RF Glossary: L | Terms Starting with L

L-Band — The frequency range from 1 to 2 GHz, used in GPS, mobile satellite, and telemetry systems.

LNA (Low Noise Amplifier) — An amplifier designed to add minimal noise to the received signal, placed at the front end of a receiver chain to preserve system sensitivity.

LNB (Low Noise Block) — A combined low-noise amplifier and block downconverter mounted at the focal point of a satellite dish antenna.

LO (Local Oscillator) — An oscillator used in superheterodyne receivers and transmitters to generate the signal that drives the mixer for frequency conversion.

Load Pull — A measurement technique where the impedance presented to a device under test is systematically varied to characterize performance under different load conditions.

Loss Tangent (tan delta) — The ratio of the imaginary to real part of a dielectric's complex permittivity, characterizing the material's RF energy dissipation.

Lowpass Filter (LPF) — A filter that passes frequencies below a specified cutoff frequency while attenuating higher frequencies.

Need RF expertise?

Talk to Our Engineers

For technical questions or component specifications, our engineering team is here to help.

Get in Touch