RFID READER ANTENNA PORT ISOLATION
First Claim
Patent Images
1. A device comprising:
- a switch having multiple ports;
an antenna coupled to each corresponding port;
a tunable matching network coupled between each antenna and each port; and
a controller that controls the tunable matching network to detune ports having antennas that are not transferring power when a selected antenna is transferring power.
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Abstract
A device includes a switch having multiple ports, an antenna coupled to each corresponding port, a tunable matching network coupled between each antenna and each port, and a controller to detune ports having antennas that are not transferring power when a selected antenna is transferring power.
20 Citations
20 Claims
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1. A device comprising:
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a switch having multiple ports; an antenna coupled to each corresponding port; a tunable matching network coupled between each antenna and each port; and a controller that controls the tunable matching network to detune ports having antennas that are not transferring power when a selected antenna is transferring power. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system comprising:
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an RFID reader signal path; a switch having multiple ports coupled to the RFID reader signal path; an antenna coupled to each corresponding port; a tunable matching network coupled between each antenna and each port and coupled to the RFID reader controller; and a controller to control the switch and the tunable impedances to detune the tunable impedances coupled to antennas that are not transferring power when a selected antenna is transferring power. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A method comprising:
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selecting a port of a multiport switch on which to transfer energy via an antenna coupled to the selected port; detuning impedances corresponding to antennas coupled to non-selected ports; and transferring energy via the antenna coupled to the selected port. - View Dependent Claims (17, 18, 19, 20)
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Specification