TY - JOUR
T1 - High Optical Visibility and Shielding Effectiveness Metal Mesh Film for Microwave Oven Application
AU - Tung, Phan Duy
AU - Jung, Chang Won
N1 - Publisher Copyright:
© 1964-2012 IEEE.
PY - 2020/8
Y1 - 2020/8
N2 - A typical microwave oven generates an electromagnetic wave in an ISM band of 2.45 GHz. To prevent this unwanted microwave leakage through its front door, a circular perforated metal sheet is typically used with low shielding effectiveness (< 27 dB) and with poor visibility (< 50%) which is usually difficult to check the progress of cooking. In this paper, we investigate sheet resistance (RS) and optical transparency (OT) for electrical and optical performance of two transparent electrodes (TEs) including metal mesh film (MMF) and indium tin oxide (ITO) and compare those to the currently used perforated copper sheet (PCS) in commercial microwave oven. The measured RS and average OT in visible spectrum of MMF is 0.11 Ω/sq and 68.4%, and its figure of merit (FoM) is 203.8 which is the highest among them. The measured shielding effectiveness of MMF, ITO, and PCS at 2.45 GHz are 31.4, 21.0, and 25.5 dB, respectively. The results indicate that MMF has highest FoM and the best EMC performance among the TEs and PCS, which makes it the most suitable candidate for microwave ovens.
AB - A typical microwave oven generates an electromagnetic wave in an ISM band of 2.45 GHz. To prevent this unwanted microwave leakage through its front door, a circular perforated metal sheet is typically used with low shielding effectiveness (< 27 dB) and with poor visibility (< 50%) which is usually difficult to check the progress of cooking. In this paper, we investigate sheet resistance (RS) and optical transparency (OT) for electrical and optical performance of two transparent electrodes (TEs) including metal mesh film (MMF) and indium tin oxide (ITO) and compare those to the currently used perforated copper sheet (PCS) in commercial microwave oven. The measured RS and average OT in visible spectrum of MMF is 0.11 Ω/sq and 68.4%, and its figure of merit (FoM) is 203.8 which is the highest among them. The measured shielding effectiveness of MMF, ITO, and PCS at 2.45 GHz are 31.4, 21.0, and 25.5 dB, respectively. The results indicate that MMF has highest FoM and the best EMC performance among the TEs and PCS, which makes it the most suitable candidate for microwave ovens.
KW - Electromagnetic compatibility (EMC)
KW - metal mesh film (MMF)
KW - microwave oven
KW - shielding effectiveness (SE)
KW - transparent electrodes (TEs)
UR - http://www.scopus.com/inward/record.url?scp=85089941417&partnerID=8YFLogxK
U2 - 10.1109/TEMC.2019.2927923
DO - 10.1109/TEMC.2019.2927923
M3 - Article
AN - SCOPUS:85089941417
SN - 0018-9375
VL - 62
SP - 1076
EP - 1081
JO - IEEE Transactions on Electromagnetic Compatibility
JF - IEEE Transactions on Electromagnetic Compatibility
IS - 4
M1 - 8770284
ER -