NFC reader with remote antenna
First Claim
1. A near field communication (NFC) reader comprising,a first section;
- a second section;
wherein the first section includesan NFC controller;
a filter coupled to the NFC controller, wherein the filter includes a filter capacitor;
a first tuning circuit coupled to the filter, wherein the first tuning circuit includes a tuner capacitor that is electrically coupled in parallel to the filter capacitor, wherein the first tuning circuit includes a first cable connector adapted to receive a first end of a coaxial cable;
wherein the second section includesa second tuning circuit, wherein the second tuning circuit includes a second tuner capacitor and a damping resistor, wherein the second tuning circuit includes a second cable connector adapted to receive a second end of the coaxial cable; and
an antenna coupled to the second tuning circuit.
1 Assignment
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Accused Products
Abstract
A near field communication (NFC) reader is disclosed. The NFC reader includes a first section. The first section includes an NFC controller and a filter coupled to the NFC controller. The filter includes a filter capacitor. The first section further includes a first tuning circuit coupled to the filter. The first tuning circuit includes a tuner capacitor that is electrically coupled in parallel to the filter capacitor. The first tuning circuit is configured and adapted to be coupled to a coaxial cable. The NFC reader also includes a second section. The second section includes a second tuning circuit. The second tuning circuit includes a second tuner capacitor and a damping resistor. The second tuning circuit is configured and adopted to be coupled to the coaxial cable. The second section further includes an antenna coupled to the second tuning circuit.
28 Citations
10 Claims
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1. A near field communication (NFC) reader comprising,
a first section; -
a second section; wherein the first section includes an NFC controller; a filter coupled to the NFC controller, wherein the filter includes a filter capacitor; a first tuning circuit coupled to the filter, wherein the first tuning circuit includes a tuner capacitor that is electrically coupled in parallel to the filter capacitor, wherein the first tuning circuit includes a first cable connector adapted to receive a first end of a coaxial cable; wherein the second section includes a second tuning circuit, wherein the second tuning circuit includes a second tuner capacitor and a damping resistor, wherein the second tuning circuit includes a second cable connector adapted to receive a second end of the coaxial cable; and an antenna coupled to the second tuning circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A near field communication (NFC) reader comprising,
a first section; -
a second section; wherein the first section includes an NFC controller; a filter coupled to the NFC controller, wherein the filter includes a filter capacitor; a first tuning circuit coupled to the filter, wherein the first tuning circuit includes a tuner capacitor that is electrically coupled in parallel to the filter capacitor, wherein the first tuning circuit includes a first cable connector, wherein the value of the tuner capacitor is selected based on a preselected length of a cable to be connected between the first cable connector and the second cable connector; wherein the second section includes a second tuning circuit, wherein the second tuning circuit includes a second tuner capacitor and a damping resistor, wherein the second tuning circuit includes a second cable connector; and an antenna coupled to the second tuning circuit.
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10. A near field communication (NFC) reader comprising,
a first section; -
a second section; wherein the first section includes an NFC controller; a filter coupled to the NFC controller, wherein the filter includes a filter capacitor; a first tuning circuit coupled to the filter, wherein the first tuning circuit includes a tuner capacitor that is electrically coupled in parallel to the filter capacitor, wherein the first tuning circuit includes a first cable connector; wherein the second section includes a second tuning circuit, wherein the second tuning circuit includes a second tuner capacitor and a damping resistor, wherein the second tuning circuit includes a second cable connector; and an antenna coupled to the second tuning circuit; wherein the first section and the second section are configured and adapted to be coupled together through the first cable connector and the second cable connector only.
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Specification