Abstract
In this paper, a compact triband printed antenna with hexagonal complementary split-ring resonators (CSRRs) for 4G applications is proposed. The proposed multiband antenna is comprised of a rectangular patch antenna on the top plane, while on the ground plane, hexagonal CSRRs are etched for size miniaturization (at the lower bands) and multiband generation. Another effect of the CSRR is the shifting of the initial resonance of the patch antenna from 5.17 GHz to the higher band of 6.18 GHz. The triband of 180 MHz 2.4~2.59, 150 MHz 2.79~2.94 and 420 MHz 6.04~6.46 GHz bands acquired can cover WLAN/Wi-Fi and WiMAX operating bands adequately. This can be achieved by choosing the optimal size and position of the CSRR on the ground plane carefully. The design occupies a total size of 45 x 45 mm2 using the low-cost FR-4 substrate. Good agreements are obtained between the measured results and the simulated, which are discussed and presented.
Highlights
In recent years, the demand for multiband antennas has attracted great attention due to their advantages of supporting several communication standards, which can be incorporated in mobile wireless devices
In [10], a hexagonal complementary split-ring resonators (CSRRs) was etched on the ground plane of a patch antenna attached with extra radiating elements, which results in realizing a multiband antenna
The numerical analysis and appropriate geometrical parameters needed in the proposed design were carried out using computer simulation technology (CST) software
Summary
The demand for multiband antennas has attracted great attention due to their advantages of supporting several communication standards, which can be incorporated in mobile wireless devices. In another method [7], a number of U shapes were etched for multiband use and antenna miniaturization with metalized vias As part of their contribution, stable directional radiation patterns were realized, which have a compact size. In [10], a hexagonal CSRRs was etched on the ground plane of a patch antenna attached with extra radiating elements, which results in realizing a multiband antenna. Hexagonal CSRR on the ground plane is used to achieve size miniaturization and multiband function for WLAN and WiMAX applications. At the lower frequencies of 2.45 and 2.86 GHz, the CSRR acts as the radiating element This has given a size reduction of 79% for the WLAN frequency band
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