Design and construction 15 Microwave circuits 14 Radio circuits 9 Amplifiers, Radio frequency 7 Design 6 Wireless communication systems 5 Microwave devices 4 Microwave integrated circuits 4 Power amplifiers 4 Computer-aided design 3 Electric circuit analysis 3 Microwave communication systems 3 Microwaves 3 Oscillators, Microwave 3 Radio 3 Computer simulation 2 Data processing 2 Electric filters 2 Electric filters, Digital 2 Equipment and supplies 2 Microwave amplifiers 2 Radio frequency oscillators 2 Transmitters and transmission 2 Analog electronic systems 1 Bipolar integrated circuits 1 Computer programs 1 Differential equations 1 Digital techniques 1 Electric circuits, Nonlinear 1 Electric filters, Active 1