Plural rectangular waveguides having longer cross-sectional lengths based on shorter waveguide line lengths
US8054142B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 6, 2009 |
| Grant date | Nov 8, 2011 |
| Priority date | — |
| Expiry date | Aug 5, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P3/121
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Long-side length a1 to a5 of rectangular waveguide tubes in a long-side direction (magnetic field direction) become greater, the shorter a line length is (the closer a rectangular waveguide tube is to the center). ai and Li are set such that line lengths L1 to L5 of each rectangular waveguide tube is Li=mλgi (i=1 to 5, and m is a positive integer number), with guide wavelengths of each rectangular waveguide tube, determined by the length a1 to a5, as λg1 to λg5. Hence, the line length Li of each rectangular waveguide tube can be arbitrarily set, while maintaining a phase relationship between high frequency signals transmitted by each rectangular waveguide tube. When a difference in line lengths between rectangular waveguide tubes is set to be shorter, the degree of freedom in arrangement of the rectangular waveguide tubes can be improved while suppressing the degradation of propagation characteristics caused by temperature change.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.