Reconfigurable radiation densensitivity bracket systems and methods

• US 8,237,620 B2
• Filed: 02/01/2010
• Issued: 08/07/2012
• Est. Priority Date: 04/11/2001
• Status: Expired due to Fees

• Current Assignee: Kyocera Corporation
• Original Assignee: Kyocera Corporation
• Inventors: Poilasne, Gregory, Fabrega-Sanchez, Jorge
• Primary Examiner(s): PHAN, THO GIA
• Application Number:
  US12/698,091
• Publication Number:
  US 20100127950A1
• Time in Patent Office: 918 Days
• Field of Search: 343/700, 343/829, 343/846, 343/904
• US Class Current: 343/846
• CPC Class Codes: H01G 7/06 having a dielectric selected for the variation of its permittivity with applied voltage, i.e. ferroelectric capacitors electrets H01G7/02
• CPC Class Codes: H01P 1/203 Strip line filters
• CPC Class Codes: H01P 1/20336 Comb or interdigital filters
• CPC Class Codes: H01P 1/213 combining or separating two or more different frequencies H01P1/215 takes precedence
• CPC Class Codes: H01P 5/04 with variable factor of coupling
• CPC Class Codes: H01Q 1/00 Details of, or arrangements associated with, antennas arrangements for varying orientation of directional pattern H01Q3/00
• CPC Class Codes: H01Q 1/241 used in mobile communications, e.g. GSM H01Q1/247, H01Q1/248 take precedence
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H01Q 1/48 Earthing means; Earth screens; Counterpoises
• CPC Class Codes: H01Q 1/52 Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure absorbing means H01Q17/00
• CPC Class Codes: H01Q 13/02 Waveguide horns
• CPC Class Codes: H01Q 13/06 Waveguide mouths horns H01Q13/02
• CPC Class Codes: H01Q 13/203 Leaky coaxial lines
• CPC Class Codes: H01Q 3/44 varying the electric or magnetic characteristics of reflecting, refracting, or diffracting devices associated with the radiating element
• 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: H01Q 9/0421 with a shorting wall or a shorting pin at one end of the element H01Q9/0414 takes precedence
• CPC Class Codes: H01Q 9/0442 with particular tuning means
• CPC Class Codes: H01Q 9/16 with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole H01Q9/44 takes precedence
• CPC Class Codes: H01Q 9/28 Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines waveguide horns or mouths H01Q13/00; slot antennas H01Q13/00
• CPC Class Codes: H01Q 9/30 with feed to end of elongated active element, e.g. unipole H01Q9/44 takes precedence
• CPC Class Codes: H03B 5/1841 : the frequency-determining element being a strip line resonator H03B5/1805, H03B5/1817, H03B5/1864 and H03B5/1882 take precedence
• CPC Class Codes: H03B 5/362 : the amplifier being a single transistor H03B5/364 - H03B5/368 take precedence
• CPC Class Codes: H03F 1/56 : Modifications of input or output impedances, not otherwise provided for
• CPC Class Codes: H03F 3/191 : Tuned amplifiers H03F3/193, H03F3/195 take precedence
• CPC Class Codes: H03H 7/20 : Two-port phase shifters providing an adjustable phase shift
• CPC Class Codes: H03J 5/246 : using electronic means H03J5/244 takes precedence
• CPC Class Codes: H03L 1/022 : by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature H03L1/021 takes precedence
• CPC Class Codes: H03L 7/18 : using a frequency divider or counter in the loop H03L7/20, H03L7/22 take precedence
• CPC Class Codes: H04B 1/30 : for homodyne or synchrodyne receivers demodulator circuits H03D1/22

Abstract

A method and device bracket are presented for reconfigurable radiation desensitivity. The method includes: accepting a radiated wave from a source such as a transmitter, antenna, microprocessor, electrical component, integrated circuit, camera, connector, or signal cable; in response to the radiated wave, creating a first current per units square (I/units²) through a groundplane of an electrical circuit such as a printed circuit board (PCB), display, connector, or keypad; accepting a control signal; and, in response to the control signal, creating a second I/units² through the groundplane. This step couples the groundplane to a bracket having a selectable effective electrical length. Typically, the groundplane is coupled to a bracket with a fixed physical length section to provide a combined effective electrical length responsive to the fixed physical length and the selectable effective electrical length. The coupling mechanism can result from transistor coupling, p/n junction coupling, selectable capacitive coupling, or mechanically bridging.

