Abstract
A microstrip leaf-shaped printed monopole antenna bioinspired on the Inga marginata leaves is presented in this paper for UWB applications. A parametric study of the proposed antenna bioinspired geometry was conducted in order to verify their resonant properties. The antenna was designed with a rectangular slitted ground plane for impedance matching and fabricated on inexpensive glass fiber substrate and fed by a 50 Ω microstrip line. Numerical and experimental results were obtained. The results show an impedance bandwidth superior to 10.26 GHz, greater than the bandwidth considered UWB (7.5 GHz). Antenna dimensions were optimized with the computer program Ansys Designer® used to simulate the electromagnetic behavior of the antennas by the method of moments.
Highlights
Wireless communication systems have become increasingly popular due to the diversity of services offered, requiring portable communication devices that operate in multiple frequency bands
This paper presents a parametric study of the monopole antenna printed on microstrip which is bioinspired on the Inga marginata leaf for applications in UWB systems
WS and LS dimensions were set for impedance matching purposes while the dimensions R1, R2 and R3 were adjusted for tuning the antenna operating frequency band
Summary
Wireless communication systems have become increasingly popular due to the diversity of services offered, requiring portable communication devices that operate in multiple frequency bands. To meet the requirements of different systems, the use of embedded antennas with small size, ease of integration, desired gain pattern, large bandwidth, among other features that come with the device miniaturization and low-cost manufacture. It appears that the microstrip antennas are promising candidates to address these specific requirements, as well as to operate at different frequency bands. The UWB systems assume greater noise immunity, low-cost equipment, low-power operation, among other advantages Due to these characteristics, this technology stands out among the wireless communications systems alternatives for short distances, especially on the fourth generation (4G) of mobile communications [7]. The antenna studied was numerically analyzed through the commercial program Ansys Designer® and experimentally analyzed with the N5230A network analyzer from Agilent Technologies
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