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Using CXA X-Series signal analyser

Posted: 16 Jan 2013 ?? ?Print Version ?Bookmark and Share

Keywords:parabolic satellite antenna? TV reception? spectrum analyser?

A low-noise block down-converter (LNB) is the receiving device of a parabolic satellite antenna; the antenna type commonly used for satellite TV reception.

A LNB uses the superheterodyne principle to take a wide block (or band) of relatively high frequencies, such as C-band (3.4 to 4.2GHz) or Ku-band (11.7 to 12.2GHz), and amplifies and converts it to a low, intermediate frequency (IF) ranging from 950 to 2150MHz.

The unit consisting of the feedhorn plus the converter is called the LNB-feedhorn (LNBF). LNBFs are used for a wide variety of applications, such as television and internet access. LNBFs are advantageous because they are cost-effective.

During the mass production of LNBF devices, a spectrum analyser verifies the LNBF's RF performance to ensure that the LNBF devices achieve customer requirements and work properly.

View the PDF document for more information.

Originally published by Agilent Technologies at as "Using the N9000A CXA Signal Analyser Makes Testing Easier".

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