[Help] How to get a 50% duty cycle through out of a current starved inverter

[hejinjie]

As showing in the attachment, I need to generate a vdd rail regulated signal with a rtr input signal.
My question is how to change this circuit to get a nearly 50% duty cycle output signal.
Thanks in advance,

-Kevin

 

[TonyM]

I'm afraid your question makes little sense nor does the diagram. Maybe put a lot more detail on your next post.