Twisted waveguide and wireless device
US7212087B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 5, 2004 |
| Grant date | May 1, 2007 |
| Priority date | — |
| Expiry date | Oct 7, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P1/022
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
H plane and E plane of a second rectangular waveguide element are inclined at an angle of 45° with respect to H plane and E plane of a first rectangular waveguide element. A connection element disposed between the first and second rectangular waveguide elements has an inner periphery that surrounds a central axis extending in a direction of electromagnetic-wave propagation. The inner periphery includes surfaces parallel to H plane and E plane of the first rectangular propagation path element, and these surfaces form a staircase such that abutting sections between the surfaces parallel to H plane and the surfaces parallel to E plane constitute projections. The staircase is inclined in a direction corresponding to a direction in which H plane of the second rectangular propagation path element is inclined. Accordingly, an electric field is concentrated in the projections of the connection element, and a plane of polarization of an electromagnetic wave propagating through the connection element is rotated from a plane of polarization in the first rectangular waveguide element towards a plane of polarization in the second rectangular waveguide element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.