A 14.5 GHz, 0.35 /spl mu/m frequency divider for dual-modulus prescaler

This paper reports on structures of frequency divider to be used in the first stage of a dual modulus prescaler. A divider by 2, the prescaler elementary cell, has been designed and characterized. A 4/5 divider is presented as a natural extension of the divider by 2. A first realization has been characterized. We show that an asynchronous structure can overcome the synchronous structure frequency limitations.