A compact GPS and WLAN PIFA for full metal-rimmed mobile handset using the ground bridges

Hepta-band coupled-fed antenna for metal-ring-frame WWAN/LTE smartphone applications

“…A number of multiband antennas for MRF smartphone applications have been reported in recent years. Amid these designs, an effective method is proposed to mitigate the adverse effects of metal‐ring on the antennas' performances .…”

Dual‐band antenna using a C‐shaped dual‐feed for GPS/WLAN applications

“…Ferroelectricity in mono crystals has been observed in a large number of inorganic oxides of different structure families, including Perovskite. Among those studies, Na 2 Nb 4 O 11 (NN) ceramic seems to have similar properties to barium titanate oxide BaTiO 3 along with its numerous applications [1]. An increasing demand for high quality electronic devices, high frequency circuits and low cost, has propelled researches for better ceramic materials properties through their characterization, providing a certain priority for new materials that can offer good performance, specially application for microwave systems.…”

“…In order to meet the specifications of the current and future systems, improved or new microwave components based on dedicated dielectric materials and new designs are required such as the quality factor (Q), the temperature coefficient of resonant frequency (s f ) and dielectric constant (e) [2][3][4][5][6][7]. In the last few years, the addition of low melting point Bi 2 O 3 compound was carried out for the development of new compositions to enhance electrical and dielectric properties in the case of NN (Na 2 Nb 4 O 11 ) [1,8], ceramics and also to reduce the sintering temperature. In this paper, experimental measurements, numerical simulations and analysis of the characteristic of microwave NN ceramic matrix was conducted with additions of 0%, 2%, 5% and 10% Bi 2 O 3 .…”

“…Dual‐band antennas for GPS (1.575 GHz) and WLAN (2.4–2.485 GHz) applications are used in various modern wireless communications. In General, most GPS/WLAN dual‐band antennas are designed with a single feed . These antennas have the advantages of a simple structure and easy construction.…”

A Compact GPS/Wlan Antenna Design for Mobile Terminal With Full Metal Housing

“…Therefore, a number of mobile antenna designs with metal cover have been studied [20][21][22][23], However, this metal housing is not a complete piece of metal with 4 side walls, and they are either a simple metal frame or metal ring structure, or the metal housing bottom plane is cut into 3 pieces which are not favorable for mechanical strength. As far as we observed, there are very few papers to address compact tri-band antenna design at this full metal housing environment.…”