Oscillation issue with amplifier block

[Sabby1226]

I am making one oscillator circuit using two amplifier block and one voltage controlled phase shifter. The circuit is oscillating at 17 GHz and dc current drawn by the circuit is total 520 mA(same mentioned in datasheet). I introduced mechanical phase shifter in the circuit. while injecting small mechanical phase shift the circuit oscillation is shifting 16.9-17.2 GHz. After injecting some more phase shift suddenly the circuit starts oscillating at 6.6 GHz and dc current drawn is 490 mA in total.

I tried switching of the dc supply and reapply it to the circuit. Nothing changed. Change appears only when I remove the dc probe from the amplifier block and reapply to the amplifier block. Then again 520 mA current drawn and oscillation at 17 GHz.

please tell me why this might happen. Any leads will be helpful.

 

[BigBoss]

So your circuit has 2 (maybe more ) oscillation tendency. This is somehow normal for many oscillators.
They have essentially different resonance and oscillation disposition points but one of them is dominant.
Sometimes, they can oscillate at different frequencies simultaneously.
Those circuits are still unknown devices.