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| Research for the Validating of NIMs Precise Ground Reflection Range |
| MENG Dong-lin,HONG Li,LIU Xiao,HUANG Pan,XIE Ming |
| National Institute of Metrology, Beijing 100029, China |
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Abstract The Improvement methods are proposed to calculate and verify the very precise site insertion loss (error less than 0.22 dB) between a pair of dipole antennas at the 24 resonant frequencies from 30 MHz to 1 GHz, to adequately validate NIM′s newly established ground reflection range of high performance. Careful comparison is made between the MoM model of calculable dipole antennas and practical measurement setup, which provides profound insight into the errors of calculable dipole antennas and measurement, and is used to improve the accuracy of the broadband calculable dipole antennas. The accuracy of the calculable dipole antennas is verified, based on the "effect of error mitigating" of near-field method. Finally, the performance of NIM′s newly established precise ground reflection range are validated per CISPR 16-1-5 with the optimized calculable dipole antennas, and the deviation between measurement and simulation is less than 0.26 dB for horizontal polarization, and 0.34 dB for vertical polarization at 10 m range.
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Received: 12 December 2014
Published: 22 March 2016
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2016, Vol. 37 
