Apparatus and method for transmit leakage signal suppression in RFID reader
First Claim
1. An apparatus for suppressing a transmit leakage signal of a radio frequency identification (RFID) reader, the apparatus comprising:
- a first power distributor distributing a transmission signal to output a first transmission signal and a second transmission signal;
a second power distributor distributing the output second transmission signal to output a third transmission signal and a fourth transmission signal;
a first amplitude/phase converter converting an amplitude and a phase of the output first transmission signal to generate a first converted signal;
a second amplitude/phase converter converting an amplitude and a phase of the output third transmission signal to generate a second converted signal;
a first power combiner combining the first converted signal with a first leakage signal that is generated in association with the output fourth transmission signal; and
a second power combiner combining the second converted signal with a second leakage signal that is generated in association with the output fourth transmission signal.
1 Assignment
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Accused Products
Abstract
A method and apparatus for suppressing a transmit leakage signal of a radio frequency identification (RFID) reader is provided. The apparatus includes: a first power distributor distributing a transmission signal to output a first transmission signal and a second transmission signal; a second power distributor distributing the second transmission signal to output a third transmission signal and a fourth transmission signal; a first amplitude/phase converter converting an amplitude and a phase of the first transmission signal to generate a first converted signal; a second amplitude/phase converter converting an amplitude and a phase of the third transmission signal to generate a second converted signal; a first power combiner combining the first converted signal with a first leakage signal generated in association with the fourth transmission signal; and a second power combiner combining the second converted signal with a second leakage signal generated in association with the fourth transmission signal.
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Citations
20 Claims
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1. An apparatus for suppressing a transmit leakage signal of a radio frequency identification (RFID) reader, the apparatus comprising:
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a first power distributor distributing a transmission signal to output a first transmission signal and a second transmission signal; a second power distributor distributing the output second transmission signal to output a third transmission signal and a fourth transmission signal; a first amplitude/phase converter converting an amplitude and a phase of the output first transmission signal to generate a first converted signal; a second amplitude/phase converter converting an amplitude and a phase of the output third transmission signal to generate a second converted signal; a first power combiner combining the first converted signal with a first leakage signal that is generated in association with the output fourth transmission signal; and a second power combiner combining the second converted signal with a second leakage signal that is generated in association with the output fourth transmission signal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus for suppressing a transmit leakage signal of an RFID reader, the apparatus comprising:
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a first power distributor distributing a transmission signal to output a first transmission signal and a second transmission signal; a second power distributor distributing the output second transmission signal to output a third transmission signal and a fourth transmission signal; a first amplitude/phase converter converting an amplitude and a phase of the output third transmission signal to generate a first converted signal; a second amplitude/phase converter converting an amplitude and a phase of the output fourth transmission signal to generate a second converted signal; a first power combiner combining the first converted signal and the second converted signal; and a second power combiner combining an output signal of the first power combiner with a first leakage signal and a second leakage signal that are generated in association with the output first transmission signal. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A method of suppressing a transmit leakage signal of an RFID reader, the method comprising:
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distributing a transmission signal to output a first transmission signal and a second transmission signal; distributing the output second transmission signal to output a third transmission signal and a fourth transmission signal; converting an amplitude and a phase of the output first transmission signal to generate a first converted signal; converting an amplitude and a phase of the output third transmission signal to generate a second converted signal; combining the first converted signal with a first leakage signal that is generated in association with the output fourth transmission signal; and combining the second converted signal with a second leakage signal that is generated in association with the output fourth transmission signal. - View Dependent Claims (15, 16, 17)
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18. A method of suppressing a transmit leakage signal of an RFID reader, the method comprising:
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distributing a transmission signal to output a first transmission signal and a second transmission signal; distributing the output second transmission signal to output a third transmission signal and a fourth transmission signal; converting an amplitude and a phase of the output third transmission signal to generate a first converted signal; converting an amplitude and a phase of the output fourth transmission signal to generate a second converted signal; combining the first converted signal and the second converted signal by reflecting a first leakage signal and a second leakage signal that are generated in association with the output first transmission signal; and combining an output signal according to the combining the first converted signal and the second converted signal, with the first leakage signal and the second leakage signal. - View Dependent Claims (19, 20)
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Specification