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Power-line communications is a promising technology to help automate buildings, since it utilizes the in situ power cabling as a communications channel. However, couplers are required to inject and extract the communication signal from the power grid. Most power-line communications couplers make use of a small transformer to adapt impedance levels while also providing galvanic isolation. The cost...
The impedance variation in power-line networks is a well known problem in power-line communications (PLC). These variations arise when different electric loads are connected and, or disconnected to the power line network at different times. This causes a problem in trying to achieve maximum power transfer, hence the need for a matching circuit. Previously we investigated transformerless power-line...
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