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Traveling-wave tubes
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Kory, Carol L. |
| Copyright Year | 1998 |
| Description | The traveling-wave tube (TWT) is a vacuum device invented in the early 1940's used for amplification at microwave frequencies. Amplification is attained by surrendering kinetic energy from an electron beam to a radio frequency (RF) electromagnetic wave. The demand for vacuum devices has been decreased largely by the advent of solid-state devices. However, although solid state devices have replaced vacuum devices in many areas, there are still many applications such as radar, electronic countermeasures and satellite communications, that require operating characteristics such as high power (Watts to Megawatts), high frequency (below 1 GHz to over 100 GHz) and large bandwidth that only vacuum devices can provide. Vacuum devices are also deemed irreplaceable in the music industry where musicians treasure their tube-based amplifiers claiming that the solid-state and digital counterparts could never provide the same "warmth" (3). The term traveling-wave tube includes both fast-wave and slow-wave devices. This article will concentrate on slow-wave devices as the vast majority of TWTs in operation fall into this category. |
| File Size | 949888 |
| Page Count | 26 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19990004616 |
| Archival Resource Key | ark:/13960/t3518xw68 |
| Language | English |
| Publisher Date | 1998-02-09 |
| Access Restriction | Open |
| Subject Keyword | Electronics And Electrical Engineering Amplification Radio Frequencies Vacuum Wave Propagation Electron Beams Traveling Wave Tubes Microwave Frequencies Solid State Devices High Frequencies Kinetic Energy Electronic Countermeasures Satellite Communication Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
