Compact wideband balanced antenna for mobile handsets

Miniaturized Balanced Antenna with Integrated Balun for Practical LTE Applications

“…In comparison to [16], [27], this version of the proposed balanced antenna has come up with such advantage of covering the dual-band of LTE namely 700/2600MHz as well as achieving a size reduction compared to previous work in [16][17][18], [24,25]. Moreover, this present antenna has achieved a better efficiency in contrast to [16], [23]. Furthermore, it accomplishes an improved gain compared with works in [18,22,23,25,26].…”

“…To exploit this beneficial property, a number of mobile phone balanced antenna structures operating in dualband, multiband and wide band have been recently studied [16][17][18][19][20][21][22][23][24][25][26][27]. Tab.…”

“…1, one can observe these available balanced antennas can only cover either the major ex-isting mobile bands or/and UWB spectrum, for example: antenna design in [17] can only cover GSM900, the antenna geometry in [18] is capable to work for GSM1800, an antenna operating over the GSM900/1800 was proposed in [19]; whereas [16], [20] proposed antennas to operate in WLAN, authors in [22] proposed balanced antenna structure covering GSM and UMTS, while [23] designed a balanced antenna to operate in GSM and WLAN, and authors in [24] offered balanced antennas that work in the full operation of three mobile radio bands of GSM900/1800, PCS/1900 and UMTS/2200.…”

“…By compromising the bandwidth, antenna size and frequency bands, some approaches were proposed by previous author's works [18], [20][21][22][23][24] and dual-band functional operation, as shown in Tab. 1.…”

Multiband Inverted-F Antenna With Independent Bands for Small and Slim Cellular Mobile Handsets

“…8 (b), where the mobile phone housing model is in direct contact with the antenna. The relative permittivity and conductivity of 3.5 and 0.02 S/m, respectively, for the mobile phone housing model [33] and of 54 and 1.45 S/m, respectively, for human hand model [34] have been used in simulations. The results in Fig.…”