Adjustable microwave power divider
US5467063A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 21, 1993 |
| Grant date | Nov 14, 1995 |
| Priority date | — |
| Expiry date | Sep 21, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P5/12
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An adjustable microwave power divider circuit (50), providing the capability of adjusting the power division ratio after the device has been fabricated. The device includes three 90 degree transmission line networks (60, 70, 80) incorporating open transmission line stubs (66, 76, 86), two networks (70, 80) as power division networks, and the third network (60) as an input impedance matching network. A series isolation resistor (90) is connected across the outputs of the power division networks. In operation, an input signal is split between the two power division networks (70, 80) with equal voltage and phase. The power split between the two outputs is adjusted by adjusting the open stub length, thereby varying the characteristic impedance level between the two power division networks. Any signal reflected back into any one of the power divider networks is absorbed by the isolation resistor. The stub length can be trimmed after device fabrication using a laser or abrasion system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.