Antenna apparatuses and approaches therefor
First Claim
Patent Images
1. An apparatus comprising:
- a receiver circuit configured and arranged to output power using energy from a radio frequency (RF) signal received across respective terminals at a first frequency;
a near-field communication (NFC) circuit configured and arranged to communicate via NFC signals via respective terminals at a second frequency that is different than the first frequency;
a first antenna having windings connected in series with the terminals of the receiver circuit, the first antenna being configured and arranged to collect the RF signal at the first frequency and present the RF signal to the receiver circuit; and
a second antenna having;
a first set of windings connected to a first one of the terminals of the NFC circuit and to one of the windings of the first antenna,a second set of windings connected to a second one of the terminals of the NFC circuit and to another one of the windings of the first antenna, andthe first and second sets of windings and the windings of the first antenna to which the first and second sets of windings being connected in series between the terminals of the NFC circuit and configured and arranged to communicate the NFC signals with the NFC circuit at the second frequency,wherein the receiver circuit is configured and arranged to output the power by rectifying and regulating power from the RF signal received across the terminals.
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Abstract
Aspects of the present disclosure are directed to an antenna, various implementations and methods therefor. Various embodiments are amenable to implementation with a receiver circuit that harvests power using energy from a radio frequency (RF) signal received, and a near-field communication (NFC) circuit. A first antenna collects and presents the RF signal to the receiver circuit, and a second antenna communicates NFC signals for the NFC circuit using an antenna portion shared with the first antenna.
12 Citations
20 Claims
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1. An apparatus comprising:
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a receiver circuit configured and arranged to output power using energy from a radio frequency (RF) signal received across respective terminals at a first frequency; a near-field communication (NFC) circuit configured and arranged to communicate via NFC signals via respective terminals at a second frequency that is different than the first frequency; a first antenna having windings connected in series with the terminals of the receiver circuit, the first antenna being configured and arranged to collect the RF signal at the first frequency and present the RF signal to the receiver circuit; and a second antenna having; a first set of windings connected to a first one of the terminals of the NFC circuit and to one of the windings of the first antenna, a second set of windings connected to a second one of the terminals of the NFC circuit and to another one of the windings of the first antenna, and the first and second sets of windings and the windings of the first antenna to which the first and second sets of windings being connected in series between the terminals of the NFC circuit and configured and arranged to communicate the NFC signals with the NFC circuit at the second frequency, wherein the receiver circuit is configured and arranged to output the power by rectifying and regulating power from the RF signal received across the terminals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An apparatus comprising:
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a receiver circuit configured and arranged to output power using energy from a radio frequency (RF) signal received across respective terminals at a first frequency; a near-field communication (NFC) circuit configured and arranged to communicate via NFC signals via respective terminals at a second frequency that is different than the first frequency; a first antenna having windings connected in series with the terminals of the receiver circuit, the first antenna being configured and arranged to collect the RF signal at the first frequency and present the RF signal to the receiver circuit; and a second antenna having; a first set of windings connected to a first one of the terminals of the NFC circuit and to one of the windings of the first antenna, a second set of windings connected to a second one of the terminals of the NFC circuit and to another one of the windings of the first antenna, and the first and second sets of windings and the windings of the first antenna to which the first and second sets of windings being connected in series between the terminals of the NFC circuit and configured and arranged to communicate the NFC signals with the NFC circuit at the second frequency, wherein the first antenna is configured and arranged to couple energy from the RF signal to the receiver circuit by flowing current through the windings of the first antenna in a first direction, wherein the second antenna is configured and arranged to collect and couple the NFC signals to the NFC circuit by flowing current through the windings of the first antenna to which the first and second sets of windings are connected in a second direction that is opposite the first direction. - View Dependent Claims (14, 15, 16)
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17. An apparatus comprising:
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a receiver circuit configured and arranged to output power using energy from a radio frequency (RF) signal received across respective terminals at a first frequency; a near-field communication (NFC) circuit configured and arranged to communicate via NFC signals via respective terminals at a second frequency that is different than the first frequency; a first antenna having windings connected in series with the terminals of the receiver circuit, the first antenna being configured and arranged to collect the RF signal at the first frequency and present the RF signal to the receiver circuit; and a second antenna having; a first set of windings connected to a first one of the terminals of the NFC circuit and to one of the windings of the first antenna, a second set of windings connected to a second one of the terminals of the NFC circuit and to another one of the windings of the first antenna, and the first and second sets of windings and the windings of the first antenna to which the first and second sets of windings being connected in series between the terminals of the NFC circuit and configured and arranged to communicate the NFC signals with the NFC circuit at the second frequency, wherein the receiver circuit is a wireless power circuit configured and arranged to utilize the first antenna as a transformer winding to receive wireless power from a remote wireless power source that transmits the RF signal to the first antenna. - View Dependent Claims (18, 19, 20)
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Specification