Microwaves 124 Microwaves, RF and Optical Engineering 124 Engineering 72 Physics 45 Communications Engineering, Networks 30 Optics, Optoelectronics, Plasmonics and Optical Devices 29 Telecommunication 27 more ... Optical and Electronic Materials 24 Optical materials 24 Optical engineering 16 Electronics 14 Electronics and Microelectronics, Instrumentation 14 Optics and Electrodynamics 14 Circuits and Systems 13 Signal, Image and Speech Processing 13 Electrical Engineering 11 Laser Technology, Photonics 11 Systems engineering 11 Solid State Physics 10 Applied and Technical Physics 9 Computer Communication Networks 9 Quantum Optics 9 Electrical engineering 8 Magnetism 7 Magnetism, Magnetic Materials 7 Materials 6 Materials Science 6 Astronomy, Observations and Techniques 5 Computer engineering 5 Electromagnetism 5 less ...