Apex-angle-dependent resonances in triangular split ring resonators

TL;DR

This paper investigates how changing the apex angle of triangular split-ring resonators affects their resonant frequency, Q factor, and phase shift, providing insights into their frequency selectivity and potential applications.

Contribution

It introduces a detailed analysis of apex-angle effects on TSRRs' resonant properties within the GHz range, expanding understanding of their tunability.

Findings

Resonant frequency varies with apex angle.

Q factor is influenced by apex angle.

Phase shift depends on apex angle.

Abstract

Along with other frequency selective structures [1] (circles and squares), triangular split-ring resonators (TSRRs) only allow frequencies near the center resonant frequency to propagate. Further, TSRRs are attractive due to their small surface area [2], comparatively, and large quality factors (Q) factors as previously investigated by Gay-Balmaz, et al. [3]. In this work we examine the effects of varying the apex angle on the resonant frequency, the Q factor, and the phase shift imparted by the TSRR element within the GHz frequency regime.