Power amplifiers Amplifiers, Radio frequency 74 Design and construction 45 Audio amplifiers 28 Microwave amplifiers 21 Design 16 Amplifiers (Electronics) 14 Electronics circuit design 10 Radio circuits 10 Wireless communication systems 9 Industrial electronics 5 Electric distortion 4 Prevention 4 Microwave circuits 3 Phase shifters 3 Solid state electronics 3 Amplifiers(Electronics) 2 Amplifiers, radio frequency 2 Broadband amplifiers 2 Feedforward control systems 2 Global Positioning System 2 Global system for mobile communications 2 Radio 2 Recording and reproducing 2 Sound 2 Transistor amplifiers 2 Transmitter-receivers 2 Wireless LANs 2 Computer programs 1 Computer-aided design 1