Dual-band electromagnetic coupler
US6577207B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 5, 2001 |
| Grant date | Jun 10, 2003 |
| Priority date | — |
| Expiry date | Nov 27, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P1/172
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A coupler couples signal by way of a cluster of four square waveguide ports at a high frequency band, or by way of a two ridged waveguide ports at a lower frequency band, to a common square port. The coupling path includes a branch coupler for combining the TE2,0 and TE0,2 high-band signals from the square ports with the TE1,0 low-band signals from the two ridged ports. The branch coupler is coupled to a mode converter or transformer, which allows the TE2,0 and TE0,2 mode signals to pass through unchanged, and which converts the TE1,0 mode signals from the two ridged ports to TE1,0, TE0,1 in a square port. A ridged square waveguide section couples the square port of the mode converter to the common square port. The ridged square waveguide section includes ridges and phase shifters which delay components of the high-band modes to produce TE1,0 and TE0,1 modes at the common port in both bands.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.