Increasing ring oscillator frequency through unequal rising and falingl time ?

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arya.111

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Hello all !

Rabaey page 205 shows minimum delay tp =(tp_hl+tp_lh)/2 can be some what lesser than the case where tp_hl = tp_lh i.e. low to high and high to low time are equal.

Keeping in view frequency of ring oscillator is 1/N*(tp_hl+tp_lh); is it possible to design a faster ring oscillator by making tp_hl+tp_lh minimum which may correspond to unequal rising and falling time ???

Thanks in advance
 

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