What is LNA : Selection Guide & Top Manufacturers

A Low Noise Amplifier (LNA) is an RF component designed to amplify weak signals while adding minimal noise. LNAs are critical in wireless communication systems, satellite receivers, GPS devices, radar systems, test equipment, and radio astronomy applications where preserving signal quality is essential for reliable operation.

In other words, LNA stands for Low Noise Amplifier. As the name implies, it amplifies the desired signal while minimizing the amplification of noise present within the signal. This makes it a crucial component in sensitive receivers.

Below is a list of well-known LNA manufacturers, suppliers, and vendors. When selecting an LNA, key specifications to consider include:

• RF Frequency Range: The operating frequency range over which the LNA performs optimally.
• RF Frequency Bandwidth: The width of the frequency band within the operating range.
• Gain: The amplification factor of the LNA.
• Gain Flatness: The consistency of the gain across the entire bandwidth.
• Noise Figure: A measure of the noise added by the LNA itself.

LNA Manufacturers/Suppliers

• NEC: www.nec.com Offers Low Noise Amplifiers for L, S, C, X, Ku, and Ka bands.
• Communications & Power Industries (CPI): www.cpii.com
• Locus Microwave (member of Codan group):
• CODAN: www.codan.com.au Provides RF LNAs, LNBs, BUCs, transceivers and more for various frequency bands.
• Comtech EF Data Corporation: www.comtechefdata.com Offers RF LNAs, VSAT solutions, modems, and other RF products like frequency converters and amplifiers.
• Servsat Communications, Inc.GA: www.servsat.com Supplies RF LNAs, LNBs, TWTAs, Modems, Transceivers, Converters, MUXs, Encoders, Decoders, and more.
• Teledyne Paradise Datacom Ltd.: www.paradisedata.com Offers SSPAs, BUCs, RF converters, Modems, and Low Noise Amplifiers (LNAs).
• TRIQUINT: www.triquint.com Specializes in ultra-low noise figure LNAs with high gain, along with amplifiers, duplexers, filters, transistors, and converters.
• NXP Semiconductor: www.nxp.com Provides RF LNA MMICs, MOSFETs, diodes, and sensors.
• Infineon: www.infineon.com Offers RF LNA MMICs and Transistors.
• Analog Devices: www.analog.com Manufactures RF LNAs, data converters, amplifiers, RF ICs, DSPs, MEMS, and more.
• Mini Circuits Inc.: www.minicircuits.com Supplies RF LNAs, couplers, amplifiers, mixers, synthesizers, oscillators, and more.

Summary

An LNA is a low-noise RF amplifier used to strengthen weak signals while maintaining signal integrity. Leading manufacturers provide LNAs for wireless communications, satellite systems, GPS receivers, radar equipment, and RF testing applications.