Transceiver with shared filter for both transmit and receive modes

A method comprising:

• filtering, using a bi-directional filter, a first signal received via a signal node and conveyed, in a first direction, onto a transmission line coupled to a transmission node;
• and
• filtering, using the bi-directional filter, a second signal conveyed in a second direction from the transmission line;
• wherein a frequency response of the bi-directional filter is equivalent for the first signal and the second signal;
• and
• wherein the bi-directional filter includes:
• a first inductor coupled to the signal node and a common node;
• a second inductor coupled to the common node and the transmission node;
• a first capacitor coupled to the common node and a ground node;
• and
• a second capacitor coupled to the transmission node and the ground node.

A system comprising:

• a transmission line configured to convey signals in a first direction and a second direction, the second direction being opposite of the first direction;
• a first bi-directional filter coupled to a first end of the transmission line;
• and
• a second bi-directional filter coupled to a second end of the transmission line;
• a first transmitter and a first receiver coupled to the first bi-directional filter;
• a second transmitter and a second receiver coupled to the second bi-directional filter;
• a first serializer-deserializer (SERDES) coupled to the first transmitter and the first receiver;
• a second SERDES coupled to the second transmitter and the second receiver;
• and
• wherein the first and second bi-directional filters are configured to provide an equivalent response for signals conveyed in the first direction and the second direction.