NTIA Report TR-04-410

Gain Characterization of the RF Measurement Path

February 2004

J. Wayde Allen

Abstract: In radio frequency (RF) measurements the gain (or loss) of the signal path connecting the measurement equipment to the measurement reference plane must be accounted for. This tutorial paper discusses the various definitions of gain, and how to determine the gain using either a calibrated signal generator, noise source, or network analyzer.

Keywords: available power; cable loss; calibration; delivered power; gain; mismatch

• Report

Disclaimer: Certain commercial equipment, components, and software are identified in this report to specify adequately the technical aspects of the reported results. In no case does such identification imply recommendation or endorsement by the National Telecommunications and Information Administration, nor does it imply that the equipment or software identified is necessarily the best available for the particular application or uses.

To request a reprint of this report, contact:
Margaret Luebs, Publications Officer
Institute for Telecommunication Sciences
Voice: (303) 497-3572
info@its.bldrdoc.gov

For technical information concerning this report, contact:
Wayde Allen, Electronics Engineer
Institute for Telecommunication Sciences
Voice: (303) 497-5871
wallen@its.bldrdoc.gov