The second term in the denominator of (5) represents the nonlinear emitter resistance of the amplifying transistors Q 3 and Q 6 , which is the primary source of IMD in the doubleAbstract A further development in the application of negative feedback techniques to active double-balanced mixers is described, in which the concept of single-transformer lossless feedback is employed to improve both t...

The main technological issues and circuit design challenges arising in the development and manufacturing of the RF front-end electronics for the next generation (terrestrial or space-born) radio communication and remote sensing systems will be synthetically outlined, with the aim of also pointing out both the specific design tool requirements and a number of related research topics. Actually, t...