Abstract
This article describes the CPW-feed ultra wideband tree type monopole fractal antenna and it’s backscattering. The prototype antenna is fabricated with optimized dimension. The experimental result of this antenna exhibits the ultra wideband characteristics from 5.0 GHz to 14.0 GHz. The experimental and simulated results are in good agreement. The effects of various design parameters on impedance bandwidth have also been studied in detail using EM simulator. The nature of H and E - plane radiation patterns are omni-directional and bidirectional respectively. The measured group delay is almost constant throughout band. This indicates the phase linearity. The monostatic RCS of antenna is also simulated iteration-wise for antenna and structural scattering mode. This antenna can be useful for UWB system, Microwave Imaging and vehicular radar and military high data rate wireless communications.
Highlights
The Ultra wideband (UWB) technology opens new door for wireless communication system, since the current wireless system increasing exponentially
The experimental result slightly varies from the simulated result
The simulated results are found in good agreement with experimental results
Summary
The Ultra wideband (UWB) technology opens new door for wireless communication system, since the current wireless system increasing exponentially. The antenna scattering is related with its feed port termination This scattering may be the problem for the design of antenna with low RCS and good radiation characteristic simultaneously [11,12]. The backscattering of antenna has been discussed and calculated in operating band This antenna can be used for frequency band from 5.825 GHz – 10.6 GHz along with wireless local area network (WLAN), secure transmission and military high data rate wireless communications. The zeroth iteration structure has been scale down twice with the scale factor of 0.58 and united with step This tree-type fractal antenna structure is fed with CPW-feed. Keeping in view the current distribution, the gap between patch and ground, gap between feed width and ground, ground width and circumference of patch are critical to achieve the desire impedance matching in the operating band
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