Compact internal multiband antenna for mobile phone and WLAN standards

Compact CPW-fed uniplanar antenna for multiband wireless applications

“…3. The GSM900 band (840-970 MHz) Exhibits 2.5:1 VSWR and is better than that presented in [5,6] which is wide enough to cover the GSM application band. The antenna Exhibits 2:1 VSWR band width on DCS-1800 (1.56-1.92 GHz), and ISM-2.4/5.2/5.8 GHz WLAN (2.39-2.49 GHz and 5.07-6.23 GHz) bands.…”

“…However, the antenna is bulky and not compact. The planar inverted F antenna working in GSM900 band presented in [5] exhibits-6 dB return loss while that in [6] Exhibits 2.5:1 VSWR bandwidth that is wide enough to cover the application band. Researchers have explored lot of antennas based on T-shaped structures for multiband and broadband applications.…”

A Practical Guide to 3D Electromagnetic Software Tools

“…IE3D has been successfully used in the design of small antennas for mobile phones. Specific topologies can be found in [28], [29], [30], [31], [32]. In [30] for example, an internal dualband patch antenna is described.…”

A Wideband Printed Antenna for Covering Major Cellular Bands with a C- Shaped Patch

“…Recently many antennas with multiband and wideband characteristics have been successfully designed for wireless applications [1][2][3][4][5]. In the design of a printed antenna, the radiator and ground plane shapes as well as the feeding structure can be optimized to achieve a broad impedance bandwidth [6][7][8][9][10].…”