Analysis of Characteristics Measurement and Coupling Efficiency for Wireless Charging of Shielding Material

• Main Authors: HSIEH, CHENG-CHUN, 謝承均
• Other Authors: LIN, HAN-NIEN
• Format: Others
• Language: zh-TW
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/x2ynw9

碩士 === 逢甲大學 === 通訊工程學系 === 105 === In the past, traditional EMI (Electromagnetic Interference) noise mainly dominated by conduction. With the rapid development of electronic technology, the electronic products and mobile communication equipment gradually develop into miniaturization and high speed processing. The circuit layout has also becoming more and more crowded and complex, resulting in narrowing of distances between elements and lines. These in turn causes interferences between sensitive circuits affecting the circuit performance or even malfunction. Nowadays, there are more and more wireless communication equipment. In the future, “Internet of Things, IoT” and “Internet of Vehicles, IoV” will surround our life. Therefore, radiation interference between equipment will worsen progressively. Nowadays, we will also use shielding materials to reduce radiation interference on elements. This article referred to the International Electrotechnical Commission (IEC 61967-6 Magnetic Probe) and American Society for Testing and Materials (ASTM D 4935-99 Coaxial cell) the standards to measure the effectiveness of electromagnetic shielding materials. This article also mentioned that using electromagnetic simulation software to design Magnetic Probe and Coaxial Cell model, and investigated the efficiency relation of shielding materials in near field and far field. Finally, using the WPC 1.1 standard to design a wireless charging coupling coil to compare the coupling efficiency when the shielding material put on the coil.