Active gyrator circuit in one-pair ethernet with podl

A method performed by a Power over Data Lines (PoDL) circuit comprising:

• providing DC power and differential data over a first conductor and a second conductor;
• transmitting differential data signals over the first conductor and the second conductor and receiving differential data signals from the first conductor and the second conductor by a first transceiver having a first terminal and a second terminal;
• blocking DC voltage by a first AC-coupling device coupled in series between the first terminal and the first conductor;
• blocking the DC voltage by a second AC-coupling device coupled in series between the second terminal and the second conductor;
• attenuating common mode noise by a common mode choke (CMC) coupled in series between the first AC-coupling device and the first conductor, and coupled in series between the second AC-coupling device and the second conductor;
• supplying DC power by a DC power source having a third terminal and a fourth terminal;
• and
• attenuating the differential data signals and passing the DC power by a first gyrator that has impedance vs. frequency characteristics that generally emulate an inductor, wherein the first gyrator is formed in an integrated circuit (IC), the first gyrator being coupled between the third terminal of the DC power source and the first conductor.