Patent ID: 9312912
Filing Date: 2016-04-12
CPC Classification: H04B

Claim Text:
1. A signal transmitting and receiving circuit of a digital subscriber line for transmitting an output signal to a telecommunication loop or receiving an input signal from the telecommunication loop, comprising: a transformer comprising a first winding, a second winding, and a third winding, the first winding comprising a first coil and a second coil, the third winding coupled to the telecommunication loop and the first and the second coils comprising respectively a first polarity end and a second polarity end; a first impedance unit comprising two ends coupled respectively to the first polarity end of the first coil and the first polarity end of the second coil; a second impedance unit comprising two ends coupled respectively to the second polarity end of the first coil and the second polarity end of the second coil; a signal transmitting module, coupled to the first winding, for generating the output signal; and a signal receiving module, coupled to the second winding, for processing the input signal; wherein, the first winding and the third winding transmit the output signal to the telecommunication loop by electromagnetic coupling, and the third winding and the second winding transmits the input signal to the signal receiving module by electromagnetic coupling.