Novel Cross-Type Network for Wide-Tuning-Range Reconfigurable Multiband Antennas

Novel Cross-Type Network for Wide-Tuning-Range Reconfigurable Multiband Antennas

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This paper presents a cross-type network design with a novel reconfigurable functionality to realize a tunable multiband antenna.By attaching a reconfigurable network at the feeding port of a broadband antenna, multi-input impedance adjustment enables the production of Magnetic Brake Assembly multimatching operating bands.Each band can be independently controlled by a single component with a considerably wide tuning range and high selectivity.The experiments in this study involved using an ultra-wideband (UWB) antenna connected to the proposed cross-type network.

The tunable antenna operates in a dual band of HAIR ACCESSORIES fL (1.39 to 2.34 GHz) and fH (2.1 to 3.

6 GHz) with tunable frequency ratios of 168% and 132%, respectively.The average bandwidths at fL and fH are approximately 50 MHz and 148 MHz, respectively, implying narrowband operation.The measured radiation pattern revealed that the tunable antenna exhibits a nearly omnidirectional radiation pattern at both 1.8 and 3.

5 GHz.The network circuit architecture can be extended to the multiband function type by adopting this matching approach.The amount of shunt matches determines the number of operation bands.