A 2.4-GHz/5-GHz Low Power Pulse Swallow Counter in 0.18-μm CMOS Technology

This paper presents the complementary metal-oxide semiconductor (CMOS) integer-N pulse-swallow counter for 2.4-GHz and 5-GHz 802.11 WLAN applications with 1.8V power supply. The pulse-swallow counter is designed with a TSMC 0.18μm CMOS 1P6M technology process. The pulse-swallow counter consists of a prescaler, a programmable counter, and a swallow counter. In pulse-swallow counter, we use divide-by-2/3 prescaler and a proposed programmable counter to work in higher frequency in order to reduce power consumption. We complete the design of pulse-swallow counter for 2.4-GHz (seven channels) and the 5-GHz (four channels) application. The average power consumption of pulse-swallow counter is 2.6 mW and 3.275 mW for 2.4-GHz and 5-GHz WLAN application respectively