Abstract
This study is addressing the slotted ring resonator effect on the performance of the ultra-wide band (UWB) microstrip antenna. Two types of metamaterial with double slotted ring resonators (SRR), circular (C-SRR) and square (S-SRR), are studied and implemented on back of the antenna. The design examines the effect of the number of the SRR and its position with respect to the antenna’s ground plane and the rotation of the inner and outer C-SRR rings on different antenna characteristics. The dimensions of the antenna are 45 mm × 31 mm × 1.27 mm. The implementation of the SRR increased the antenna bandwidth to cover the range from 2.2 GHz to 9.8 GHz with rejected bands and frequencies. Antenna simulated characteristics like return loss, maximum gain and radiation pattern are obtained utilizing HFSS. The return loss measurement and the VSWR of the antenna with all SRR configuration studied are in good agreement with simulated results.
Highlights
Antennas are considered significant elements of any wireless communication system
In [18], Mahmud et al introduced a microstrip antenna with a modified triangular patch, and two arrays of 2 × 4 square slotted ring resonators (SRR) were placed on the radiating patch and ground plane
Li et al [23], have used an array of a complimentary double-ring SRR on the conducting backplane of a square patch antenna with a single resonance frequency at 3.5 GHz. Their proposed design has resulted in a 22% size reduction, where as other antenna parameters, such as directivity and maximum gain were not affected by the introduction of the SRR
Summary
Antennas are considered significant elements of any wireless communication system. An antenna is defined as a metallic structure used for transmitting and receiving signals or radio waves [1,2]. In [12], Sultan et al introduced a double notched self-complementary UWB antenna It consists of semi-ring with tapered section, T-shaped slot etched in the radiating patch and two. In [18], Mahmud et al introduced a microstrip antenna with a modified triangular patch, and two arrays of 2 × 4 square SRRs were placed on the radiating patch and ground plane. Their proposed antenna has a bandwidth from 3.1 GHz to. Their proposed design has resulted in a 22% size reduction, where as other antenna parameters, such as directivity and maximum gain were not affected by the introduction of the SRR It is expected that SRR increase antenna’s bandwidth and provides bandwidth and provides the possibility to transmit orwill reject specific frequencies bands based on SRR the possibility to transmit or reject specific frequencies bands based on SRR design parameters
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