RF Glossary: U | Terms Starting with U

UHF (Ultra High Frequency) — The frequency range from 300 MHz to 3 GHz, used for television broadcasting, cellular communications, and radar.

Unilateral — A device or network where the signal flows in only one direction, with no reverse transmission from output to input.

Upconverter — A frequency conversion device that translates an IF signal to a higher RF frequency for transmission using a mixer and local oscillator.

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