System for measuring noise figure of a radio frequency device

Details System for measuring noise figure of a radio frequency device System for measuring noise figure of a radio frequency device

1998-10-28

2000-09-05

Metjahic, Safet

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Parameter related to the reproduction or fidelity of a...

324614, G01S 740

Patent

active

06114858&

ABSTRACT:
Noise factor of a radio-frequency device under test (DUT) is determined by driving the input of the DUT with a randomly modulated sine wave and measuring the power of a resulting DUT OUTPUT signal within each of a set of equally-sized frequency bands. The noise factor is computed as a combination of the power of the modulated sine wave within each of a plurality of frequency bands and the measured power of the DUT OUTPUT signal within that same plurality of frequency bands.

REFERENCES:
patent: 4491783 (1985-01-01), Sawayama et al.
patent: 4905308 (1990-02-01), Davidson
patent: 5191294 (1993-03-01), Grace et al.
patent: 5970429 (1999-10-01), Martin

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