A Curved 3-D Printed Microstrip Patch Antenna Layout for Bandwidth Enhancement and Size Reduction

Abstract

Microstrip patch antennas are widely employed in several applications, thanks to their low profile, low cost, and easy manufacturing. However, the demand for new technologies providing compactness and high performance poses a long-lasting challenge for the antenna designer. Traditional methods for bandwidth improvement and size reduction have some drawbacks, tied mostly to poor radiation performance or troublesome implementation. In this letter, a novel, simple, but effective patch antenna layout exploiting the customizable form factor guaranteed by 3-D printing (or other fabrication techniques) is presented. An appropriate modification in the vertical profile of the radiator is introduced. Specifically, without loss of generality, a cylindrical shape has been selected as a proof of concept. The proposed solution allows to increase the impedance bandwidth from 2.9% of a standard flat microstrip patch to 9%. Additionally, the projected antenna resonant size can be reduced up to 38% compared to its flat counterpart.

Dual-wide Band bended cloth Antenna for ISM and WLAN applications

“…[7] In this study, a 2 x 2 array was used to enhance the performance of patch antenna, and the behaviour of a circularly polarised array at an inclusive range of fold angles and impact of physical reconfiguration were evaluated. [8] The proposed antenna increased the impedance bandwidth from 2.9% (of a standard flat microstrip patch) to 9.0% [9]. Outcomes in this paper demonstrated that the proposed system is a good design choice of microstrip antenna for Bluetooth, Wi-Fi, Wi-MAX, Telemedicine, and UWB applications.…”

Impedance Bandwidth Improvement of a Planar Antenna Based on Metamaterial-Inspired T-Matching Network

“…From Eqn. (25) and ( 26), for = 1, we obtain (27) The expression for effective gain given by Eqn. (24) then becomes (28) The resonant resistance R can be calculated using (29) Then from Eqs.…”

“…[26] is achieved by loading the antenna with shorting pins and slots. In [27] the bandwidth is enhanced by simply curving the patch antenna in a partial cylindrical shape. In [28] one-dimensional electromagnetic bandgap ground structures and two-stage beam directors are employed in an inverted-L antenna topology to enhance the bandwidth.…”

A novel 3D printed curved monopole microstrip antenna design for biomedical applications

“…Substrate materials with a low thickness value are widely preferred as they provide improved performance, enhanced bandwidth, and less restricting structures for radiation areas. Various techniques are utilized to manufacture MAs, including wet-etching, inkjet printing, screen printing, and threedimensional (3D) printing [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. 3D printing has a promising potential in antenna manufacturing as it allows faster, more convenient, and less expensive manufacturing than the conventional tech techniques, known as additive manufacturing [10,11].…”