Wireless electric power transmission apparatus
First Claim
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1. A wireless electric power transmission apparatus comprising:
- two antennas having the ability to transmit electric power by a non-contact method via resonant magnetic coupling, one of the two antennas being a series resonant circuit, of which the resonant frequency is fs, the other antenna being a parallel resonant circuit, of which the resonant frequency is fp; and
an oscillator which is connected to one of the two antennas that transmits RF power,wherein if the coupling coefficient between the two antennas is k, then fs and fp are set so as to satisfy the inequality −
1.1516×
k2+0.0363×
k+0.9983≦
fs/fp<
1.
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Abstract
A wireless electric power transmission apparatus as an embodiment of the present disclosure includes: two antennas 107, 109 having the ability to transmit electric power by a non-contact method via resonant magnetic coupling, one of the two antennas being a series resonant circuit, of which the resonant frequency is fs, the other antenna being a parallel resonant circuit, of which the resonant frequency is fp; and an oscillator 103 which is connected to one of the two antennas that transmits RF power. If the coupling coefficient between the two antennas 107 and 109 is k, then fs and fp are set so as to satisfy the inequality −1.1516×k2+0.0363×k+0.9983≦fs/fp<1.
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Citations
13 Claims
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1. A wireless electric power transmission apparatus comprising:
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two antennas having the ability to transmit electric power by a non-contact method via resonant magnetic coupling, one of the two antennas being a series resonant circuit, of which the resonant frequency is fs, the other antenna being a parallel resonant circuit, of which the resonant frequency is fp; and an oscillator which is connected to one of the two antennas that transmits RF power, wherein if the coupling coefficient between the two antennas is k, then fs and fp are set so as to satisfy the inequality −
1.1516×
k2+0.0363×
k+0.9983≦
fs/fp<
1. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification