Capacitive hybrid with PGA for full duplex transceivers
AssigneeAvago Technologies International Sales Pte. Limited
InventorsJingguang Wang, Kambiz Vakilian
Life of this patent
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Abstract
Disclosed herein are implementations of a hybrid network for use in a full duplex communication system. In one aspect, the hybrid network includes a first circuit coupled between an output of a communication channel and a shared output of a transmitter and the communication channel, a second circuit coupled between a first output of the transmitter and the shared output, a third circuit coupled between the shared output and an input of an amplifier, a fourth circuit coupled between the input of the amplifier and a second output of the transmitter, and a fifth circuit coupled between an output of the amplifier and the input of the amplifier. In some embodiments, the output of the amplifier is coupled to an input of a receiver.
Claims23
A hybrid network for use in a full duplex communication system, wherein the hybrid network comprises:
- a first circuit coupled between an output of a communication channel and a node between a transmitter and the communication channel;
- a second circuit comprising a first resistor having a first resistance coupled between a first output of the transmitter and the node;
- a third circuit coupled between the node and an input of an amplifier;
- a fourth circuit comprising a second resistor having a second resistance coupled between the input of the amplifier and a second output of the transmitter, wherein the hybrid network is configured to use a second transmit signal from the second output of the transmitter to cancel a first transmit signal from the first output of the transmitter based at least on the first resistance and the second resistance;
- and
- a fifth circuit coupled between an output of the amplifier and the input of the amplifier, wherein the output of the amplifier is coupled to an input of a receiver.
A hybrid network for use in a full duplex communication system, wherein the hybrid network comprises:
- a first circuit comprising a first resistor having a first resistance coupled between a first output of a transmitter and a node of the transmitter and a communication channel;
- a second circuit coupled between the node and an input of an amplifier, wherein the second circuit includes a first capacitor;
- a third circuit comprising a second resistor having a second resistance coupled between the input of the amplifier and a second output of the transmitter, wherein the third circuit includes a second capacitor, wherein the hybrid network is configured to use a second transmit signal from the second output of the transmitter to cancel a first transmit signal from the first output of the transmitter based at least on the first resistance and the second resistance;
- and
- a fourth circuit coupled between an output of the amplifier and the input of the amplifier, wherein the output of the amplifier is also coupled to a receiver.
A device, comprising:
- a first resistor coupled between an output of a communication channel and a node between a transmitter and the communication channel;
- a second resistor having a first resistance coupled between a first output of the transmitter and the node;
- a first capacitor coupled between the node and an input of an amplifier;
- a second capacitor and a third resistor having a second resistance coupled between the input of the amplifier and a second output of the transmitter, wherein the device is configured to use a second transmit signal from the second output of the transmitter to cancel a first transmit signal from the first output of the transmitter based at least on the first resistance and the second resistance;
- and
- a third capacitor coupled between an output of the amplifier and the input of the amplifier, wherein the output of the amplifier is coupled to an input of a receiver.
Dependencies are inferred from the claim text.