Patent ID: 8559620

Claim:
A communications circuit for reducing crosstalk, comprising: a conductive power supply pattern supplying driving power applied from the outside; a first transformer implemented as an integrated passive device (IPD) type transformer with a first input conductive line receiving a first signal of a low-frequency band from a first power amplifier where a first output conductive line disposed adjacent the first input conductive line to be electromagnetically coupled to the first input conductive line and receiving the driving power supplied from the conductive power supply pattern through a terminal formed on the first input conductive line; and a second transformer implemented as the IPD type transformer with a second input conductive line receiving a second signal of a high-frequency band from a second power amplifier where a second output conductive line disposed adjacent the second input conductive line to be electromagnetically coupled to the second input conductive line and receiving the driving power supplied from the conductive power supply pattern through a terminal formed on the second input conductive line, wherein the conductive power supply pattern includes an inductor component, and the conductive power supply pattern has a structure separated into a first conductive power supply pattern supplying the driving power to the first transformer and a second conductive power supply pattern supplying the driving power to the second transformer.