EMI antenna calibration on an absorber-lined ground plane for measuring free-space antenna factor
2002 IEEE International Symposium on Electromagnetic Compatibility - Tập 1 - Trang 43-48 vol.1
Tóm tắt
The CISPR has been discussing the calibration methods suitable for determining the free-space value of antenna factor of an EMI measuring antenna. One of the promising methods is the standard antenna method employed on an open-area test site covered with radio wave absorbers. To evaluate the effects of absorbers, theoretical and experimental investigations are performed rigorously on the antenna impedance and antenna factor of an antenna that is placed at various heights above ferrite tiles put on a metal ground plane. These studies show that the use of ferrite tiles is very effective to produce quasi free-space environment at an open area test site for EMI antenna calibration.
Từ khóa
#Electromagnetic interference #Calibration #Antenna measurements #Antenna theory #Ferrites #Tiles #Testing #Performance evaluation #Impedance #Open area test sitesTài liệu tham khảo
camell, 1987, NBS Calibration Procedures for Horizontal Dipole Antennas (25 to 1000 MHz), NBS Technical Note 1309
2001, CISPR/A/WG1 (Ad-hoc ANTCAL/Johnk-Alexander-Sugiura) 00–01
suzuki, 2000, Calibration of a Biconical Antenna and its Usage in EMI Measurements, Trans of the IEICE (in Japanese), j83 b, 1739
0, American National Standard for Electromagnetic Compatibility — Radiated Emission Measurements in Electromagnetic Interference (EMI) Control — Calibration of Antennas (9 kHz to 40 GHz)
stratton, 1941, Electromagnetic Theory, 576
nagai, 1998, EMI Measurement Using a Log-periodic Dipole Array Antenna, Trans of the IEICE (in Japanese), j81 b ii, 624
1999, Specifications for Radio Disturbance and Immunity Measuring Apparatus and Methods- Part 1 Radio Disturbance and Immunity Measuring Apparatus
sugiura, 1995, EMI Dipole Antenna Factors, IEICE Trans Commun, e78 b, 134