Downconverter-Feedhorn Testing Using CXA Signal Analyzer
应用文章
Overview
A low-noise block downconverter (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 4.2 GHz) or Ku-band (11.7 to 12.2 GHz), and amplifies and converts it to a low, intermediate frequency (IF) ranging from 950 to 2150 MHz.
The unit consisting of the feedhorn plus the converter is called the LNBfeedhorn (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 analyzer verifies the LNBF’s RF performance to ensure that the LNBF devices achieve customer requirements and work properly.
The Keysight Technologies, Inc. N9000A CXA signal analyzer is ideal for this application, providing a well-balanced choice between high throughput and low cost of ownership. Its excellent RF performance and robust measurement capabilities make it ideal for testing:
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