Quasi-optical polarization duplexed balanced mixer
US4509209A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 23, 1983 |
| Grant date | Apr 2, 1985 |
| Priority date | — |
| Expiry date | Mar 23, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03D7/1408
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An integrated planar antenna-mixer device for microwave reception utilizes a slot-ring antenna and a diode quad connected thereto. The device comprises a planar metallic sheet backed on one side by a dielectric layer. A circular ring pattern is cut from the metallic sheet forming a slot ring antenna with a central disc and a surrounding ground plane. Diodes of a diode quad are connected between the central disc and the ground plane with adjacent diodes being separated by 90.degree.. The incoming microwave signal is directed perpendicular to the device plane and polarized in a direction orthogonal to a local oscillator signal similarly directed. Operation is quasi-optical without waveguides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.