Planar monopole in wrapped structure for low-profile GSM∕DCS mobile phone antenna

A novel micro-structure internal antenna with sputter-deposited for wireless communication applications

“…However, in order to be applied in real handset situations, internal antennas should have improved the characteristics in terms of gain, efficiency, bandwidth, and radiation pattern. As a result, there has been a surge in planar inverted F antenna (PIFA) for mobile handsets due to their compactness [1], [2], low profile, ease of manufacture, reduction of special absorption rate (SAR) and good electrical performance [3]- [4]. In the early stage, even though only the antenna itself was designed to satisfy the desired operation, its performances were affected by the actual handset case [5]- [6].…”

“…The sputter-deposit condition is 7 KW supply power and 7 x 10. 4 Torr pressure with 5rpm spin speed in plasma circumstances. The distance from the Ni, Ag, and Ni sputtered target to working thin film was 70mm.…”

Printed compact S‐shaped monopole antenna with a perpendicular feed for penta‐band mobile phone application

“…For this application, we present a promising printed compact S-shaped monopole antenna for penta-band operation. This antenna is a low-profile internal monopole antenna [3][4][5][6][7][8][9], and moreover, is uniplanar in structure, allowing it to fabricate at low cost, and also compact in its occupied volume inside the mobile phone. Detailed design considerations of the antenna are described, and results of the fabricated prototype are presented and discussed.…”

Low‐profile ultra‐wideband antenna for mobile phone applications

“…The proposed UWB antenna (see Fig. 1) shows a low profile of 10 mm from the top edge of the system ground plane of a mobile phone, and is promising to be embedded within the mobile phone's casing as an internal antennas [7][8][9]. Further, in this study, the proposed antenna can generate a very wide operating band (2.5:1 VSWR) of about 8 GHz (about 1.89 -10.14 GHz), so that it very easily covers the Universal Mobile Telecommunication System (UMTS, 1920 -2170 MHz) band for mobile communications and the 2.4-GHz (2400 -2484 MHz) and 5.2/5.8-GHz (5150 -5350/5725-5875 MHz) bands for WLAN communications.…”