Comprehensive study of printed antenna with the handset modeling

Abstract

ABSTRACTThis article presents a comprehensive study on the performance of a compact multiband antenna operating in LTE700, GSM850, GSM 900, DCS1800, PCS 1900, UMTS 2100, most of LTE bands (especially the low‐frequency LTE 700 band), and wireless applications. The antenna consists of a monopole in conjunction with meander line antenna. An EBG structure is used to miniaturize the antenna size and to enhance the gain in the direction away from the antenna to lower the SAR within the human body. The EBG structure also contributes in open the operating bands. The proposed antenna is tested using the four recommended test positions of the CTIA association where the proposed antenna reveals good performance in all test cases. Return loss, radiation patterns, SAR, and efficiency of this antenna are computed in free space, in the presence of handset (keypad, battery, speaker camera, RF circuit, and LCD) in talking position, in standby position, in packaging, and as well as in the presence of head and hand in free space and in a car. The SAR values are taken into account not to exceed the standard safety levels. In addition, radiation efficiencies of these handset antennas are computed in the presence of head and hand. All simulation results are performed using the CST software. Simulation results are in good agreement with the measurement results. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:974–980, 2016