ULF/VLF power line communications coupler
US10277277B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2018 |
| Grant date | Apr 30, 2019 |
| Priority date | — |
| Expiry date | Aug 30, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2203/5483
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A circuit (100) for coupling an amplifier (1) in an electrical power distribution system with the amplifier electrically and physically isolated from a power line of the system. The amplifier generates arbitrary signal waveforms injected into the power line. A transformer (T1) has a primary and a secondary side with the amplifier located on the primary side and the secondary side connected to the power line. A resistor (R1) series connected with the primary side of the transformer is sized to accommodate a minimum load impedance of the amplifier and minimize power dissipation. A resonant circuit interposed between the secondary side of the transformer and the power line has values for a capacitor (C1) and an inductor (L3) forming the resonant circuit chosen to peak the amplitude of the arbitrary signal waveform at the frequency of a waveform propagated through the power line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.