Single structure multi mode antenna for wireless power transmission incorporating a selection circuit

Patent metadata

Field	Value
Publication number	US-2019097461-A1
Application number	US-201816115224-A
Country	US
Kind code	A1
Filing date	Aug 28, 2018
Priority date	Aug 7, 2015
Publication date	Mar 28, 2019
Grant date	—

Abstract

An electrical system incorporating a single structure multiple mode antenna is described. The antenna is preferably constructed having a first inductor coil that is electrically connected in series with a second inductor coil. The antenna is constructed having a plurality of electrical connections positioned along the first and second inductor coils. A plurality of terminals is connected to the electrical connections that facilitate numerous electrical connections and enables the antenna to be selectively tuned to various frequencies and frequency bands.

First claim

What is claimed is:

1 . An antenna, comprising:
a) a substrate, comprising:
i) a first conductive wire forming a first coil having N 1 number of turns with spaced apart first and second first coil ends, wherein the first coil is capable of generating a first inductance;
ii) a second conductive wire forming a second coil having N 2 number of turns with spaced apart first and second coil second ends, wherein the second coil is capable of generating a second inductance;
iii) at least one terminal electrically connected to at least one of the ends of the first and second coils;
b) a selection circuit electrically connected to the at least one terminal or at least one of the ends of the first and second coils, wherein the selection circuit actively monitors and measures the electrical impedance at the respective antenna connections and combinations thereof; and c) wherein a tunable inductance is generatable by the selection circuit actively connecting and/or disconnecting various regions or specific locations along the coils.

2 . The antenna of claim 1 further comprising a second terminal and a third terminal, wherein the second terminal electrically connects to the first or second end of the second coil and a third terminal electrically connects along either of the first or second coils.

3 . The antenna of claim 2 wherein a tunable inductance or frequency is generatable by selecting a connection between two of the first, second and third terminals.

4 . The antenna of claim 1 , wherein the selection circuit is an electrical switch circuit.

5 . The antenna of claim 4 wherein the electrical switch circuit detects and analyzes the electrical impedance of either or combination thereof of the first and second coils.

6 . The antenna of claim 5 wherein an operating frequency of either or combination thereof of the first and second coils is selected based on the electrical impedance value.

7 . The antenna of claim 1 wherein the selection circuit connections generate an inductance value at a desired operating frequency or frequencies.

8 . The antenna of claim 4 wherein the electrical switch circuit is electrically connected in series between the first and second coils.

9 . The antenna of claim 4 wherein the electrical switch circuit selects a connection between the first or second coils, or selects either of the first or second coils individually.

10 . The antenna of claim 4 wherein the electrical switch circuit at least one capacitor having a first capacitance.

11 . The antenna of claim 1 wherein the selection circuit further electrically connects to the second and third terminals, wherein actuation of the selection circuit electrically connects two of the three terminal ends so that an operating frequency is modified.

12 . The antenna of claim 1 wherein the selection circuit comprises at least one of an electrical component selected from the group consisting of a resistor, a capacitor, and an inductor.

13 . The antenna of claim 2 wherein the third terminal is electrically connected to an electrical switch circuit comprising at least one capacitor, wherein the electrical switch circuit is electrically connected to the second end of the first coil and the first end of the second coil, and wherein actuation of the electrical switch electrically connects two of the three antenna terminal ends so that an operating frequency is modified.

14 . The antenna of claim 1 wherein each terminal has a terminal lead portion that extends between a coil connection point and a terminal end, the coil connection point electrically connected to either of the first and second conductive wires of the first and second coils, respectively.

15 . The antenna of claim 14 wherein the terminal lead portion further extends over at least a portion of either of the first and second conductive wires of the first and second coils, respectively.

16 . The antenna of claim 1 wherein an electrical signal is selected from the group consisting of a data signal, an electrical voltage, an electrical current, and combinations thereof is receivable by at least the first and second coils.

17 . The antenna of claim 1 wherein an electrical signal is selected from the group consisting of a data signal, an electrical voltage, an electrical current, and combinations thereof is transmittable by at least the first and second coils.

18 . The antenna of claim 1 wherein the substrate material is composed of an electrically insulative materials selected from the group consisting of a polyimide, an acrylic, fiberglass, polyester, polyether imide, polytetrafluoroethylene, polyethylene, polyetheretherketone (PEEK), polyethylene napthalate, fluropolymers, copolymers, a ceramic material, a ferrite material, and combinations thereof.

19 . The antenna of claim 1 , wherein the antenna is capable of receiving or transmitting within a frequency band selected from the group consisting of about 100 kHz to about 250 kHz, about 250 kHz to about 500 kHz, 6.78 MHz, 13.56 MHz, and combinations thereof.

20 . The antenna of claim 1 wherein the antenna is capable of receiving or transmitting at frequencies of at least 100 kHz.

Assignees

• Nucurrent Inc

Inventors

• Singh Vinit
• Peralta Alberto
• Rajagopalan Ajit
• Luzinski Jason
• Babcock Jacob
• Frysz Christine A

Classifications

• H02J50/10

  using inductive coupling · CPC title

• H01F38/14

  Inductive couplings {(for wireless supply or distribution of electric power using inductive coupling H02J50/10)} · CPC title

• H02J50/12 Primary

  of the resonant type · CPC title

• H01F27/38

  Auxiliary core members; Auxiliary coils or windings · CPC title

• H01F29/02

  with tappings on coil or winding; with provision for rearrangement or interconnection of windings · CPC title