Technical Articles

How Telecommunication Duplexers for Base Stations Work and What to Know About Duplexers

The term duplexer refers to an electronic device that enables forward and reverse (transmit and receive) signals to travel in a single signal path. For telecommunication applications with densely populated towers and expensive premiums on leasing antenna space, duplexers can allow a single antenna to operate as a transmit and receive antenna. As not all duplexers are created equal, there are several key aspects to consider when evaluating duplexers for a specific application.

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How Antennas Work

An antenna is a mechanical structure by which electromagnetic waves are sent out or received.

An antenna accomplishes this by being made so that its structure will be resonant at the frequency or frequencies of interest. At the heart of most common antennas is what is known as a dipole. In the simplest form this can be two metal rods, typically one pointed up and the other pointed down with the feed point being between them.

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