Demonstration of an Integrated Planar Guided-wave Terahertz Synthesized Filter

TL;DR

This paper demonstrates the practical implementation of an integrated planar guided-wave terahertz filter, applying microwave synthesis methods to achieve desired filter responses at 0.8 THz, with results matching theoretical predictions.

Contribution

It is among the first to experimentally realize THz filter synthesis using microwave engineering techniques for integrated planar filters.

Findings

Transmission characteristics match theoretical and simulation results

Successful synthesis of low-pass filters at 0.8 THz

Demonstrates feasibility of filter design at terahertz frequencies

Abstract

At terahertz (THz) frequencies there are few experimental works which demonstrate filter synthesis to obtain a desired filter response (i.e., Chebyshev, Butterworth, Bessel, etc.). Currently, the majority of literature perform THz filter analysis, that is, characterizing the filter response after design procedure. In this paper, we apply filter synthesis methods from microwave engineering to design several integrated planar low-pass filters fc = 0.8 THz). We find that the transmission characteristics align with theory and simulation.