In radio receivers, picking faint signals out of the ubiquitous background noise requires low noise amplifiers that maintain an acceptable signal-to-noise ratio. These amplifiers are low power devices that use special matching circuits and low-noise active elements that are placed as close to the receiving antenna as possible. Generally, low noise amplifiers become useful above 30-50MHz. Below 30MHz, external noise and interference dominate the radio channel. At UHF and above, the use of low noise amplifiers in receivers is essential.

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Most of our low noise amplifier designs use discrete and integrated solutions from UHF to Ka band. In many cases, in L-band and above, the LNA is directly integrated in the antenna for use in navigation, communications and radar applications.