Transmitter performance monitor and antenna matching system
US4041395A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 2, 1976 |
| Grant date | Aug 9, 1977 |
| Priority date | — |
| Expiry date | Aug 2, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B17/18
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system for detecting, indicating, and adjusting the degree of mismatch between a transmitter and an electrical transmission line, with additional measurement of transmitter performance parameters. This system uses a three-wire transmission line sensor to generate signals proportional to the forward and reflected waves on the main transmission line. These signals are applied to a special-purpose computer which automatically calculates the standing wave ratio (SWR) on the transmission line. An adjustable matching network is included to allow adjustment of the standing wave ratio to whatever value is required for proper transmitter operation. Additional sensors generate signals which are applied to the same computer, which automatically calculates the modulation percentage of the transmitter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.