Resources Contact Us Home Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE     Logarithmic intermediate frequency amplifier circuit operable on low voltage Image Number 5 for United States Patent #5475328. In a logarithmic intermediate frequency amplifier circuit including first through M-th intermediate frequency amplifiers which are connected in cascade and first through M-th double balanced differential circuits which are connected to the first through the M-th intermediate frequency amplifiers, respectively, each of the first through the M-th double balanced differential circuits comprises primary, secondary, and tertiary differential circuits. The primary differential circuit includes a pair of transistors each of which is one of NPN and PNP types and which are connected to a first constant current source. The secondary differential circuit includes a pair of transistors each of which is another one of NPN and PNP types and which are connected to a second constant current source. The tertiary differential circuit includes a pair of transistors each of which is the other one of the NPN and the PNP types and which are connected to a third constant current source. The primary differential circuit is connected to the second and the third constant current sources and delivers a differential output to the secondary and the tertiary differential circuits so as to reduce currents of the second and the third constant current sources.       Recently Added Patents Focus detection apparatus Method for reducing crosstalk in image sensors using implant technology Algal desaturases Potted plant stabilizer Power supply arrangement with a first voltage supply device and a second voltage supply device Exposure determining method, method of manufacturing semiconductor device, and computer program product Covalently grafted pharmaceutically active polymers   Randomly Featured Patents Automatic single stack trap machine Metal halogen battery construction with combustion arrester to prevent self propagation of hydrogen-halogen reactions Transition metal olefin polymerization catalyst having cyclopropenyl derived ligands Anastomosis devices, kits and method Portable wireless router Polarization-engineered transverse-optical-coupling apparatus and methods Duping arrangement for laser distance measuring devices Output voltage stabilizer for switching mode power supply Method for making integrated circuits having features with reduced critical dimensions Vehicle fender flare © 2006-2008 PatentGenius. All Rights Reserved.