| Summary: | 碩士 === 逢甲大學 === 通訊工程學系 === 106 === This thesis focuses on multi-band antennas for handheld devices
including smart phones and tablet computer. There are three
antennas proposed in this research. The main structures of the
antennas are monopole antenna and slot antenna.
The first antenna is a multi-band antenna for smart phone. It
can provide LTE 700/2300/2500 (698~787, 2300~2400, 2500~2690
MHz), GSM 850/900/1800/1900 (824~894, 890~960, 1710~1880,
1850~1990 MHz), UMTS 2100 (1920~2170 MHz) and WLAN 2400
(2400~2488 MHz). The antenna consists of three branches monopole
antenna and a shorting strip with a matching capacitor. In order to
reduce the overall antenna size, a 3-dimensional structure is designed.
The volume of the proposed antenna is 70×8×3
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