QUALITY ADJUSTMENT OF A RECEIVING CIRCUIT
First Claim
1. A receiving circuit for a communication device of an access arrangement having a resonant circuit comprising a receiving coil for converting magnetic induction into electrical current, and a capacitorwherein the receiving circuit also has a first resistor and a switching element designed to controllably connect and disconnect the first resistor to the resonant circuit.
1 Assignment
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Accused Products
Abstract
A receiving circuit for a communication unit of an access device has a resonance circuit (1) with a receiving coil (L) for converting a magnetic induction into electrical current, and a capacitor (C). The receiving circuit (10) further has a first resistor (R1) and a switching element (3) designed for controllably connecting and disconnecting the first resistor (R1) to the resonance circuit (1). The receiving circuit electrically connects the resonance circuit (1) to the first resistor (R1) when the circuitry of the resonance circuit (1) changes from a first circuitry (7) to a second circuitry (8), and electrically disconnects the first resistor (R1) from the resonance circuit (1) when the circuitry of the resonance circuit (1) changes from the second circuitry (8) to the first circuitry (7).
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Citations
20 Claims
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1. A receiving circuit for a communication device of an access arrangement having a resonant circuit comprising a receiving coil for converting magnetic induction into electrical current, and a capacitor
wherein the receiving circuit also has a first resistor and a switching element designed to controllably connect and disconnect the first resistor to the resonant circuit.
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10. A method for changing the quality of a resonant circuit comprising the steps of
electrically connecting the resonant circuit to a first resistor if the circuitry of the resonant circuit changes from first circuitry to second circuitry, and with electrically disconnecting the first resistor from the resonant circuit if the circuitry of the resonant circuit changes from the second circuitry to the first circuitry.
Specification