A compact UWB antenna with triple band notch reconfigurability

A compact ultrawideband (UWB) antenna with reconfigurable triple band notch characteristics is proposed in this paper. The antenna consists of a coplanar waveguide-fed top-cut circular-shaped radiator with two etched C-shaped slots, a pair of split-ring resonators (SRRs) on the backside and four p-t...

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Bibliographic Details
Published in:International journal of microwave and wireless technologies 2021-10, Vol.13 (8), p.826-832
Main Authors: Li, Lei, Nan, Jingchang, Liu, Jing, Tao, Chengjian
Format: Article
Language:English
Subjects:
Antenna Design, Modelling and Measurements
Antennas
Banded structure
Coplanar waveguides
Current distribution
Design
Diodes
Microelectromechanical systems
Radiation
Radiators
Spectrum allocation
Superhigh frequencies
Ultrawideband
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Summary:A compact ultrawideband (UWB) antenna with reconfigurable triple band notch characteristics is proposed in this paper. The antenna consists of a coplanar waveguide-fed top-cut circular-shaped radiator with two etched C-shaped slots, a pair of split-ring resonators (SRRs) on the backside and four p-type intrinsic n-type (PIN) diodes integrated in the slots and SRRs. By controlling the current distribution in the slots and SRRs, the antenna can realize eight band notch states with independent switch ability, which allows UWB to coexist with 5G (3.3–4.4 GHz)/WiMAX (3.3–3.6 GHz), WLAN (5.15–5.825 GHz), and X-band (7.9–8.4 GHz) bands without interference. By utilizing a nested structure of C-shaped slots and SRRs on the backside, a compact size of 18 × 19.5 mm2 is achieved along with multimode triple band notch reconfigurability. The antenna covers a bandwidth of 3.1–10.6 GHz. A prototype is fabricated and tested. The simulated and experimental results are in good agreement.
ISSN:1759-0787
1759-0795
DOI:10.1017/S1759078720001580