate thereto.

First claim

What is claimed is:

1. An auxiliary electronic element for coupling to a wireless communication device, the auxiliary electronic element comprising:
main internal electronic circuitry for supporting and controlling at least some of the operation of the auxiliary electronic element;
a set of one or more conductors coupled to and extending away from the main internal electronic circuitry of the auxiliary electronic element, where the set of one or more conductors extends through an area proximate to at least one of one or more antennas of the wireless communication device a predetermined adjusted length away from the main internal electronic circuitry, when the auxiliary electronic device is coupled to the wireless communication device, the at least one of one or more antennas of the wireless communication device supporting a wireless communication connection with another wireless communication device; and
wherein the predetermined adjusted length of the set of one or more conductors is selected so as to match a one quarter length of a longest wavelength of one or more frequencies of the wireless communication connection associated with the at least one of the one or more antennas, which are affected by the set of one or more conductors of the auxiliary electronic element extending through the area proximate thereto.

2. An auxiliary electronic element in accordance with claim 1 , further comprising additional electronic circuitry separate from the main internal electronic circuitry, where the set of one or more conductors of the auxiliary electronic element couples the separate additional electronic circuitry to the main internal electronic circuitry.

3. An auxiliary electronic element in accordance with claim 2 , wherein the separate additional electronic circuitry of the auxiliary electronic element extends beyond a portion of an outline of the wireless communication device, when the auxiliary electronic element is coupled to the wireless communication device.

4. An auxiliary electronic element in accordance with claim 3 , wherein the at least one of the one or more antennas of the wireless communication device is located proximate to the portion of the outline of the wireless communication device, that the separate additional electronic circuitry of the auxiliary electronic element extends beyond.

5. An auxiliary electronic element in accordance with claim 4 , wherein the portion of the outline of the wireless communication device corresponds to a top of the wireless communication device.

6. An auxiliary electronic element in accordance with claim 1 , wherein the auxiliary electronic element is at least one of a peripheral and an accessory.

7. An auxiliary electronic element in accordance with claim 1 , wherein the set of one or more conductors is included as part of a flexible circuit substrate.

8. An auxiliary electronic element in accordance with claim 1 , wherein the one or more frequencies of the wireless communication connection associated with the at least one of the one or more antennas, which are affected by the set of one or more conductors include at least a pair of affected frequencies, where a shortest wavelength of the at least pair of affected frequencies is used to determine a location of a ground connection for the set of one or more conductors, where the location of the ground connection is one quarter of the wavelength of the shortest wavelength measured from the area proximate to the at least one of the one or more antennas through which the set of one or more conductors extends, toward the coupled end associated with the internal electronic circuitry, and where the ground connection is made via a selective signal frequency shorting circuit, which is tuned to the frequency from the at least pair of affected frequencies having the shortest wavelength.

9. An auxiliary electronic element in accordance with claim 8 , wherein the selective signal frequency shorting circuit appears to have a short to ground at the affected frequency having the shortest wavelength, while appearing to be an open circuit or have a high impedance at other frequencies.

10. An auxiliary electronic element in accordance with claim 8 , wherein the selective signal frequency shorting circuit is a series resonant circuit.

11. An auxiliary electronic element in accordance with claim 10 , wherein the series resonant circuit is an LC tank circuit.

12. An auxiliary electronic element in accordance with claim 8 , wherein the selective signal frequency shorting circuit is an open transmission line stub.

13. An auxiliary electronic element in accordance with claim 1 , wherein the one or more frequencies of the wireless communication connection associated with the at least one of the one or more antennas, which are affected by the set of one or more conductors include at least a pair of affected frequencies in addition to the affected frequency having the longest wavelength, where each of the shorter wavelengths of the at least pair of additional affected frequencies is used to determine a respective location of a ground connection for the set of one or more conductors, where the respective locations of the ground connections are each one quarter of the wavelength of the respective additional affected frequencies measured from the area proximate to the at least one of the one or more antennas through which the set of one or more conductors extends, toward the coupled end associated with the internal electronic circuitry, and where the ground connections are made via respective selective signal frequency shorting circuits, each tuned to the corresponding respective additional affected frequency.

14. An auxiliary electronic element in accordance with claim 13 , wherein each of the respective selective signal frequency shorting circuits are tuned so as to appear to have a short to ground at the associated respective affected frequency, while appearing to be an open circuit or have a high impedance at frequencies other than the associated respective affected frequency.

15. In an auxiliary electronic element for selectively coupling to a wireless communication device, where the auxiliary electronic element includes main internal circuitry and a set of one or more conductors extending from the main internal circuitry, the set of one or more conductors also extending through an area proximate to at least one of one or more antennas of the wireless communication device, when the auxiliary electronic element is coupled to the wireless communication device, a method for managing the length of the set of one or more conductors, the method comprising:
identifying one or more frequencies of a wireless communication connection associated with the at least one of the one or more antennas that are affected by the set of one or more conductors extending through an area proximate to the at least one of the one or more antennas;
determining a quarter wavelength of the affected one or more frequencies having the longest wavelength;
adjusting the length of the set of one or more conductors, such that the distance between the area proximate to the at least one of the one or more antennas through which the set of one or more conductors extends there through and the connection to the main internal circuitry is equivalent to the determined quarter wavelength.

16. A method in accordance with claim 15 , wherein the one or more identified frequencies of the wireless communication connection associated with the at least one of the one or more antennas, which are affected by the set of one or more conductors include at least a pair of affected frequencies, where

Assignees

• Motorola Mobility Llc

Inventors

• Sayem Abu
• Krenz Eric

Classifications

• H01Q1/521 Primary

  reducing the coupling between adjacent antennas · CPC title

• H01Q5/392

  the parasitic elements having dual-band or multi-band characteristics · CPC title

• H01Q1/243 Primary

  with built-in antennas · CPC title

• H01Q21/065

  Patch antenna array · CPC title

• H01Q5/321

  within a radiating element or between connected radiating elements · CPC title