A 4–6GHz low-voltage CMOS integer-M frequency divider applied in wireless sensor networks

In this paper, a 4-6GHz low-voltage CMOS integer-M frequency divider is presented whose modulus can vary from 2403 to 2480 applied in wireless sensor networks. The frequency divider consists of two main modules, a dual-modulus prescaler (DMP), which adopts the structure of the pseudo-differential static D-type flip-flop, and a programmable counter (containing a pulse-counter, a swallow counter and a decoder). The whole frequency divider is designed in 0.18μm CMOS process and the measurement results show that, it can operate correctly over a wide range of 4-6 GHz and the core current of the frequency divider consumes 2.2mA with a 1V power supply.