Here’s a structured technical article on the working principles of signal amplifiers.

In the field of wireless communication and signal processing, dB, dBm, and dBc are commonly used units of measurement. They are employed to describe parameters such as signal strength, power, and signal-to-noise ratio. This article will provide a detailed explanation of the concepts, applications, and relationships between these three units, and explore their importance in wireless communication.

A multiplexer is a device with a single input port and multiple output ports, including duplexers, triplexers, and quadruplexers. Although it sounds complicated, there are some obvious differences in principle and application.