Antenna Design For Handset Wireless Communication Devices

• Main Authors: LU,TZU-CHI, 呂子齊
• Other Authors: CHEN,WEN-SHAN
• Format: Others
• Language: zh-TW
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/458e4z

碩士 === 南臺科技大學 === 電子工程系 === 105 === This thesis proposes two antenna designs applied for handset wireless communication devices. The first one is a MIMO antenna for LTE/GSM handset devices ; the second one is a circularly polarized antenna for handset devices. The overall dimension of the first antenna is 150 × 70 × 0.8 mm3, the antenna portion is 60 × 10 × 0.8 mm3. This design proposes an antenna which can obtain the application bands of LTE, GSM, UMTS……and so on that is quite popular application band of antenna design. Put the antennas on the upper and lower sides, using the length of ground to achieve the isolation between two antennas. The second antenna design of the ground size of 120 × 60 × 0.8 mm3, the antenna portion size is 20 × 5 × 1.6 mm3. The antenna proposes an antenna that can contain the bands of GPS, GLONASS, GALILEO, BDS and INMARSAT. The design using a small size to design the antenna’s portion. And in response to the S parameters do not have enough bandwidth, this design uses the chip capacitor and chip inductance to shift the mode of S parameter. By using these components that would similar to the switch to achieve the most of bandwidth.