The Tablet LTE Antenna Research And Design

Antenna as part of the wireless terminal equipment is critical to the communication ability plays a decisive role. On the one hand, the situation of coexistence of various wireless communication technologies for antenna cover more frequency range. On the other hand, the internal antenna miniaturization, easy integration, low SAR also needs, so the tablet LTE antenna research is necessary.The paper mainly studied the LTE PCB antenna of the tablet,having a study on the return loss,efficiency,SAR,etc of the antenna working frequency band.and designa LTE antenna which has the advantages of wide band, high efficiency,low SAR values and so on.the main work is summarized as the follows: 1, designed a high efficiency and wide bandwidth LTE antenna. The band of the tablet LTE antenna is: 704-960 MHZ, 1710-2700 MHZ, by changing the antenna pattern, using the coupling between lines, combined with the matching circuit to increase the bandwidth and improve the efficiency of the antenna, in order to achieve the return loss under- 5 db, the antenna efficiency is above 30%.2, Use the way of P- sensor and antenna combined to reduce the SAR of tablet. The traditional design P- sensor and antenna are separate,it will need more space. In this paper, the design not only saves space cost, at the same time also effective in reducing the SAR values, to achieve the requirement of the SAR is less than 1.6 mw/g. HFSS simulation software is used to simulate the model, optimization analysis of S parameters of antenna.The actual test results show that the antenna performance meet the spec. This design can be well applied to LTE terminal system, and greatly improve the spectrum utilization.