Design of printed antennas for Wireless local area network

• Main Authors: TSAI,GUANG-YUAN, 蔡光原
• Other Authors: CHEN,WEN-SHAN
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/69813423680530834481

碩士 === 南臺科技大學 === 電子工程系 === 104 === This research paper proposes two designs of dongle antennas. For the first design, the design of MIMO loop antennas with a neutralization line is proposed for wireless communications application; the second design, a miniaturization Slot Antenna; the third design, a applied to an external antenna LoRa frequency band is proposed and investigated. The first case of MIMO antennas is designed to be applied to the WLAN 2.4GHz frequency band among nature line Loop MIMO antennas; the overall dimensions of 27.5 mm × 45 mm × 1.6 mm and the antenna size is 27.50 mm × 15 mm × 1.6 mm, this study symmetric antennas structure, the main structure is designed to Loop mainly mode resonance in the 2.4GHz and monopole antenna adjusts its bandwidth, isolation mechanism to make use of Neutralization line 2.4GHz -15dB or less in isolation. The second one of the antenna is designed to be miniaturization slot antennas applied to WLAN a / b / g / n frequency band; The overall dimensions of 5 mm × 40 mm × 1.6 mm and antennas size is 5 mm × 14 mm × 1.6 mm, this study antenna used two slots to resonance Its path is longer Slots responsible for resonance low frequency, inverted the n-type slot resonance of high frequency modes, together with the front of the monopole antenna adjustment to match the bandwidth to achieve the range of applications. The third antennas designed to be applied to an external antenna LoRa SX1273 frequency band; antenna overall size of 18mm × 121mm × 0.4mm, this study is a single side of the antenna structure, asymmetric antenna structure, the meandering path of the resonance the first mode and the second mode by the path of extension of the ground resonance, while the main function of the parasitic element is adjusted to match the antenna.