Investigation of printed slot antennas based on Euclidean geometries

Abstract

Euclidean and fractal terms are mathematically and physically important terms in antenna design, but rarely reported studies had discussed these terms together in antenna design in their texts. This paper first gives an overview of Euclidean and fractal antennas with useful and satisfactory facts. Four printed slot antennas are then studied using Euclidean slot shapes printed in the ground plane with and without Euclidean patches using FR4 substrate. These antennas are employed to investigate their suitability as simple alternatives to complicated fractal geometries and their specific formulas. Parametric analyses with feedline lengths and patch scaling aspects are adopted to generate single, dual, and multiband responses. These parametric studies provide different outcomes and choices for antenna electrical specifications suitable for various wireless applications. It is clear that inserting Euclidean patches to the printed slot in the ground plane influence inducing multiple operating bands as similar as multiband fractal antenna, but without using specific formulas or complicated outlines. All proposed antennas have low-profile topologies, good compactness, and more competitive electrical specifications than many reported fractal antennas. The simulations of the proposed printed slot antennas are in good compatibility with the measurements.

Effects of Different Manufacturing Techniques on the Performance of Planar Antennas

“…In 20 and 21 , a wide band slot-loaded patch antenna suitable for a low-power wireless transmission system is discussed. There are many configurations and types of slots that can be combined with the simple patch antenna to influence the antenna operation 22 .…”

Effects of different manufacturing techniques on the performance of planar antennas

“…In references 20 , 21 , a wide band slot-loaded patch antenna suitable for a low-power wireless transmission system is discussed. There are many configurations and types of slots that can be combined with the simple patch antenna to influence the antenna operation 22 . In our case, having a single operating frequency range that would cover the WiFi 2.4 GHz frequency band is desirable.…”

Characteristic modes of a slot antenna design based on defected ground structure for 5G applications

“…A printed slot antenna with defects in the ground plane that produce five bands was successfully designed in 6 . Different Euclidean slot forms printed on the ground plane with and without Euclidean patches were used to investigate printed slot antennas 7 . Two rectangular slots defected on the ground plane and five strips located inside the two slots were employed to operate at four bands (2.44–2.79, 5.88–6.39, 7.5–8.25, 11.27–12.69) GHz in 8 .…”