Spectrum measurement system comprising PC and power meter

Details Spectrum measurement system comprising PC and power meter Spectrum measurement system comprising PC and power meter

2003-12-01

2008-03-18

Ahn, Sam K. (Department: 2611)

Pulse or digital communications

Testing

Reexamination Certificate

active

07346101

ABSTRACT:
A spectrum measurement system, comprising a preamplifier for receiving and pre-amplifying input signals from a wireless communication device; a down converter coupled to the preamplifier for decreasing frequencies of the input signals amplified and generating corresponding intermediate frequency (IF) signals; an IF filter coupled to the down converter for filtering the IF signals based on a predetermined frequency resolution and predetermined center frequency; a power meter coupled to the IF filter for measuring powers of the IF signals; and a personal computer coupled to the power meter via a first control interface operation to generate frequencies corresponding to the powers, the PC being operative to read frequencies, convert the frequencies into real frequencies based on a calibration table, and plot a frequency analysis graph.

REFERENCES:
patent: 6392397 (2002-05-01), Thomas
patent: 2004/0042563 (2004-03-01), Najarian et al.

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