Title :
A Wideband InP DHBT True Logarithmic Amplifier
Author :
Chuang, Yu-Ju ; Cimino, Kurt ; Stuenkel, Mark ; Feng, Milton ; Le, Minh ; Milano, Raymond
Author_Institution :
Dept. of Electr. & Comput. Eng., Illinois Univ., Urbana, IL
Abstract :
A wideband logarithmic amplifier is demonstrated in this paper using InP-InGaAs double heterojunction bipolar transistor technology. The amplifier uses cascaded gain stages including the limiting and unity amplifiers to achieve a piecewise approximation to the ideal logarithmic response. The performance of 43-dB dynamic range, 22-GHz bandwidth, and <plusmn2-dB log error is achieved. The integrated circuit consumes 650 mW and has a chip dimension of 1times0.8 mm2
Keywords :
III-V semiconductors; gallium arsenide; heterojunction bipolar transistors; high-speed techniques; indium compounds; wideband amplifiers; 22 GHz; 650 mW; InP-InGaAs; cascaded gain stages; heterojunction bipolar transistors; highspeed integrated circuits; limiting amplifiers; log error; logarithmic response; unity amplifiers; wideband true logarithmic amplifiers; Bandwidth; Broadband amplifiers; Circuits; DH-HEMTs; Dynamic range; Indium gallium arsenide; Indium phosphide; Optical amplifiers; Radar detection; Radiofrequency amplifiers; Heterojunction bipolar transistors (HBTs); high-speed integrated circuits; logarithmic amplifiers;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.2006.883239
