Title :
A feedforward compensated high-linearity differential transconductor for RF applications
Author :
Lim, Su-Tarn ; Long, John R.
Author_Institution :
Fac. of EEMCS, Delft Univ. of Technol., Netherlands
Abstract :
A transconductor consisting of differentially-excited common-base and a feedforward emitter-coupled pair is presented. Simulations show over 40dB improvement in harmonic distortion for 80mV-pk input amplitude compared to a conventional differential pair, while offering 38GHz operating bandwidth, 45Ω (real) input impedance, and 3.4dB noise figure at 2.4GHz at 5mA bias current.
Keywords :
differentiating circuits; feedforward; harmonic distortion; intermodulation distortion; radiofrequency interference; superheterodyne receivers; 2.4 GHz; 3.4 dB; 38 GHz; 45 ohms; 5 mA; 80 mV; RF applications; differential pair; differentially-excited common-base configuration; feedforward compensated differential transconductor; feedforward emitter-coupled pair; harmonic distortion; high-linearity differential transconductor; Bandwidth; Circuits; Feedback; Linearity; Nonlinear distortion; Radio frequency; Resistors; Thermal resistance; Transconductors; Voltage;
Conference_Titel :
Circuits and Systems, 2004. ISCAS '04. Proceedings of the 2004 International Symposium on
Print_ISBN :
0-7803-8251-X
DOI :
10.1109/ISCAS.2004.1328142
