Tunable microwave devices with auto-adjusting matching circuit

An impedance matching circuit, comprising:

• a matching network for coupling to a variable load;
• wherein the matching network comprises a first port and a second port;
• wherein the variable load is coupled to one of the first port or the second port;
• wherein the matching network comprises one or more variable capacitors;
• wherein the one or more variable capacitors are operable to receive one or more variable voltage signals to cause the one or more variable capacitors to change an impedance of the matching network;
• and
• wherein at least one of the one or more variable capacitors comprises:
• a first conductor coupled to one of the first port or the second port;
• a second conductor;
• and
• a tunable reactive material having a top surface and a bottom surface positioned between the first conductor and the second conductor, wherein at least one of the first conductor and the second conductor are adapted to receive the one or more variable voltage signals to cause the change in the impedance of the matching network;
• a sensor coupled to the matching network for providing sensing data;
• and
• a voltage source used to produce the one or more variable voltage signals to change the impedance of the matching network, wherein the voltage source receives voltage values for producing the one or more variable voltage signals, and wherein the voltage values are determined from comparisons of the sensing data.

An impedance matching circuit, comprising:

• a matching network;
• wherein the matching network comprises a first port and a second port;
• wherein the matching network comprises one or more variable reactance components;
• wherein the one or more variable reactance components are operable to receive one or more variable voltage signals to cause the one or more variable reactance components to change an impedance of the matching network;
• and
• wherein at least one of the one or more variable reactance components comprises:
• a first conductor coupled to one of the first port or the second port;
• a second conductor;
• and
• a tunable material having a top surface and a bottom surface positioned between the first conductor and the second conductor, wherein at least one of the first conductor and the second conductor are adapted to receive the one or more variable voltage signals to cause the change in the impedance of the matching network;
• a sensor coupled to the matching network for providing sensing data used to produce the one or more variable voltage signals to change the impedance of the matching network;
• and
• a voltage source used to produce the one or more variable voltage signals to change the impedance of the matching network, wherein the voltage source receives voltage values for producing the one or more variable voltage signals, and wherein the voltage values are determined from comparisons of the sensing data.