Claims

1. A method for reconfigurable radiation desensitivity, the method comprising:

accepting a radiated wave;

in response to the radiated wave, creating a first current per units square (I/units²) through a groundplane of an electrical circuit;

accepting a control signal; and

,

in response to the control signal, creating a second I/units²through the groundplane, different from the first I/units², wherein creating the second I/units² comprises coupling the groundplane to a bracket having a selectable effective electrical length and comprising a fixed physical length section and a plurality of selectable electrical length sections.

2. The method of claim 1 wherein creating a first I/units² through the groundplane of an electrical circuit includes creating a first I/units² through a groundplane of an electrical circuit selected from the group including components mounted on a printed circuit board (PCB), display, connector, and keypad.

3. The method of claim 1 wherein accepting a radiated wave includes accepting a radiated wave from a source selected from the group including a transmitter, antenna, microprocessor, electrical component, integrated circuit, camera, connector, and signal cable.

4. The method of claim 1 wherein coupling the groundplane to the bracket having the selectable effective electrical length comprises coupling the groundplane to the bracket to provide a combined effective electrical length responsive to the fixed physical length and a selected electrical length.

5. The method of claim 1 wherein coupling the groundplane to a bracket with a plurality of selectable electrical length sections includes connecting the plurality of selectable electrical length sections in a configuration selected from the group including connected to the groundplane, series-connected, parallel-connected, and combinations of the above-mentioned connection configurations.

6. The method of claim 1 wherein coupling the groundplane to a bracket having a selectable effective electrical length includes coupling the groundplane to a bracket with a plurality of fixed physical length sections.

7. The method of claim 6 wherein coupling the groundplane to a bracket with a plurality of fixed physical length sections includes connecting the plurality of fixed electrical length sections to a selectable electrical length section in a configuration selected from the group including connected to the groundplane, series-connected, parallel-connected, and combinations of the above-mentioned connection configurations.

8. The method of claim 1 wherein coupling the groundplane to a bracket having a selectable effective electrical length includes coupling through a mechanism selected from the group including transistor coupling, p/n junction coupling, selectable capacitive coupling, variable gap coupling, and mechanically bridging.

9. A method comprising:

in response to a control signal, redistributing a radiation-induced current distribution through a groundplane by coupling the groundplane to a bracket having a selectable electrical length and comprising a fixed electrical length section and a plurality of selectable electrical lengths sections.

10. The method of claim 9, wherein the radiation-induced current results from radiation of a source selected from the group including a transmitter, antenna, microprocessor, electrical component, integrated circuit, camera, connector, and signal cable.

11. The method of claim 9, wherein the groundplane is a groundplane of an electrical circuit selected from the group including components mounted on a printed circuit board (PCB), display, connector, and keypad.

12. The method of claim 9 wherein coupling the groundplane to the bracket comprises coupling the groundplane to the bracket to provide a combined effective electrical length responsive to the fixed physical length and a selected electrical length.

13. The method of claim 9, wherein coupling the groundplane to a bracket comprises connecting at least some of the plurality of selectable electrical length sections in connections including series-connections, parallel-connections, connections to the groundplane and all combinations thereof.

14. The method of claim 9 wherein coupling the groundplane to a bracket having a selectable effective electrical length includes coupling the groundplane to a bracket with a plurality of fixed physical length sections.

15. The method of claim 14 wherein coupling the groundplane to a bracket with a plurality of fixed physical length sections includes connecting the plurality of fixed electrical length sections to a selectable electrical length section in a configuration selected from the group including connected to the groundplane, series-connected, parallel-connected, and combinations thereof.

16. The method of claim 9 wherein coupling the groundplane to a bracket having a selectable effective electrical length includes coupling through a mechanism selected from the group including transistor coupling, p/n junction coupling, selectable capacitive coupling, variable gap coupling, and mechanically bridging.

17. The method of claim 9, wherein the radiation-induced current distribution is a first current per area distribution through the groundplane and wherein redistributing the radiation-induced current distribution comprises causing a second current per area distribution through the groundplane.