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The authors have reported an oscillator array using positive feedback type push-push oscillators. The performance of oscillator array is not enough about the stability against the tuning voltage for controlling the output phase difference. In this study, it is confirmed that the characteristics can be improved by injection locking technology. The technology is applied for a two-element oscillator...
An oscillator array using a positive feedback type Push-Push oscillator is presented. The coupling circuit used for the oscillator array is a directional phase shifter consists of a directional coupler and a reflection type phase shifter using a Ronde coupler. An oscillating signal in the feedback loop of Push-Push oscillator is injected into that of the adjacent oscillator via the coupling circuit...
A coupled push-push oscillator array using a directional coupling circuit is presented. The circuit is composed of unit oscillators and coupling circuits. A push-push oscillator is adopted for the unit oscillator. The output signal is the second harmonic signal (2ƒ0). The fundamental signal (ƒ0) is used for the injection signal to achieve the mutual coupling between adjoining unit oscillators. The...
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