Power Combiner with Gunn Diode Oscillators

Absntrct -Combiners were developed using two Gunn diodes in dielecpackaged IMPATT diodes giving 10.5-W CW output at 9.1 tric waveguide jimage line) oscillator circuits. The optimum configuration GHz. He coupled individual coaxial oscillators to a main consisted of each Gunn diode being imbedded in a separate dielectric cavity cavity from which the energy was extracted. He further I.Aas a primary source of oscillation. The dielectric resonators were then radiatively coupled to a common dielectric resonator from which the found that it was important to have minimal coupling combined power could be obtained. It was found that the combined power between the oscillators and also small coupling coefficient was greater than the sum of the power obtainable from separate isolated from the oscillator to the main cavity. The coaxial strucoscillators. The proposed combiner appears attractive from the point of tures (housing the resonators) were separated by 1/2 waveview of simplicity of construction and low cost and should be applicable to length and were individually tuned so that each the millimeter-wave region. where the difficulties of precision machined resonator-diode combination would oscillate at the same resonator-diod combinatio woml osilae t sm metal-wled cavities are very reat. frequency. Further work by Kurokawa [2] gave a detailed