Waveguide for microwave ovens with multiple feeding ports RF power control system and method thereof

An electromagnetic cooking device comprising:

• a heating cavity;
• at least one electromagnetic energy source configured to generate radiation in communication with the heating cavity via a supply cavity;
• a plurality of supply ports configured to emit the radiation into a first region of the heating cavity via a first port and a second region of the heating cavity via a second port from the supply cavity;
• at least one septum disposed along the supply cavity, wherein the septum is configured to adjust a proportion of the radiation emitted from each of the supply ports into the heating cavity;
• at least one actuator configured to adjust a position of the at least one septum to control the proportion of the radiation emitted from the first port and the second port, wherein the at least one septum encloses the second port in the first position and blocks a path to the first port in the second position, and wherein the septum blocks the radiation output from the second port in the first position and blocks the radiation delivered to the first port in the second position;
• and
• a controller in communication with the actuator and the at least one electromagnetic energy source, wherein the controller is configured to:
• control the emission of the radiation from the at least one electromagnetic energy source;
• and
• control the position of the actuator thereby adjusting a proportion of the radiation emitted from each of the ports.

A method of controlling a distribution of electromagnetic energy in a heating cavity, the method comprising:

• generating an amplified signal corresponding to electromagnetic radiation;
• emitting the radiation into a supply cavity;
• controlling an actuator in connection with a septum thereby positioning the septum in a first position;
• emitting the radiation from a first port of the supply cavity and enclosing a second port with the septum arranged in the first position, wherein the septum blocks the radiation output from the second port in the first position;
• controlling the actuator in connection with the septum thereby positioning the septum in a second position;
• and
• emitting the radiation from the second port of the supply cavity and blocking a path to the first port through the supply cavity with the septum arranged in the second position, wherein the septum blocks the radiation delivered to the first port in the second position.