Semiconductor device
First Claim
Patent Images
1. A wireless communication system comprising:
- an antenna;
a plurality of switches connected to the antenna;
a plurality of primary inductors each of which receives received signals from the plurality of switches;
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;
a plurality of low noise amplifiers, andwherein 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 or 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.
55 Citations
14 Claims
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1. A wireless communication system comprising:
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an antenna; a plurality of switches connected to the antenna; a plurality of primary inductors each of which receives received signals from the plurality of switches; 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; a plurality of low noise amplifiers, and 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 or the plurality of low noise amplifiers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A wireless communication system comprising:
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an antenna; a plurality of switches connected to the antenna; a plurality of primary inductors each of which receives received signals from the plurality of switches; 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 secondary inductor and differential output nodes coupled to the demodulator. - View Dependent Claims (12, 13, 14)
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Specification