Quasi-optical coupler with reduced diffraction
US5652554A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 20, 1995 |
| Grant date | Jul 29, 1997 |
| Priority date | — |
| Expiry date | Sep 20, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2225/025
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A microwave coupler with improved efficiency receives microwave energy in a principal mode TEm,n (m and n being whole numbers and n being not zero) and gives a quasi-optical energy beam. It comprises a mode converter that receives energy in the principal mode and converts a part of it into an auxiliary mode TEp,q (with p and q being whole numbers, q close to one and not zero, p greater than q). The energy in the principal mode and in the auxiliary mode get propagated in a radiator and emerge in the form of the quasi-optical beam by an aperture that coincides with a minimum electrical field resulting from the electrical field of the principal mode and the electrical field of the auxiliary mode. The disclosure has applications notably to the field of gyrotubes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.