Abstract
Abstract In this paper, a compact ultra-wideband (UWB) antenna with triple notch bands is proposed. By etching out two ESRR of different dimensions in the radiating patch, two band-notched properties in the Wi-MAX (3–3.7 GHz), WLAN (5.125–5.825 GHz) are obtained. Furthermore, by placing SIR near the feed line–patch junction of the antenna, band notch property for the 7.9–8.4 GHz (X-band) frequencies is achieved. Design guidelines for implementing the notch-bands at the desired frequency regions are provided. The notched frequencies can be adjusted according to specification by altering the parameters of the ESRR and SIR. The effects of the key design parameters on band notch characteristics are also investigated. The realized antenna achieved an operating bandwidth (VSWR < 2) ranges from 2.94 to more than 11.3 GHz with triple notched bands of 3.0–3.7, 5.2–6.1, and 7.9–8.7 GHz. The proposed antenna is well designed and extensively investigated. The experimental results are given to verify that the proposed antenna with a wide bandwidth, three designated band-notched function which is suitable for modern high data rate UWB communication applications. The maximum simulated gain of the antenna is around 10.02 dBi with an average efficiency above 82.2% throughout the bandwidth.
Highlights
Ultra-wideband (UWB) technology has recently received much attention due to the characteristics such as low cost, low complexity, low spectral power density, high precision ranging and become the most potential candidate for short-range high speed wireless communication systems
The UWB antenna design plays a unique role because it behaves like a band pass filter and reshapes the spectra of the pulses and avoid undesired distortions
When the proposed antenna integrates with two elliptical split ring resonator (ESRR) and step impedance resonator (SIR), it is a triple band notched UWB antenna to reject the undesired narrowband signals from Wi-MAX (3–3.7 GHz), WLAN (5.2–6.1 GHz) and ITU technology (7.98–8.7 GHz)
Summary
Wireless connectivity has enabled a new mobile lifestyle filled with conveniences for mobile computing users. Today’s wireless LAN and WPAN technologies cannot meet the needs of tomorrow’s connectivity of such a host of emerging consumer electronic devices that require high bandwidth. Ultra-wideband (UWB) technology offers a solution for the bandwidth, high data rates across multiple devices, cost, power consumption, and physical size requirements of next-generation consumer electronic devices for digital home and the office. In this context, the UWB antenna design plays a unique role because it behaves like a band pass filter and reshapes the spectra of the pulses and avoid undesired distortions.
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