What is LNB in VSAT : Selection Guide & Top Manufacturers

An LNB (Low Noise Block Downconverter) is a key component in VSAT and satellite communication systems that receives high frequency satellite signals and converts them to lower frequencies for processing by indoor equipment. LNBs are widely used in broadband satellite networks, television broadcasting, and enterprise VSAT deployments.


LNB is the short form of Low Noise Block Converter. It’s a module that combines the functionalities of an LNA (Low Noise Amplifier) and a Down Converter. Essentially, the LNB performs low noise amplification and frequency down conversion on the incoming RF signal.

LNB = LNA + Down Converter

The LNB is primarily used in VSAT (Very Small Aperture Terminal) applications. For instance, in a C-band VSAT system, the LNB converts the input RF frequency of around 3.7 GHz to a 70 MHz IF (Intermediate Frequency) carrier frequency.

LNB Manufacturers

Here’s a list of some Low Noise Block Converter manufacturers:

• General Dynamics Satcom technologies: www.gdsatcom.com
• Comtech EF Data Corporation: www.comtechefdata.com - A popular LNB manufacturer globally.
• ST Electronics: www.stee.stengg.com/group/satcom/product/agilis/
• MITEQ: www.miteq.com - LNB manufacturer
• Novella Satcoms Ltd.: www.novella.co.uk
• SMW Swedish Microwave AB: www.smw.se - A leading manufacturer of LNBs.
• Teledyne Paradise Datacom Ltd.: www.paradisedata.com

Summary

An LNB is a satellite receiver component that converts high-frequency microwave signals into lower frequencies for communication equipment. Manufacturers offer LNB solutions for VSAT networks, satellite broadband, and television broadcasting systems.