Abstract
In this work, a new ultra-wideband (UWB) antenna design with 2.08GHz to 12GHz impedance bandwidth and triple-band specifications is presented. The proposed antenna is formed by a truncated square patch, a partial ground plane, and a 50Ω microstrip line. Three different types of slots were used in order to induce notched bands. A C-shaped slot is etched on the radiating patch to obtain a notched band in 3.31-4.21GHz for WiMAX. An inverted U-shaped slot in the micro-strip line induces a second notched band in order to reduce the interference with the WLAN [5.04-6.81GHz]. Finally, two inverted L-shaped slots around the micro-ribbon line on the ground plane allow the X-band [9.13 to 10.75GHz]. The antenna has dimensions of 32×28×1.6mm3. The Ansoft software (HFSS) was used to simulate the proposed structure. The simulation results are in good agreement with the measurement results. The antenna shows an omnidirectional radiation pattern.
Highlights
The demand for higher data rates is increasing, and the available frequency bands are becoming scarce [1]
It should be borne in mind that the use of the UWB band frequency can be the cause of interference in applications using neighboring frequencies such as WLAN or WIMAX applications [6,7]
A new ultra-wideband planar antenna with triple band notch characteristics is proposed in this work
Summary
The demand for higher data rates is increasing, and the available frequency bands are becoming scarce [1]. UWB technology has advantages such as the ease of manufacture, the small size, and the large bandwidth [2,3]. This bandwidth is mainly due to the fact that UWB communications use extremely narrow pulses for transmitter and receiver communication. The slot insertion method is the best known method for obtaining a frequency band rejected in the UWB antenna. The shape and the dimensions of the slot allow fixing the frequency of the notch band. The slot dimensions depend on the wavelength λ on which the rejected band is centered, and is chosen to be equal to about λ/2 or λ/4 depending on the position and shape of the slot
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