Patent ID: 7877068

Claim:
A semiconductor device capable of wireless communication comprising: a first demodulation circuit having an input portion electrically connected to an antenna circuit, the first demodulation circuit is configured to demodulate a first electric signal; a second demodulation circuit, which is configured to demodulate a second electric signal having a polarity opposite to the first electric signal, the second demodulation circuit electrically connected to the input portion; a first bias circuit having an input portion electrically connected to an output portion of the first demodulation circuit; a second bias circuit having an input portion electrically connected to an output portion of the second demodulation circuit; and a comparator having a first input portion and a second input portion, wherein an output portion of the first bias circuit is electrically connected to the first input portion of the comparator, and wherein an output portion of the second bias circuit is electrically connected to the second input portion of the comparator.