Solid state tuning with coupled inductors for downhole systems

A method to perform multi-channel communication, the method comprising:

• establishing multi-channel communication and legacy channel communication;
• evaluating a frequency range of legacy channel communication;
• evaluating a frequency range of multi-channel communication that includes a multi-channel communications operating frequency;
• and
• adjusting a tunable multi-channel communication filter to be tuned for the multi-channel communication operating frequency and reduce impedance of the multi-channel communication filter on legacy signals communicated within the frequency range of the legacy channel communication,
• wherein the tunable multi-channel communication filter comprises a transformer having a primary winding and a secondary winding, wherein the primary winding is isolated from a tuning bank coupled to the secondary winding.

An apparatus that utilizes a tunable multi-channel communication filter for antenna tuning, the apparatus comprising:

• a transformer having a primary winding that is coupled to an antenna and being magnetically coupled to one or more secondary windings;
• a tuning bank including a first set of capacitors;
• and
• a first set of switches configured to adjust capacitance of the first set of capacitors to tune the multi-channel communication filter for signals having a first frequency range through the multi-channel communication filter,
• wherein the tuning bank and the first set of switches are coupled to the one or more secondary windings, and
• wherein the primary winding is isolated from the tuning bank.