The book is devoted to the use of the MATLAB matrix system in radio engineering calculations and in modeling of radio-electronic devices and systems. The latest versions of MATLAB R2007a,b/2008a,b/2009a with Simulink 6/7 extension packages, Signal Processing Toolbox, Filter Design Toolbox, RF Toolbox and Blockset, Wavelet Toolbox, Control Systems, Sim. Power. Systems et al . The latest Simscape and Sim. packages are described Electronics Modeling Electronic Circuits. Along with the functions of the command mode, the interactive and visually oriented package toolkit with a GUI graphical user interface and mathematical modeling of systems and devices in the Simulink 6/7. environment is described. MATLAB integration with modern digital radio measuring devices and virtual laboratories for instrument management and processing of real oscillograms is described . For scientists, engineers in the field of signal and image processing and filtering, students and teachers of universities and universities .