Abstract
In this paper, a novel phenyl-thiophene-2-carbaldehyde compound-based flexible substrate material has been presented. Optical and microwave characterization of the proposed material are done to confirm the applicability of the proposed material as a substrate. The results obtained in this work show that the phenyl-thiophene-2-carbaldehyde consists of a dielectric constant of 3.03, loss tangent of 0.003, and an optical bandgap of 3.24 eV. The proposed material is analyzed using commercially available EM simulation software and validated by the experimental analysis of the flexible substrate. The fabricated substrate also shows significant mechanical flexibility and light weight. The radiating copper patch deposited on the proposed material substrate incorporated with partial ground plane and microstrip feeding technique shows an effective impedance bandwidth of 3.8 GHz. It also confirms an averaged radiation efficiency of 81% throughout the frequency band of 5.4–9.2 GHz.
Highlights
Improvements in several areas of materials science have resulted in a variety of new materials with strong potential applications to microwave and millimeter-wave components
The compound 4-(Pentafluroethynyl)phenyl-thiophene-2-carbaldehyde was synthesized followed by Pd(PPh3 )4 -catalyzed Suzukki coupling reaction from 1-bromo-4-(pentafluoroethyl)benzene (1)
The dielectric constant value has an impact on the dimension of the antenna, whereas a low loss tangent controls the antenna efficiency by reducing the radiation losses
Summary
Improvements in several areas of materials science have resulted in a variety of new materials with strong potential applications to microwave and millimeter-wave components. Resonator material-based antennas, such as magneto-dielectric composite graded composite antennas, and microwave dielectric ceramics [12,13,14,15] [10], graded composite [11], dielectric resonator antennas, and microwave dielectric ceramics grabbed immense interest to improve the patch antenna’s performances in recent years.[12,13,14,15]. Conventional patch antenna, consisting of full ground plane, exhibits exhibits a directional radiation apattern with narrow bandwidth. By introducing a partial ground plane inthis the in the microstrip patch antenna researchers achieved wider bandwidth. Microstrip patch antenna researchers achieved wider bandwidth. A high loss tangent and low dielectric coefficient in NIQ thin film In this this experiment, experiment, aa new new material as aa dielectric dielectric substrate substrate for for microwave microwave.
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