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Reducing Effects of LO Cable Movement in Antenna and Long Distance VNA Measurements

Published

Author(s)

David R. Novotny

Abstract

We evaluate a method for estimating and removing local oscillator cable drift in transmission measurements using a network analyzer. The geometric mean of the measured forward and reverse transmission, including drift, can be used to estimate the actual transmission without drift. This requires the measurement of passive, symmetrical transmission measured with a bi-directional two-port remote-mixing down-converting measurement system. This method is being used in antenna measurements where cable movement is unavoidable. It is viable for other calibrations and measurements using remote-mixing systems and frequency extenders at higher frequencies. This method is being used in antenna measurements where cable movement is unavoidable. It is viable for other calibrations and measurements using remote-mixing systems and frequency extenders at higher frequencies.
Proceedings Title
2019 Joint International Symposium on Electromagnetic Compatibility, Sapporo and Asia-Pacific International Symposium on Electromagnetic Compatibility (EMC Sapporo/APEMC)
Conference Dates
June 3-7, 2019
Conference Location
Sapporo, JP

Keywords

antenna measurement, calibration, drift, local oscillator, network analyzer

Citation

Novotny, D. (2019), Reducing Effects of LO Cable Movement in Antenna and Long Distance VNA Measurements, 2019 Joint International Symposium on Electromagnetic Compatibility, Sapporo and Asia-Pacific International Symposium on Electromagnetic Compatibility (EMC Sapporo/APEMC), Sapporo, JP, [online], https://doi.org/10.23919/EMCTokyo.2019.8893880, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=927510 (Accessed April 25, 2024)
Created November 7, 2019, Updated February 23, 2022