Active Microwave and Millimeterwave Resonator

New circuit component - active resonator - is proposed for use in microwave and millimeterwave circuits. It consists of a common resonator and an amplifier, compensating for losses in the resonator. Properly designed, such an arrangement behaves as a (passive) resonator with dramatically increased quality factor. High quality factors can be achieved even at millimeterwave frequencies, where common resonators suffer from losses due to small skin depths. Viability of the component is experimentally verified at microwave region using a TE01¿ dielectric resonator and an oscillator.