Title :
Electronically tunable first-order all pass sections using OTAs
Author :
Tsukutani, Takao ; Tsunetsugu, Hideki ; Sumi, Yasuaki ; Yabuki, Noboru
Author_Institution :
Dept. of Electr. Eng., Matsue Coll. of Technol., Matsue, Japan
Abstract :
This paper introduces electronically tunable voltage-mode and current-mode first-order all pass sections (APSs) employing operational trans-conductance amplifiers (OTAs) and grounded capacitor. The circuits can realize two all pass characteristics by choosing the current output of the OTA. Additionally, the circuit parameters ω0 and H can be set independently through adjusting the bias currents of the OTAs electronically. Some examples are given together with simulated results by PSPICE.
Keywords :
all-pass filters; operational amplifiers; APS; OTA; current-mode first-order all pass section; electronically tunable first-order all pass section; grounded capacitor; operational transconductance amplifier; voltage-mode first-order all pass section; Capacitors; Gain; Integrated circuit modeling; Oscillators; SPICE; Transconductance; Tuning; Active Circuit; All Pass Characteristic; CMOS Technology; Electronic Tuning; OTA;
Conference_Titel :
Computer Applications and Industrial Electronics (ICCAIE), 2010 International Conference on
Conference_Location :
Kuala Lumpur
Print_ISBN :
978-1-4244-9054-7
DOI :
10.1109/ICCAIE.2010.5735141
