Voltage-mode first-order allpass filter using single-ended OTAs and grounded capacitor

Author

Kumngern, Montree ; Chanwutitum, Jirasak

Author_Institution

Dept. of Telecommun. Eng., King Mongkut´´s Inst. of Technol., Bangkok, Thailand

fYear

2012

fDate

16-18 May 2012

Firstpage

305

Lastpage

308

Abstract

This paper presents a new electronically tunable voltage-mode first-order allpass filter using only three single-ended operational transconductance amplifiers (OTAs) and one grounded capacitor, which is highly suitable for integrated circuit implementation. The pole frequency of the filter can be tuned electronically by adjusting the transconductance value of the OTA. No component-matching conditions are also required for realizing allpass response. The characteristics of the proposed circuit are simulated using PSPICE simulations to confirm the theory.

Keywords

SPICE; all-pass filters; capacitors; operational amplifiers; OTA transconductance value; PSPICE simulations; component-matching conditions; electronically tunable voltage-mode first-order allpass filter; grounded capacitor; single-ended OTA; single-ended operational transconductance amplifiers; Band pass filters; CMOS integrated circuits; Capacitors; Filtering theory; Power harmonic filters; Transconductance; allpass filter; analog signal processing; operational transconductance amplifier; voltage-mode circuit;

fLanguage

English

Publisher

ieee

Conference_Titel

Digital Information and Communication Technology and it's Applications (DICTAP), 2012 Second International Conference on

Conference_Location

Bangkok

Print_ISBN

978-1-4673-0733-8

Type

conf

DOI

10.1109/DICTAP.2012.6215363

Filename

6215363