| Summary: | 碩士 === 南臺科技大學 === 電子工程系 === 105 === This thesis presents three designs of the integrated multi-antenna of multi-band for smart watch. All the designs uses simple antenna structures.
In the first case, a design with four antennas on smart watch for GPS/UMTS/WLAN MIMO application is proposed. The overall dimensions of the design are 40 mm × 40 mm × 5.4 mm. The size of the main ground plane is 40 mm × 40 mm × 0.4 mm. These antennas fed by 50-ohm mini-coaxial cable lines use the coupled-fed architecture. These antennas are vertically placed to the edges of the main ground plane. The design covering UMTS (1.92 - 1.98 GHz, 2.11 - 2.17 GHz), GPS (1.575 GHz), MIMO WLAN (2.4 - 2.484 GHz) is presented.
In the second case, the design of the multiple antenna of miniaturized MIMO is presented. The overall dimensions size is 40 mm × 40 mm × 5.4 mm. All antenna portions size is 8 mm × 4.4 mm × 0.4 mm. The ground plane size is 40 mm × 40 mm × 0.4 mm. The antenna is fed by 50-ohm mini-coaxial cable line to design simple structure. It used IFA structure to design GPS (1.575 GHz) and WLAN (2.4 - 2.484 GHz) band by corner of four border way.
In the third case, a design with four antennas on smart watch for GSM/GPS/LTE/WLAN application is proposed. The overall dimensions of the design are 40.8 mm × 40.8 mm × 5.4 mm. These antennas use the IFA architecture. These antennas are fed by 50-ohm mini-coaxial cable lines. First, the IFA structure is used to design GPS band in front of the frame. And then the IFA structure is also adopted to design LTE, WLAN band on left side of the frame. Finally, the strip bent along the sides is used to design GSM band.
Keyword: Smart Watch, Open Slot, PIFA antenna, Coupled-fed, GSM
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