A Novel Dual-Band Dipole Antenna for WLAN and LTE Applications

Abstract

In this letter, a dual-band dipole antenna, both in the strip and the wired structures, for possible 4G long-term evolution (LTE) and wireless local area network (WLAN) applications is presented. The proposed antenna bandwidth covers the low and the high bands of WLAN (2.4 GHz, 5 GHz) and TD-LTE (1880–2655 MHz) in dual-band frequency, the impedance bandwidth in the low and the high bands are 63% (1.6–3.1 GHz) and 15% (4.75–5.55 GHz) respectively. The omnidirectional radiation patterns are desirable for WLAN and LTE communications. The maximum gains of 6.23 dBi and 5.13 dBi in both WLAN bands are adequate for stable gain applications. To avoiding the dissemination of the outer surface of the coaxial cable a copper cylinder is employed as a balun. Simple structure, use of printed circuit technology and FR4 material in the construction of the proposed antenna make it economical and easily-fabricated. The proposed antenna is also designed with the wired structure for similar purposes. Finally, the strip prototype of the antenna is implemented. Experimental results along with the simulation results have validated the merits of the proposed antenna involving simple and inexpensive structure, simultaneously covering WLAN and LTE frequency bands and almost high and stable gain in both bands.