Title :
A tunable duty-cycle-controlled switched-R-MOSFET-C CMOS filter for low-voltage and high-linearity applications
Author :
Xiao, Shelly ; Silva, José ; Moon, Un-Ku ; Temes, Gábor
Author_Institution :
Sch. of Electr. Eng. & Comput. Sci., Oregon State Univ., Corvallis, OR, USA
Abstract :
A switched-R-MOSFET-C filter with tunable corner frequency is described. The tunability is achieved by varying the clock duty cycle using an automatic tuning circuit. This tuning method does not involve a change in any gate voltage, and is therefore particularly suitable for low-voltage and high-linearity applications. The advantages of the proposed method are illustrated with the design and simulation of a high-Q biquad filter.
Keywords :
CMOS integrated circuits; MOSFET circuits; biquadratic filters; circuit simulation; circuit tuning; integrated circuit design; low-power electronics; switched filters; timing; automatic tuning circuit; clock duty cycle variation; cycle-controlled switched filter; gate voltage; high-Q biquad filter design; high-Q biquad filter simulation; high-linearity applications; low-voltage applications; switched-R-MOSFET-C CMOS filter; tunable corner frequency; tunable duty switched filter; Circuit optimization; Clocks; Filters; Frequency; Linearity; Low voltage; Switches; Transfer functions; Tunable circuits and devices; Tuning;
Conference_Titel :
Circuits and Systems, 2004. ISCAS '04. Proceedings of the 2004 International Symposium on
Print_ISBN :
0-7803-8251-X
DOI :
10.1109/ISCAS.2004.1328224
