Title :
A 5-GHz prescaler using improved phase switching
Author :
Shu, Keliu ; Sanchez-Sinencio, Edgar
Author_Institution :
Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA
fDate :
6/24/1905 12:00:00 AM
Abstract :
A low-voltage low-power 5-GHz divide-by-31/32 prescaler is presented in this paper. An improved phase switching technique is used. By changing the switching direction, an inherently; glitch-free phase switching is achieved without any additional circuit for retiming or synchronization. The phase switching is made between the 45° spaced output phases to further reduce the power consumption and improve the robustness of circuit. The circuit was designed in 0.18 μm CMOS process. Simulation shows that it consumes 7.5 mA and 8.2 mA from a single 1.5 V supply with 5 GHz and 8 GHz inputs, respectively.
Keywords :
CMOS digital integrated circuits; frequency synthesizers; low-power electronics; prescalers; 0.18 micron; 1.5 V; 5 GHz; 7.5 mA; 8 GHz; 8.2 mA; CMOS; glitch-free phase switching; low-power divide-by-31/32 prescaler; output phases; power consumption; robustness; switching direction; CMOS process; Circuit simulation; Counting circuits; Energy consumption; Frequency conversion; Frequency synthesizers; Robustness; Switching circuits; Timing; Voltage-controlled oscillators;
Conference_Titel :
Circuits and Systems, 2002. ISCAS 2002. IEEE International Symposium on
Print_ISBN :
0-7803-7448-7
DOI :
10.1109/ISCAS.2002.1010166
