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Program for RFI Spectrum Analysis Disclosure Number: IPCOM000062700D
Original Publication Date: 1986-Dec-01
Included in the Prior Art Database: 2005-Mar-09

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Lanham, TE [+details]


In radio frequency interference (RFI) testing a spectrum analyzer provides data giving radiation levels over a frequency range divided into 1001 lines or bands. The program level searches for the largest peaks in the spectrum within a given margin of a specific level. When the largest peak is found, it and close lines on either side are deleted; the program then looks for the next largest peak. An item under test is placed on a turntable. An antenna at variable/distance height detects electromagnetic interference using a spectrum analyser as the item is rotated. At each selected antenna position the spectrum analyzer records radiation levels for 1001 lines as required in international specifications.