Patent ID: 9088321
Filing Date: 2015-07-21
Classification: H04B

Abstract:
1. A differential transmission circuit for transmitting a differential signal including first and second signals of phases opposite to each other from a transmitting circuit to a receiving circuit, comprising: a differential signal line including a first signal line for transmitting the first signal and a second signal line for transmitting the second signal, wherein a power source line for supplying a source potential to the transmitting circuit and the receiving circuit; a ground line for supplying a ground potential to the transmitting circuit and the receiving circuit; and a first common mode choke coil including first and second coil units magnetically coupled to each other, wherein one end of a third resistive element is connected to a first node on the first signal wiring pattern, one end of a second resistive element is connected to a second node on the second signal wiring pattern, one end of a sixth resistive element is connected to a third node on the third signal wiring pattern, one end of a fifth resistive element is connected to a fourth node on the fourth signal wiring pattern, the other end of the third resistive element and the other end of the sixth resistive element are connected to the ground line, and the other end of the second resistive element and the fifth resistive element are connected to the power source line via the first common mode choke coil.