Wen-Hsiu Hsu

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A well placement design to improve GSM/DCS and GPS antenna isolation is proposed. The GSM/DCS antenna comprises two branches that the longer one is for GSM900 and the shorter one is for DCS1800. The proposed main antenna has an impedance bandwidth of 104 MHz and 187 MHz respectively in GSM900 and DCS1800 bands, with VSWR of 3∶1. The GPS subsidiary(More)
This study proposed a high gain dipole antenna system with reflective metal sheet. The structure of this system was simple. An antenna unit was composed of a symmetric trapezoid-shaped dipole antenna, and an antenna system was constructed by placing metal reflective metal sheet, which were formed on single-sided base plate (FR4), of the same structure with(More)
The paper presents an antenna design of smart watch with WLAN MIMO antennas and a GPS antenna. The overall dimensions size of the design is 40 mm × 40 mm × 5.4 mm. There are four WLAN antennas and a GPS antenna in the design. The size of ground plane is 40 mm × 40 mm. The antennas are fed by 50-ohm mini coaxial cable line. The PIFA type(More)
A coupled-fed monopole antenna with a multi-arm structure for GSM900/GSM1800 / DCS / PCS / UMTS / LTE2300 for USB dongle is presented. The monopole is fed by 50-ohm mini coaxial cable line. The two arms are on the front side and a meandered arm extended from the front side by via is on the back side. The multi-arms are coupled by an inverted L strip(More)
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