Investigation on the effect of impedance changes in broadband antennas with varying antenna height on radiated emission measurement below 1 GHz

According to the standard method for calibration of receive antennas to be used in radiated emission measurement below 1 GHz, the sensitivity of receive antenna is defined as a free-space antenna factor obtained by applying a given correction factor to a near free-space factor that is determined by...

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Main Authors: Okuyama, Shinichi, Shimanoe, Hiroyuki, Makino, Ikuo, Muramatsu, Hidenori
Format: Conference Proceeding
Language:English
Subjects:
antenna calibration
antenna factor
Antenna measurements
Antennas
Broadband
Broadband antennas
Calibration
Dipole antennas
Electromagnetic compatibility
Emission
Emission analysis
Estimates
free-space antenna factor
Impedance
radiated emission
receive antenna height
Receiving antennas
Sensitivity
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creator Okuyama, Shinichi
Shimanoe, Hiroyuki
Makino, Ikuo
Muramatsu, Hidenori
description According to the standard method for calibration of receive antennas to be used in radiated emission measurement below 1 GHz, the sensitivity of receive antenna is defined as a free-space antenna factor obtained by applying a given correction factor to a near free-space factor that is determined by horizontally polarized antenna calibration at a 2 m antenna height. In actual radiated emission measurement performed while varying the receive antenna height, however, the sensitivity of receive antenna varies with antenna impedance changes at different antenna heights. In this situation, the authors measured how the antenna impedance changes with the antenna height and examined how such impedance changes affect radiated emission measurement results, using biconical, log-periodic dipole, and hybrid antennas under test that are typical below 1 GHz. The authors also studied on a method to estimate an antenna height free from antenna impedance changes and suitable for obtaining free-space factors.
doi_str_mv 10.1109/ISEMC.2015.7256337
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2158-1118
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recordid cdi_ieee_primary_7256337
source IEEE Xplore All Conference Series
subjects antenna calibration
antenna factor
Antenna measurements
Antennas
Broadband
Broadband antennas
Calibration
Dipole antennas
Electromagnetic compatibility
Emission
Emission analysis
Estimates
free-space antenna factor
Impedance
radiated emission
receive antenna height
Receiving antennas
Sensitivity
title Investigation on the effect of impedance changes in broadband antennas with varying antenna height on radiated emission measurement below 1 GHz
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