A 200 MHz elliptic OTA-C filter in GaAs technology

Author

Wu, Pan ; Schaumann, Rolf

Author_Institution

Dept. of Electr. & Comput. Eng., Portland State Univ., OR, USA

fYear

1991

fDate

11-14 Jun 1991

Firstpage

1745

Abstract

Design consideration for fully integrated continuous-time filters operating at very high frequencies are presented. The OTA was designed in TriQuint´s 1 μm GaAs depletion-mode technology; the design considerations include frequency response, linearity, output impedance, tunability, stability of the common-mode output signal, temperature and wire inductances. In order to obtain the highest possible frequency response, the frequency limitations caused by the parasitic parameters are emphasized. As a result, an OTA with 7 GHz -3 dB frequency and very small parasitics, and a filter with 200 MHz cut-off frequency are designed

Keywords

III-V semiconductors; active filters; field effect integrated circuits; frequency response; gallium arsenide; linear integrated circuits; operational amplifiers; radiofrequency filters; stability; tuning; 200 MHz; 7 GHz; GaAs technology; RF filter; VHF; common-mode output signal; continuous-time filters; depletion-mode technology; elliptic OTA-C filter; frequency response; linearity; output impedance; stability; temperature; tunability; very high frequencies; wire inductances; Cutoff frequency; Filters; Frequency response; Gallium arsenide; Impedance; Linearity; Signal design; Stability; Temperature; Wire;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1991., IEEE International Sympoisum on

Print_ISBN

0-7803-0050-5

Type

conf

DOI

10.1109/ISCAS.1991.176228

Filename

176228