| Summary: | 碩士 === 大同大學 === 電機工程學系(所) === 100 === In twenty-first century, the technique of wireless charging is the trend for the charging power of future mobile devices. On the other hand, NFC technology is considered to be applied in mobile phones and other mobile communication device due to the small size, convenience and high security as for characteristics as a short-range wireless communication technology by Near Field Communication. Based on today's technology, wireless charging or NFC makes use of electromagnetic coupling effect to transfer energy from one coil to another. This thesis presents to design an integrated antenna for RFID and wireless charging to apply for mobile devices such as mobile phone.
In this thesis, two different functions of this integrated antenna use different operating frequencies to avoid interference of odd harmonics. The frequency band of RFID is 13.56MHz by ISO 15693 standard and the frequency band of wireless charging system is 6.78MHz by CEA-2042.1 standard. Because the wavelength of RFID and wireless charging are 22 meter and 44 meter, we must design this integrated antenna to use the concept of loop antenna.
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