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US 8,482,157 B2Granted
Increasing the Q factor of a resonator
AssigneeQUALCOMM Incorporated
InventorsNigel Cook, Lukas Sieber, Hanspeter Widmer
Life of this patent
Estimating the term…
Abstract
A wireless powering and charging system is described. The antennas can be high q loop antennas. The antennas can use coupling between a first part and a second part.
Claims93
A transmitter system for transmitting electrical power via a wireless field, comprising:
- a source configured to produce an output electrical signal having a first frequency;
- a non-resonant coupling part, physically connected to said source, said coupling part including a first loop of wire;
- and
- a resonant antenna part, spaced from said coupling part such that said antenna part is galvanically isolated from said coupling part and is magnetically coupled to said coupling part, said antenna part configured to receive power wirelessly from said coupling part, and said antenna part configured to produce an electromagnetic field based on said power that is wirelessly received, said antenna part comprising a capacitor integrated thereon, and said antenna part configured to resonate at said first frequency.
1 more element
A system for transmitting electrical power via a wireless field, comprising:
- a source configured to produce an output electrical signal having a first frequency;
- an antenna part configured to create an electromagnetic field based on said power that is wirelessly received, said antenna part comprising a capacitor integrated thereon, said antenna part being substantially resonant at said first frequency;
- and
- a receiver configured to receive the electrical power, where the receiver includes:
- a resonant antenna that is tuned to said first frequency;
- and
- a non-resonant coupling part, spaced from said antenna, such that said coupling part is galvanically isolated from said antenna and is magnetically coupled to said antenna, said coupling part configured to receive a signal having said first frequency from said antenna, and said coupling part configured to produce a power output based on the received signal.
4 more elements
A receiver system for receiving electrical power via an electromagnetic field, comprising:
- a resonant antenna part, configured to receive power via the electromagnetic field, said antenna part comprising a capacitor integrated thereon, the antenna part being substantially resonant at a first frequency;
- and
- a non-resonant coupling part, spaced from said antenna part, such that said coupling loop is galvanically isolated from said antenna part and is magnetically coupled to said antenna part, said coupling part configured to receive a signal having said first frequency from said antenna part, and said coupling part configured to produce a power output based on the received signal.
A method, comprising:
- producing a magnetic field at a first frequency based on applied power using a non-resonant loop antenna;
- and
- coupling a portion of the power, via a wireless field, between said non-resonant loop antenna and a resonant loop antenna that is gavanically isolated from said non-resonant loop antenna and magnetically coupled to the non-resonant loop antenna, where said resonant loop antenna comprises a capacitor integrated thereon, and where said resonant loop antenna has a resonant value at said first frequency.
A method, comprising:
- receiving power via an electromagnetic field at a first frequency based on applied power using a resonant loop antenna comprising a capacitor integrated thereon, from a non-resonant loop antenna that is associated with said resonant loop antenna, and where said resonant loop antenna and said non-resonant loop antenna are galvanically isolated from one another, and where said non-resonant loop antenna has no separate capacitor attached thereto, and where said non-resonant loop antenna is configured to receive a signal having said first frequency from said resonant loop antenna;
- and
- transmitting a portion of the power received via the electromagnetic field between said resonant loop antenna and said non-resonant loop antenna;
- and
- rectifying an output from said non-resonant loop antenna to produce a DC output.
2 more elements
A transmitter system for transmitting electrical power via a wireless field, comprising:
- a source configured to produce an output electrical signal having a first frequency;
- a non-resonant coupling part, physically connected to said source, said coupling part comprising multiple loops of wire;
- and
- a resonant antenna part, spaced from said coupling part such that said antenna part is galvanically isolated from said coupling part and is magnetically coupled to said coupling part, said antenna part receiving power wirelessly from said coupling part, and said antenna part producing an electromagnetic field based on said power that is wirelessly received, said antenna part comprising a capacitor integrated thereon, and said antenna part configured to resonate at said first frequency.
1 more element
A receiver system for receiving electrical power via an electromagnetic field, comprising:
- a resonant antenna part, configured to receive power via the electromagnetic field, said antenna part comprising a capacitor integrated thereon and configured to be substantially resonant with a first frequency;
- and
- a non-resonant coupling part, spaced from said antenna part, such that said coupling part is galvanically isolated from said antenna part and is magnetically coupled to said antenna part, said coupling part formed of multiple turns of wire, and said coupling part configured to receive a signal having said first frequency from said antenna part, and producing a power output based on the received signal.
A method, comprising:
- producing a magnetic field at a first frequency based on applied power using a non-resonant loop antenna formed of multiple loops of wire, the non-resonant loop antenna including no separate capacitor attached thereto;
- and
- coupling a portion of the power, via a wireless field, between said non-resonant loop antenna and a resonant loop antenna associated with the non-resonant loop antenna, where said resonant loop antenna comprising a capacitor integrated thereon, and where said resonant loop antenna has a resonant value at said first frequency.
A wireless electrical power system, comprising:
- a transmitter, comprising:
- a source configured to produce an output electrical signal having a first frequency,
- a non-resonant coupling part, physically connected to said source, said coupling part comprising a first loop of wire, and
- a non-resonant antenna part spaced from said coupling part such that said antenna part is galvanically isolated from said coupling part and is magnetically coupled to said coupling part, said antenna part wirelessly receiving power from said coupling part and said antenna part producing an electromagnetic field based on said power that is wirelessly received, said antenna part comprising a capacitor integrated thereon, and said antenna part having an LC value which is substantially resonant with said first frequency;
- and
- a receiver configured to receive the electrical power, where the receiver includes an antenna that is tuned to said first frequency,
- wherein the receiver has a quality factor value that is lower than a quality factor value of the transmitter.
4 more elements
A system for transmitting power, comprising:
- a source configured to produce an output electrical signal having a first frequency;
- a resonant antenna part configured to produce an electromagnetic field for transferring power to a receiver, the antenna part having a capacitor integrated thereon, the antenna part configured to resonate at said first frequency;
- and
- non-resonant means for receiving the output electrical signal from the source and transferring power to the antenna part, via an electromagnetic field, the means for receiving the output electrical signal being physically connected to the source and magnetically coupled to the antenna part.
1 more element
A system for receiving power comprising:
- a resonant antenna part configured to receive power, via an electromagnetic field, at a first frequency, the antenna part configured to resonate at said first frequency;
- non-resonant means for receiving power, via an electromagnetic field at said first frequency, from the antenna part, the means for receiving power configured to be magnetically coupled with the antenna part;
- and
- means for rectifying an output received from the means for receiving power to produce a DC output.
1 more element
Dependencies are inferred from the claim text.