An Extended Range Divider Technique for Multi-Band PLL

This paper presents a multiplexer-based extended range multi-modulus divider (ER-MMD) technique for multi-band phase locked loop (PLL). The architecture maintains modular structure by using conventional 2/3 cells and multiplexer without adding any extra logic circuitry. area power overhead is minimal. are designed true single clock (TSPC) ER-MMD to operate in the sub-10 GHz range. A division of 2 511 achieved this logic. operates at maximum frequency 6 with worst-case current 625 μA when powered 1 V supply. dual voltage controlled oscillator (VCO), L5/S band PLL Indian Regional Navigation Satellite System (IRNSS) application designed, which incorporates an based on proposed approach as proof concept. achieves best efficiency 12 GHz/mW, among state-of-the-art designs.