ANTENNA APPARATUSES AND APPROACHES THEREFOR
First Claim
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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.
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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.
7 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. - 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 first antenna having windings connected in series with a first set of terminals, the first antenna being configured and arranged to collect a radio frequency (RF) signal at a first frequency and to present the RF signal at the first frequency via the first set of terminals; and a second antenna having windings connected in series with a second set of terminals, the second antenna being configured and arranged to collect an RF signal at a second frequency that is different than the first frequency and to present the RF signal at the second frequency via the second set of terminals, the windings of the second antenna including; a first set of windings connected to a first one of the second set of terminals, a second set of windings including a subset of the windings of the first antenna connected to the first set of windings, and a third set of windings connected to the second set of windings and to a second one of the second set of terminals, the first, second and third sets of windings being connected in series with the second set of terminals and forming a circuit path therebetween. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A method comprising:
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providing a first antenna having windings connected in series with a first set of terminals of a first receiver circuit, the first antenna being configured and arranged to collect a radio frequency (RF) signal at a first frequency and to present the RF signal via the first set of terminals; utilizing a second antenna having windings connected in series with a second set of terminals of a second receiver circuit, collecting an RF signal at a second frequency that is different than the first frequency and presenting the RF signal at the second frequency via the second set of terminals, the windings of the second antenna including; a first set of windings connected to a first one of the second set of terminals, a second set of windings including a subset of the windings of the first antenna connected to the first set of windings, and a third set of windings connected to the second set of windings and to a second one of the second set of terminals, the first, second and third sets of windings being connected in series with the second set of terminals and forming a circuit path therebetween; and while collecting the RF signal at the second frequency, utilizing the second antenna to RF decouple the first receiver circuit from the second antenna. - View Dependent Claims (20)
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Specification