Resonant circuit tuning system using magnetic field coupled reactive elements
First Claim
Patent Images
1. A resonant circuit tuning system comprising:
- an LCR circuit; and
a reactive element magnetically coupled to the LCR circuit.
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Abstract
A resonant circuit tuning system and a method for tuning are provided. The resonant circuit tuning system may include an LCR circuit and a reactive element magnetically coupled to the LCR circuit.
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Citations
26 Claims
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1. A resonant circuit tuning system comprising:
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an LCR circuit; and a reactive element magnetically coupled to the LCR circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. An electronic article surveillance (EAS) system comprising:
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at least one of a transmitter and a receiver; at least one antenna connected to the at least one transmitter and receiver; and a tuning circuit configured to tune the at least one antenna, the tuning circuit comprising at least one reactive element magnetically coupled to the antenna. - View Dependent Claims (20, 21, 22)
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23. A method for tuning an LCR circuit, the method comprising:
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magnetically coupling a reactive element to an inductor of the LCR circuit; and controlling a resonant frequency of the LCR circuit using the reactive element. - View Dependent Claims (24, 25, 26)
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Specification