Accession Number:

ADA458532

Title:

Microfabricated Traveling Wave Tubes for High Power Millimeter-Wave and THz-regime Sources

Descriptive Note:

Final rept.

Corporate Author:

WISCONSIN UNIV-MADISON DEPT OF ELECTRICAL AND COMPUTER ENGINEERING

Report Date:

2006-10-31

Pagination or Media Count:

15.0

Abstract:

The millimeter-wave MMW and terahertz THz-regime portions of the electromagnetic spectrum have enormous application potential, including high-data-rate communications, remote sensing and threat detection, high resolution radar, biomedical imaging, and spectroscopic analysis. To exploit this potential, new sources of coherent electromagnetic radiation are needed in the frequency range of 100 - 1000 GHz. The ideal sources would provide high power with high efficiency in a compact, lightweight, and low-cost package. Many of the applications require bandwidths of several percent relative or greater and both amplifiers and oscillators are needed. Vacuum electronic devices, such as traveling wave tubes TWTs meet many of these requirements but are constrained by complex fabrication methods that become impractical at frequencies of 100 GHz and above. This research is investigating new methods for TWT fabrication, derived from semiconductor microfabrication technologies. Various microfabrication techniques are under investigation, to identify those that are optimally suited. One critical piece of research is to measure the passive microwave losses of a 400 GHz waveguide made by these microfabrication methods. The final goal includes a study of the characteristics of a microfabricated TWT using a new electron-beam source designed for MMW and THz-regime vacuum device research

Subject Categories:

  • Industrial Chemistry and Chemical Processing
  • Electrical and Electronic Equipment
  • Electromagnetic Pulses

Distribution Statement:

APPROVED FOR PUBLIC RELEASE