Travelling Wave Tube Amplifier Micrometre (10^-6 m)
                                                            
                                                     
                        
                                                
                        
                        
                            A combination of a power supply, a modulator (for pulsed systems), and a traveling-wave tube, often packaged in a common enclosure.
                                                            
                                                     
                        
                                                
                        
                        
                            Traveling Wave Tube Amplifier. High-power RF slow wave amplifier commonly used in spacecraft transponders and earth station HPA equipment.
                                                            
                                                     
                        
                                                
                        
                        
                            Travelling Wave Tube Amplifier. A high power amplifier based on tube technology. Normally employed when high output power levels are required.
                                                            
                                                     
                        
                                                
                        
                        
                            See Travelling-Wave-Tube Amplifier.
                                                            
                                                     
                        
                                                
                        
                        
                            Traveling Wave Tube Amplifier. Satellite electronic components that provide power for the transponders (in watts).
                                                            
                                                     
                        
                                                
                        
                        
                            Travelling Wave Tube Amplifier. A wideband microwave amplifying device in which power is added to a carrier as it propagates down a tube.