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High speed design solution for high divide-by-value dual modulus prescaler remains a challenge in designing high frequency synthesizers in CMOS technology. This paper presents a dual-modulus divide-by-127/128 prescaler implemented in 0.35 μm CMOS technology operating at 2.4GHz frequency. Unlike the conventional topologies, this design is based on a novel way of dual-modulus division using four transmission gates in critical path. It consumes 4.8mW power from a 3V supply. Measurement results are provided.