Quiet Microwave Oscillator Опции

[alex190]

What do you think of this design? Note especially the slot coupling of the microstrip to cavity, As well as the varicap position.

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[AlexKLm]

Nothing unusual (Ничего необычного).

[alex190]

Nothing unusual (Ничего необычного).

Well, regarding the actual oscillator circuit, its nothing special. What is of interest for me is the coupling of the RF energy to the cavity without the mechanical complexity of the RF probes or loops. It is done by a slot radiating from the ground plane down toward the cavity. Anybody did it like this? Does it worth anything?

[AlexKLm]

Well, regarding the actual oscillator circuit, its nothing special. What is of interest for me is the coupling of the RF energy to the cavity without the mechanical complexity of the RF probes or loops. It is done by a slot radiating from the ground plane down toward the cavity. Anybody did it like this? Does it worth anything?

I do not understand your idea with groud-plane (antenna?). I propose the following decision:

Part of enargy will be directed to waveguid. But please remember, that the frequency of the oscillator will depend of the load of the waveguid. This is why the better way is to make coupling through probes or loops taking energy from oscillator output, when the oscillator's resonance system is buffered (as normally, i hope).