TY - GEN
T1 - A study on measurement method of near electric field noise from LED bulbs
AU - Kasuga, Takashi
AU - Ohashi, Takumi
AU - Yamada, Syohei
AU - Inoue, Hiroshi
PY - 2012/1/1
Y1 - 2012/1/1
N2 - Although the inverter circuit is used to make high efficiency of LED bulbs, the large electromagnetic noise radiated from the inverter circuit may influence to the radio communication system. Though near magnetic field noise from LED bulbs was not detected, near electric field was detected. The purpose of this study is to propose the measurement method of near electric field noise from LED bulbs by using monopole antenna. The calibration factor is obtained by a near field three antenna method. Alternatively, using two different length antennas, 1 to 400 MHz wideband measurement can be possible to use. Actually, characteristic near electric field is observed from 100 to 200 MHz. This result conformed to far electric field from LED bulbs, and it has correlate with near electric field. The cause of the large electric field radiation is the resonance power line.
AB - Although the inverter circuit is used to make high efficiency of LED bulbs, the large electromagnetic noise radiated from the inverter circuit may influence to the radio communication system. Though near magnetic field noise from LED bulbs was not detected, near electric field was detected. The purpose of this study is to propose the measurement method of near electric field noise from LED bulbs by using monopole antenna. The calibration factor is obtained by a near field three antenna method. Alternatively, using two different length antennas, 1 to 400 MHz wideband measurement can be possible to use. Actually, characteristic near electric field is observed from 100 to 200 MHz. This result conformed to far electric field from LED bulbs, and it has correlate with near electric field. The cause of the large electric field radiation is the resonance power line.
KW - LED bulbs
KW - a near field three antenna method
KW - monopole antenna
KW - near electric field noise
UR - http://www.scopus.com/inward/record.url?scp=84869464146&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84869464146&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84869464146
SN - 9781467322591
T3 - Proceedings of the SICE Annual Conference
SP - 428
EP - 432
BT - 2012 Proceedings of SICE Annual Conference, SICE 2012
PB - Society of Instrument and Control Engineers (SICE)
T2 - 2012 51st Annual Conference on of the Society of Instrument and Control Engineers of Japan, SICE 2012
Y2 - 20 August 2012 through 23 August 2012
ER -