OTA-based electronically tunable elliptic high-order current-mode ladder band-pass filter

Author

Wongprommoon, Natapong ; Prommee, Pipat

Author_Institution

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

fYear

2014

fDate

1-4 Dec. 2014

Firstpage

133

Lastpage

136

Abstract

This paper presents Elliptic high-order current-mode ladder band-pass filter based on OTA-C that can be operated in high frequency. High-order band pass filter is designed based on Elliptic Ladder band-pass filter prototype. The proposed filter contains lossy and lossless integrators. The frequency responses of band-pass filter can be electronically tuned between around 100kHz and 10MHz by adjusting bias current form 0.15 μA to 1500 μA with 7.74mW of dynamic power consumption along tuning the bias current. The circuit used 1.5 V power supply and used of ground capacitors which suit to integrated circuit. THD of band-pass filter can be obtained less than 1% along the operating frequencies. PSPICE simulation results are carried out to confirm the theory by using TSMC 0.18μm CMOS technology.

Keywords

CMOS analogue integrated circuits; band-pass filters; current-mode circuits; frequency response; harmonic distortion; ladder filters; operational amplifiers; OTA-C; OTA-based electronically tunable band-pass filter; PSPICE simulation; THD; TSMC CMOS technology; bias current; current 0.15 muA to 1500 muA; dynamic power consumption; elliptic high-order current-mode ladder band-pass filter; frequency response; ground capacitors; integrated circuit; lossless integrator; lossy integrator; power 7.74 mW; size 0.18 mum; voltage 1.5 V; Band-pass; Elliptic; High-order; OTA-C;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Signal Processing and Communication Systems (ISPACS), 2014 International Symposium on

Conference_Location

Kuching

Type

conf

DOI

10.1109/ISPACS.2014.7024439

Filename

7024439