Abstract
This paper presents the design and realization of a compact size multimode frequency reconfigurable antenna. The antenna consists of a triangular-shaped monopole radiator, originally inspired from a rectangular monopole antenna. Slots were utilized to notch the desired frequency while the PIN diodes were utilized to achieve frequency reconfigurability. The antenna can operate in wideband, dual-band, or tri-band mode depending upon the state of the diodes. To validate the simulation results, a prototype was fabricated, and various performance parameters were measured and compared with simulated results. The strong agreement between simulated and measured results along with superior performance as compared to existing works in the literature makes the proposed antenna a strong candidate for ISM, 5G-sub-6 GHz, and S-band applications.
Highlights
Multifunctional antennas have gained considerable attention in the past decade due to advanced level technologies like 5G, Internet of Things (IoT), etc., along with a need for compact devices
A compact frequency reconfigurable antenna is proposed in this paper
To cover 5G sub—6 GHz band, a wideband triangle-shaped monopole antenna was designed, which was originally inspired from a rectangular monopole antenna
Summary
Multifunctional antennas have gained considerable attention in the past decade due to advanced level technologies like 5G, Internet of Things (IoT), etc., along with a need for compact devices. Among various types of antennas proposed for sub-6-GHz applications, most of the reported works are related to reconfigurable antennas where RF-PIN diode for frequency reconfigurability was widely studied by the researchers to achieve single band, dual-band, and multiple-band reconfigurable operations [5,6,7,8,9,10,11,12,13,14,15,16,17]. The antenna offers a compact size with the advantages of flexibility, it does not support frequency reconfiguration Another antenna by using the proximity-coupling feed to cover the WLAN and 5G-sub-6-GHz was presented in [7]. The work reported antennas in [11,12] offer compact size, they cover very limited bandwidth, making them not suitable for modern-day devices operates in wideband frequency spectrums
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