Parallel hybrid circuit

摘要

A parallel hybrid circuit comprising a transformer, a first matching resistor, a second matching resistor and an echo cancelling circuit. The transformer comprises: a first side, comprising a transmitting coil group and a receiving coil group, wherein the transmitting coil group comprises at least one transmitting coil, wherein the receiving coil group comprises at least one receiving coil; a second side comprising at least one transceiving coil; wherein the transformer receives a transmitting signal and couples the transmitting signal from the first side to the second side via a first turn ratio, and receives a receiving signal from the transceiving line and couples the receiving signal from the second side to the first side via a second turn ratio. The first, second matching resistors are coupled with the transformer in parallel. The echo cancelling circuit is coupled between the transmitting line and the receiving line.

主权项

1. A parallel hybrid circuit, comprising:
a transformer, comprising:
a first side, comprising a transmitting coil group and a receiving coil group, wherein the transmitting coil group comprises at least one transmitting coil respectively having a transmitting coil number cnt, wherein the receiving coil group comprises at least one receiving coil respectively having a receiving coil number cnr a second side comprising at least one transceiving coil having a transceiving coil number cntr;wherein the transformer receives a transmitting signal from at least one transmitting line and couples the transmitting signal from the first side to the second side via a first turn ratio to generate a transformed transmitting signal to at least one transceiving line, and receives a receiving signal from the transceiving line and couples the receiving signal from the second side to the first side via a second turn ratio to generate a transformed receiving signal to at least one receiving line;where the first turn ratio is relative to the cnt and the cntr, and the second turn ratio is relative to the cntr and the cnr;wherein the transmitting coil group and the receiving coil group are different coil groups, wherein the transmitting coil group does not output the transformed receiving signal, wherein the receiving coil group does not receive the transmitting signal; a first matching resistor, coupled with the transformer in parallel; a second matching resistor, coupled with the transformer in parallel; and an echo cancelling circuit coupled between the transmitting line and the receiving line.