Antenna designs for wireless communication and wearable device

• Main Authors: Yang Chih Kai, 楊智凱
• Other Authors: Chen Wen Shan
• Format: Others
• Language: zh-TW
• Published: 104
• Online Access: http://ndltd.ncl.edu.tw/handle/23624427119629529899

碩士 === 南臺科技大學 === 電子工程系 === 103 === In the thesis, we proposed two compact printed Dongle antennas and a printed antenna on smart connected device for wireless communication and wearable device. The first paragraph, a printed multi-arm antenna for WLAN dongle application is proposed. The overall size of antenna is 40 mm × 10 mm × 1.6 mm and area of the antenna is 10 mm × 10 mm. The impedance matching can be achieved by using a extended monopole and the path of branch on the antenna design. In second paragraph, the multi-frequency dongle antenna applies for the wireless transceiver is presented; the overall size of antenna is 55 mm × 13 mm × 1.6 mm applied frequency band to include WLAN (2.45GHz, 5.2 GHz, 5.8 GHz), WiMAX (2.5 GHz, 5.25 GHz) and LTE (2300 MHz, 2500 MHz). The antenna has two modes in low-frequency at 2 to 3 GHz: Two resonances impedance matching are produced from the ground and the slot. One resonance mode is made from the ground open slot at 3 GHz. Finally, we added the metal patch at right side to adjust the mode of 3 GHz to generate high frequency band. In third paragraph, a MIMO antenna design on smart watch for Wi-Fi band is proposed. The overall size of the design is 40 mm × 40.2 mm × 5mm. The antenna design uses three-dimensional vertical cooper IFA antenna architecture design. Front and Back grounds in the design use a common ground and simulates smart watch’s shell and screen of the characteristic. From the results, we can adjust important parameters of proposed antenna to achieve the desired bands. This design can be applied in wireless communication and wearable devices.