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ABSTRACT The combination of matching circuit and strip provides a new approach to realize wide bandwidth of the antenna. We presented a coupled-fed antenna with matching circuit for the LTE/WWAN operation in the tablet computer. The total size of the antenna is of 40 × 10 mm2. Furthermore, the matching circuit of a chip capacitor and chip inductor does not increase the antenna's occupied volume. Details of the proposed antenna and its operating principle are presented and discussed. The excited resonant modes of the proposed antenna cover the desired lower LTE/WWAN band operation (698-960 MHz) and the higher band operation (1710-2690 MHz). Good radiation characteristics of the proposed antenna are also obtained. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:1002-1006, 2016 [ABSTRACT FROM AUTHOR]

ABSTRACT A novel multiband loaded trapezoidal ring fractal antenna (TRFA) is proposed for wireless local area network (WLAN) and worldwide interoperability for microwave access (WiMAX) applications. The self-similarity property is applied to the trapezoidal structure and the fractal geometry is achieved by consecutive iterations. The proposed antenna has a compact size of 30 × 30 × 1.6 mm3. The antenna is fabricated and tested. The fourth iteration of the proposed TRFA covers the 2.4/5.2/5.8 GHz WLAN bands and 2.5/3.5/5.5 GHz WiMAX bands with uniform radiation characteristics and an average gain of 2.20 dBi. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2545-2548, 2014 [ABSTRACT FROM AUTHOR]