Realization of Tunable Pole-Q Current-Mode OTA-C Universal Filter |
| |
| Authors: | Pipat Prommee Thanate Pattanatadapong |
| |
| Affiliation: | (1) Electrical Engineering Department, Faculty of Engineering, Fayoum University, Fayoum, Egypt;(2) Electronics and Communications Department, Faculty of Engineering, Cairo University, Giza, Egypt; |
| |
| Abstract: | A realization of a current-mode operational transconductance amplifier-capacitor (OTA-C) universal filter with tunable pole-Q is proposed. A biquadratic band-reject function is used as the initial synthesis function based on three integrator blocks.
Consequently, the proposed filter uses a total of three multiple-output OTAs and three grounded capacitors. Five types of
transfer functions, namely, low-pass, high-pass, band-pass, band-reject, and all-pass responses, can be obtained without changing
the circuit topology. The pole-Q (Q
0) and the pole-frequency (ω
0) parameters are independently tuned. The Q
0 and ω
0 parameters are electronically tuned by adjusting the transconductance gains of the OTAs. Furthermore, Q
0 can be tuned by varying the capacitor manually without affecting ω
0. SPICE simulation results of the proposed filter are presented. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
