Well-established theories exist for RF breakdown, but they are based on simplified, mainly analytical assumptions which do not always represent the complexity of the component. Some applications where RF breakdown can occur include satellite operation and launching particle accelerators high power microwave sources deep space networks and radar systems. They include increase of signal reflection and signal noise generation of non-linearities in harmonics and intermodulation products outgassing caused by the particle impact on the device walls and temperature increase, which can result in the destruction of the device. When this happens, the consequences can be harmful. Electrons are accelerated by the EM field and impact on the gas molecules the molecules are then ionized, electrons are released and discharge develops. Ionization breakdown involves breakdown in a gas. Secondary electrons are then released, and discharge develops.
Multipactor involves breakdown in a vacuum, where electrons are accelerated by the EM field and impact on the device walls.
RF breakdown encompasses two main phenomena. The electromagnetic (EM) field densities in these and other components are steadily increasing, which means that there is a higher risk of RF breakdown inside these devices. As radio frequency (RF) systems advance, they operate at higher and higher frequency levels, for numerous reasons: to increase the overall throughput in satellites, for example, or to reach greater particle energies in particle accelerators, or increase power in high power microwave sources.
0 kommentar(er)
