Utilizing photonic crystal structure to design microstrip antenna with controllable dielectric constant substrate

Abstract

A novel design method of microstrip patch antenna with photonic crystal substrate is proposed and analyzed. The method is different from the traditional one. Early work uses natural materials as the substrate to design microstrip patch antenna. In the work, dielectric cylinder arrays are designed based on periodic waveguide theory to realize the substrates with controllable dielectric constants. Meanwhile, applying dielectric cylinder array and microstrip antenna design theory, we designed and simulated a new type of antenna. The proposed antenna model is compared with homogeneous substrate structure antenna-based microstrip patch antenna and analyzed the radiation characteristics. The consistency of results shows that this method is feasible for antenna design. Afterwards, we fabricated a novel antenna with an equivalent dielectric constant of 2.94, which is further verify the feasibility of the method. Finally, the performance of designed antenna is analyzed with different cylinder height. The results show that the novel antenna design method maybe possess great significance to the design of high-gain miniaturized antenna.

KEYWORDS:

• Microstrip patch antenna
• photonic crystal
• dielectric constant

Acknowledgments

This work was supported by the open foundation of the Science and Technology on Electronic Test & Measurement Laboratory under (Grant 6142001180205); Hunan Provincial Natural Science Foundation of China (grant number2019JJ 50671); Scientific Research Fund of Hunan Provincial Education Department (GrantNo.18C0239).

Disclosure statement

No potential conflict of interest was reported by the author(s).