Design and construction 42 Microwave circuits 42 Radio circuits 20 Wireless communication systems 12 Equipment and supplies 11 Electronic circuit design 9 Radio frequency 8 Computer-aided design 7 Electric circuits, Nonlinear 4 Microwave integrated circuits 4 Modulation (Electronics) 4 Semiconductors 4 Data processing 3 Radio 3 Radio frequency integrated circuits 3 Receivers and reception 3 Transmitters and transmission 3 Differential equations 2 Electric circuit analysis 2 Mathematical models 2 Mathematics 2 Parametric devices 2 Digital electronics 1 Frequency synthesizers 1 Handbooks, manuals, etc 1 Materials 1 Microwave communication systems 1 Modulation (electronics) 1 Nonlinear theories 1 Phase-locked loops 1