Design of a high-speed RF envelope detector with dynamic load and derivative superposition techniques - Details

author：

Ge, Yang (Ge, Yang.) ^[1] | Fu, Ximing (Fu, Ximing.) ^[2] | Yin, Yadong (Yin, Yadong.) ^[3] (Scholars：阴亚东) | El-Sankary, Kamal (El-Sankary, Kamal.) ^[4]

Indexed by：

EI Scopus

Abstract：

This　paper　presents　a　new　high　speed,　high　conversion　gain　envelope　detector　(ED)　using　dynamic　load　(DL)　and　2nd　order　nonlinearity　maximization　techniques.　To　enhance　the　conversion　gain　and　speed　of　conventional　ED　architectures,　the　proposed　ED　uses　a　dynamic　load　(DL)　technique　with　class-AB　architecture　to　increase　the　speed　and　tune　the　output　impedance　dynamically.　To　improve　nonlinearity　of　the　ED,　derivative　superposition　(DS)　is　used.　By　biasing　the　NMOS　and　PMOS　transistors　of　the　ED　initially　in　different　regions　of　operation,　2nd　order　derivative　of　transconductance　(g2)　is　maximized　which　increases　the　2nd　order　conversion　gain.　This　configuration　enables　low　power　consumption　without　compromising　the　conversion　gain.　Simulation　results　of　the　proposed　ED　in　0.18μm　CMOS　technology　show　a　high　data　rate　of　14.5Mbps　with　power　consumption　of　1.21μW.　©　2020　IEEE.

Keyword：

Dynamic loads Electric power utilization Memory architecture

Community：

[ 1 ] [Ge, Yang]Electrical and Computer Engineering, Dalhousie University, Halifax; NS, Canada
[ 2 ] [Ge, Yang]School of Physics and Information Engineering, Fuzhou University, Fuzhou, China
[ 3 ] [Fu, Ximing]Electrical and Computer Engineering, Dalhousie University, Halifax; NS, Canada
[ 4 ] [Fu, Ximing]School of Physics and Information Engineering, Fuzhou University, Fuzhou, China
[ 5 ] [Yin, Yadong]Electrical and Computer Engineering, Dalhousie University, Halifax; NS, Canada
[ 6 ] [Yin, Yadong]School of Physics and Information Engineering, Fuzhou University, Fuzhou, China
[ 7 ] [El-Sankary, Kamal]Electrical and Computer Engineering, Dalhousie University, Halifax; NS, Canada
[ 8 ] [El-Sankary, Kamal]School of Physics and Information Engineering, Fuzhou University, Fuzhou, China