DefinePK

Abstract

The advanced circuit engineering principle of construction of the low-sensitive CMOS selective amplifiers (SA) of HF and SHF ranges and interface ICs is developed. The suggested solutions provide the possibility of the cascade connection of several SAs without separating capacitors and additional circuits of matching of the static mode. The considered SAs are characterized by the potential possibility of the choice of resistances of the frequency setting circuit in a wide range of the rating values. The suggested architecture of SA in contrast with the well-known ones reduces the asymptotic attenuation of signals not only in the traditional sphere of high-frequency range but also in the sphere of low-frequency one (up to -70 dB) without additional separating capacitors. The results of the mathematical analysis and computer simulation of SA on the components of SiGe technological process SG25H1 are given.