Title :
Transformer-tuned front-ends for heterodyne optical receivers
Author :
Kan, J.X. ; Garrett, I. ; Jacobsen, G.
Author_Institution :
Technical University of Denmark, Electromagnetics Institute Technical, Lyngby, Denmark
Abstract :
We present measured noise spectra for heterodyne optical receivers with front-end tuning based on a T-equivalent circuit of transformer coupling. A noise spectral density below 6pA/¿(Hz) over a 1-3 GHz bandwidth is demon-strated, even with parasitic capacitances totalling 2 pF.
Keywords :
field effect transistor circuits; optical communication equipment; preamplifiers; receivers; 1.3 GHz; 2 pF; T-equivalent circuit of transformer coupling; bandwidth; front-end tuning; heterodyne optical receivers; measured noise spectra; noise spectral density; parasitic capacitances; transformer-tuned front-ends;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19870557
