Abstract
A novel compact size ultrawide band planar antenna with band notched characteristics is present. The band rejection characteristic is achieved by loading a pair of metamaterial inspired rectangular split ring resonator (SRR) near the feed line and by etching the SRR slots on a radiating patch. The simulated and measured results reveal that the proposed antenna exhibits the impedance bandwidth over the ultrawide band (UWB) frequency range from 3.1 to 14 GHz with the voltage standing wave ratio less than 2 except for band stop bands at 3.29 to 3.7 GHz (WiMAX band), 3.7 to 4.10 GHz (C-band), 5.1 to 5.9 GHz (WLAN band), and 7.06 to 7.76 GHz (downlink X-band satellite communication), respectively. The proposed antenna fabricated on low-cost FR-4 substrate has compact size of 24 × 20 × 1.6 mm3. The simulation results are compared with measured results and demonstrate good agreement with stable gain over pass bands. The proposed antenna also exhibits dipole-like radiation pattern in E-plane and omni-directional pattern in H-plane. These results led to conclusion that the presented antenna is a suitable candidate for ultrawide band UWB applications with desired band notch characteristics.
Highlights
Since the allocation of the frequency range for unlicensed radio application by FCC (Federal Communications Commission) having the bandwidth of 7.5 GHz (3.1–10.6 GHz), ultrawide band UWB technology has attracted much attention in communication system. is technology is growing rapidly day by day with advancement in the variety of applications such as radio sensing, body area networking, and short-range broadband communication [1]. e patch containing radiator antennas is widely used in order to implement ultrawide band communications which have been analyzed by using various feeding techniques viz. microstrip line feed, coplanar waveguide feed, coaxial feed, etc. [2,3,4,5]
Two circular shape stub and rectangular stub is introduced on the ground plane to achieve the large impedance bandwidth from 3 GHz to 14 GHz. e rejection of worldwide interoperability for microwave access WiMAX band (3.3 to 3.7 GHz) and C-band (3.7 to 4.2 GHz) is acquired by etching the metamaterial-inspired split ring resonator (SRR) slot on the radiator. e wireless local area network WLAN band (5.1 to 5.8 GHz) is achieved by embedding the metamaterial resonator (RSRR) near the microstrip feed line, and the downlink of X-band satellite communication frequency is rejected by employing single complementary split ring resonators (CSRR) slot on the radiator patch
The simulated result of the proposed antenna is discussed and the proposed antenna is optimized by analysing the simulated results of voltage standing wave ratio, gain of antenna, radiation pattern, and radiation efficiency, respectively. e parametric study is carried out for optimization of performances of the proposed band notched antenna. e proposed band notched antenna is analyzed by using high-frequency simulation software (HFSS)
Summary
Received 28 April 2021; Revised 10 May 2021; Accepted 21 May 2021; Published 30 May 2021. A novel compact size ultrawide band planar antenna with band notched characteristics is present. E simulated and measured results reveal that the proposed antenna exhibits the impedance bandwidth over the ultrawide band (UWB) frequency range from 3.1 to 14 GHz with the voltage standing wave ratio less than 2 except for band stop bands at 3.29 to 3.7 GHz (WiMAX band), 3.7 to 4.10 GHz (C-band), 5.1 to 5.9 GHz (WLAN band), and 7.06 to 7.76 GHz (downlink X-band satellite communication), respectively. E proposed antenna fabricated on low-cost FR4 substrate has compact size of 24 × 20 × 1.6 mm. E proposed antenna exhibits dipole-like radiation pattern in E-plane and omni-directional pattern in H-plane. Ese results led to conclusion that the presented antenna is a suitable candidate for ultrawide band UWB applications with desired band notch characteristics A novel compact size ultrawide band planar antenna with band notched characteristics is present. e band rejection characteristic is achieved by loading a pair of metamaterial inspired rectangular split ring resonator (SRR) near the feed line and by etching the SRR slots on a radiating patch. e simulated and measured results reveal that the proposed antenna exhibits the impedance bandwidth over the ultrawide band (UWB) frequency range from 3.1 to 14 GHz with the voltage standing wave ratio less than 2 except for band stop bands at 3.29 to 3.7 GHz (WiMAX band), 3.7 to 4.10 GHz (C-band), 5.1 to 5.9 GHz (WLAN band), and 7.06 to 7.76 GHz (downlink X-band satellite communication), respectively. e proposed antenna fabricated on low-cost FR4 substrate has compact size of 24 × 20 × 1.6 mm3. e simulation results are compared with measured results and demonstrate good agreement with stable gain over pass bands. e proposed antenna exhibits dipole-like radiation pattern in E-plane and omni-directional pattern in H-plane. ese results led to conclusion that the presented antenna is a suitable candidate for ultrawide band UWB applications with desired band notch characteristics
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