I need to rectify 100micro v ac to 1 v dc. can u suggest a good rectifier schematic. The most rectifier circuit i found on google did to wrok in this micro volt range.
100 uV at 100 kHz is no problem at all for a low-noise amplifier. If you somehow think an LNA would produce more noise than a discrete rectifier, well, you're wrong. The right tool would be the LNA.