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Oscillating signal splitter into 3 output

Jere9522

Hello everyone,

I am a creating a driver circuit for PZT atomizer transducer with a resonance frequency of 110kHz. The current design to split the signal in to three is by means of 3 cascaded op-amp. Also I am thinking to apply Phase locked loop in every output for the transducer to work at its resonance in the long run. 
Are there other ways to split oscillated signal into three? What techniques and concept can I apply with this? Thank you in advance for the answers, much appreciated.

This is the Oscillator circuit with cascaded amplifier as three signal splitter

image

Here is the output waveform, with 60 phase shift each output.

image

Here is the block diagram, which will be the overall system of the driver circuit.

image

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    If the atomizers don't all have exactly the same resonant frequency, it doesn't seem possible to lock on the resonant frequencies and still maintain a 60 degree phase shift.

    Why do you need to have a fixed phase difference?

    I think it might be possible to design the phase lock circuits to have 60 degree differences without the splitter, but they couldn't lock to different resonant frequencies at the same time. 

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    If the atomizers don't all have exactly the same resonant frequency, it doesn't seem possible to lock on the resonant frequencies and still maintain a 60 degree phase shift.

    Why do you need to have a fixed phase difference?

    I think it might be possible to design the phase lock circuits to have 60 degree differences without the splitter, but they couldn't lock to different resonant frequencies at the same time. 

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