Moreover, SWB offers an increased channel capacity, greater time-accuracy and a superior resolution in comparison to that of the UWB 2. Super wide band technology is far more advantageous than the narrow band, and it contains all the advanced characteristics of UWB. However, there has been a recent trend to utilize the super wideband (SWB) range which can offer a pervasive service by covering both short and long-range data transmission 1.
Wireless personal area network (WPAN) based applications have a great demand for ultra-wideband (UWB) frequency band. Ultra-Wide Band (UWB) radio technology has the ability to provide an exceedingly high data rate wireless communication over a short distance.
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The designed antenna with thinner patch metallization height is practically fabricated and measured up to 67 GHz using Vector Network Analyzer to provide experimental validation. This eventually offers the maximized bandwidth with the most compact size for an SWB antenna. A comparison with the fundamental theories by Chu and Mclean illustrates that the designed SWB antenna electrical size exceeds Mclean and nearly touches the Chu fundamental limit curve. Using this principle, the antenna impedance bandwidth is augmented while a reduction in electrical size is achieved. By enhancing the patch height, the antenna spherical volume is utilized more efficiently. The designed antenna operating band with thinner height starts from 1.65 to 160 GHz while with the added patch metallic height, the antenna operates from a minimum of 1.39 to 160 GHz with an average nominal bandwidth of more than 158 GHz. The proposed antenna achieves a huge frequency range with a ratio bandwidth starting from 96.96:1 to as high as 115.10: 1. The designed antenna is then modified by enhancing the copper patch with an additional layer of 28.5 mm thickness. The antenna is designed on a material with permittivity, ε r = 3 where the patch metallization height is maintained as 0.035 mm.
This paper investigates the design and practical implementation of a Super Wide Band (SWB) antenna along with the application of fundamental bandwidth limitation theory of small antennas in the proposed design.