Evanescent Resonator Frequency Multiplier.
Abstract
This invention relates to a frequency multiplier for electromagnetic waves in which multiples of the input frequency propagate, while the input frequency evaneces. A rectangular waveguide or other suitable wave conveying element with a cut-off frequency above the input frequency but below the output frequency contains the multiplying structure. The input frequency is multiplied using a post located in the waveguide or other element adjacent to the source of input waves. The post may define a multiplier gap between one of its surfaces and a wall of the waveguide or other element, in which case the multiplier gap may contain a multipactor between its surfaces which generates multiples of the input frequency. The multiplier gap may alternatively contain a non-linear element responsive to a high electric field, such as a ferroelectric material, which also generates multiples of the input frequency. Alternatively, the post may be surrounded by a non-linear element of ferromagnetic material responsive to a strong magnetic field. In either embodiment, waves at the same frequency as the input waves cannot propagate, but waves above the cut-off frequency propagate through the waveguide or other element to an output aperture. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 03, 1983
- Accession Number
- ADD010612
Entities
People
- Joseph H. Hartley
Organizations
- United States Army