Three-state, two-output variable RF power divider
US4956621A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 8, 1987 |
| Grant date | Sep 11, 1990 |
| Priority date | — |
| Expiry date | Dec 8, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P5/04
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A three-state, two-output R.F. power divider is configured as a microstrip device having an input port and first and second output ports. Between these three ports there is disposed a substantially T-shaped microstrip transmission line structure such that the input port is coupled to a base portion of the T-shaped structure and the first and second output ports are coupled to opposite ends of a top portion of the T-shaped structure. A substantially U-shaped microstrip transmission line structure is intercoupled with the T-shaped structure such that end portions of the U-shaped structure are coupled to the top portion of the T-shaped structure and a bottom portion of the U-shaped structure is coupled to the base portion of the T-shaped structure. A first PIN diode is coupled between a first location of the T-shaped structure and a ground plane brassboard underlying the dielectric layer on which the microstrip metalization is formed. Second and third PIN diodes are coupled between second and third respective locations of the U-shaped structure and the ground plane. Power is selectively coupled from the input port and the two output ports by contollably biasing the shunting action of …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.