Inverse Design of Broadband Antennas for Terahertz Devices Based on 2D Materials

TL;DR

This paper presents an inverse design method for broadband terahertz antennas using 2D materials, improving power transfer efficiency and addressing impedance matching challenges.

Contribution

It introduces a procedural generation algorithm for designing customizable THz antennas that meet specific impedance, bandwidth, and contact topology criteria.

Findings

Achieves up to 40% improvement in power transfer efficiency over traditional designs.

Validates designs with high-fidelity electromagnetic simulations.

Addresses impedance mismatch issues in THz antenna applications.

Abstract

Terahertz (THz) technology, a cornerstone of next-generation high-speed communication and sensing, has long been hindered by impedance mismatch challenges that limit device performance and applicability. These challenges become particularly pronounced when ultrasensitive two-dimensional (2D) materials are employed as the device substrate in the THz range, further complicating their integration into real-world applications. Furthermore, conventional antenna designs often fail to provide adequate matching across the extensive THz spectrum. In this work, we tackle these challenges using a procedural generation algorithm to design THz broadband antennas that satisfy specific performance criteria. Namely, the developed inverse design methodology enables customization for the target impedance value, bandwidth, and contact topology requirements. The proposed antenna achieves an improvement of up to 40\% in power transfer efficiency compared to traditional bow-tie antennas under realistic operating conditions. High-fidelity electromagnetic simulations validate these results, confirming the design's practicality for THz applications. This work addresses critical limitations of existing antenna designs and advances the feasibility of high-frequency applications in both communication and sensing.