Journal of Communication Engineering

Journal of Communication Engineering

A 2-60 GHz Microwave and Millimeter-Wave Planar Antenna with Simple Structure

Document Type : Research Paper

Authors
Aliakbar Dastranj 1
Saman Heidari 2
1 Electrical Engineering Department, Faculty of Engineering, Yasouj University, Yasouj, Iran,
2 Department of Electrical and Electronics Engineering, Shiraz University of Technology, Shiraz, Iran
10.22070/jce.2024.18283.1257
Abstract
This paper presents a compact planar ‌microstrip-fed quasi-fractal antenna for 2-60 GHz microwave and millimeter-wave systems. The ultra-wideband property of the antenna is obtained by accomplished two iterations of Sierpinski circular slots on the circular radiator along with using curve-shaped ground plane. The overall antenna size is 28×28×1.6 mm3 which is printed on FR4 substrate with a dielectric constant of 4.4. The designed antenna with a simple and compact structure provides 187% (reflection coefficient less than −10dB) impedance bandwidth, which can cover S (2-4 GHz), C (4-8 GHz), X (8-12 GHz), Ku (12-18 GHz), K (18-26 GHz), Ka (26-40 GHz), and U (40-60 GHz) frequency bands. Due to small electrical dimension of the designed antenna (0.187 λ× 0.187 λ), a large bandwidth dimension ratio of 5347 is resulted. The numerical outcomes are verified by experimental measurements. Measured data are in good agreement with the simulated results. The frequency- and time-domain characteristics of the antenna including impedance matching, far-field patterns, gain, and group delay are presented and discussed. Results show that the antenna is an excellent radiating component for use in several military and industrial systems.
Keywords
Compact size, ¬
equivalent circuit model, microstrip-fed, microwave, millimeter wave, Sierpinski circular slots
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