Waveguide to dipole radiator transition for rotating the polarization orthogonally
US8704718B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 15, 2010 |
| Grant date | Apr 22, 2014 |
| Priority date | — |
| Expiry date | Apr 13, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q9/285
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A radiating element having a transition from a waveguide to a dipole radiator. The radiating element utilizes the electric field of electromagnetic waves propagating in the waveguide to excite a section of a microstrip transmission line that is collinear with the waveguide's propagation direction. A waveguide septum guides the electric field of the electromagnetic waves into the transmission line and provides impedance matching. The transmission line can be formed on a first side of a dielectric substrate having a ground plane on a second side of the substrate. A first dipole leg is formed by making a ninety degree turn in the transmission line. A second dipole leg is extended from the ground plane and turned opposite from the first dipole leg. The transmission line includes a transformer having stepped or gradual changes in width of the transmission line leading to the dipole to provide additional impedance matching.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.