Broadband turnstile waveguide junction
US6636127B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 23, 2002 |
| Grant date | Oct 21, 2003 |
| Priority date | — |
| Expiry date | Mar 19, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P5/19
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A broadband turnstile waveguide junction has four rectangular side ports that lie in a common plane, symmetrically about and orthogonal to a longitudinal axis of a circular port. The turnstile waveguide junction comprises a circular to quad-ridged waveguide transition disposed between the circular port and the four rectangular side ports. Quad-ridged waveguide ridges are provided that transition to a single ridged waveguide in the four rectangular side ports. A transition is provided from the single ridged waveguide to rectangular waveguide in the side ports. A center matching post, or pedestal, extends from the rear of the junction a predetermined distance toward the circular port. Another embodiment may use a quad-ridged waveguide having a port at the input in lieu of a circular to quad-ridged transition. Another embodiment may use single ridged waveguides at each side port instead of transitioning from single ridged waveguide to rectangular waveguide. Another embodiment may use a double ridged waveguide at each side port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.