Design of electronically tunable first order allpass filter using OTAs with gain controllability

Prommas, Thawach; Jaikla, Winai; Suwanjan, Peerawut; Silapan, Phamorn

doi:10.1109/ISCIT.2013.6645880

Design of electronically tunable first order allpass filter using OTAs with gain controllability

Author(s)

Prommas, Thawach

Jaikla, Winai

Suwanjan, Peerawut

Silapan, Phamorn

Date Issued

December 31, 2013

Type

Conference Paper

DOI

10.1109/ISCIT.2013.6645880

Abstract

This paper presents current-mode first-order allpass filter using three operational transconductance amplifiers (OTAs) and grounded capacitor. The use of grounded capacitor makes the circuit more suitable for integrated circuit implementation. The current gain and phase shift can be independently controlled with electronic method. The circuit has high output impedance which enables easy cascading in the current mode circuits. The PSpice simulation results are depicted. The given results agree well with the theoretical anticipation. © 2013 IEEE.

Citation

13th International Symposium on Communications and Information Technologies Communication and Information Technology for New Life Style Beyond the Cloud Iscit 2013, 350-353, 2013

Subjects

all-pass filter

Current-mode

first-order filter

integrated circuit

OTA