Semiconductor device
First Claim
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1. A semiconductor device comprising:
- a plurality of primary inductors;
a secondary inductor which is provided commonly for the primary inductors, and magnetically coupled to each of primary inductors;
a demodulator which converts a signal transmitted from one of the primary inductors to the secondary inductor by electromagnetic induction, into a signal of a low frequency; and
a plurality of low noise amplifiers,wherein at least one of the low noise amplifiers corresponds to each of the primary inductors, andwherein each of the primary inductors is coupled between differential output nodes of a corresponding one of the plurality of low noise amplifiers.
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Abstract
In a semiconductor device, received signals of different frequency bands are input selectively to low noise amplifiers. A plurality of primary inductors are coupled between differential output nodes of the respective low noise amplifiers. A secondary inductor is provided commonly for the primary inductors, and magnetically coupled to the primary inductors. A demodulator converts a received signal transmitted from one of the primary inductors to the secondary inductor by electromagnetic induction, into a signal of a low frequency.
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Citations
15 Claims
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1. A semiconductor device comprising:
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a plurality of primary inductors; a secondary inductor which is provided commonly for the primary inductors, and magnetically coupled to each of primary inductors; a demodulator which converts a signal transmitted from one of the primary inductors to the secondary inductor by electromagnetic induction, into a signal of a low frequency; and a plurality of low noise amplifiers, wherein at least one of the low noise amplifiers corresponds to each of the primary inductors, and wherein each of the primary inductors is coupled between differential output nodes of a corresponding one of the plurality of low noise amplifiers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A semiconductor device comprising:
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a plurality of primary inductors; a secondary inductor which is provided commonly for the primary inductors, and magnetically coupled to each of primary inductors; a demodulator which converts a signal transmitted from one of the primary inductors to the secondary inductor by electromagnetic induction, into a signal of a low frequency; and a low noise amplifier which includes differential input nodes coupled to the output of the secondary inductor and differential output nodes coupled to the input of the demodulator. - View Dependent Claims (12, 13, 14)
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15. A semiconductor device comprising:
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a plurality of low noise amplifiers to which received signals of different frequency bands are selectively input; a plurality of primary inductors which are coupled between differential output nodes of the low noise amplifiers, and a secondary inductor which is provided commonly for the primary inductors, and magnetically coupled to the primary inductors.
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Specification