Terahertz low-pass filter based on cascaded resonators formed by CPS bending on a thin membrane

被引：9

作者：

Gomaa, Walid ^{[1
]}

Smith, Levi ^{[1
]}

Shiran, Vahid ^{[1
]}

Darcie, Thomas ^{[1
]}

机构：

[1] Univ Victoria, Dept Elect & Comp Engn, Victoria, BC, Canada

来源：

OPTICS EXPRESS | 2020年 / 28卷 / 21期

基金：

加拿大自然科学与工程研究理事会;

关键词：

DEFECTED GROUND STRUCTURE; WAVE-GUIDE; LOWPASS FILTER; DESIGN; CHIP; REALIZATION; INTEGRATION;

D O I：

10.1364/OE.403702

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A membrane-based coplanar-stripline (CPS) transmission-line platform has recently enabled implementation of diverse THz system-on-chip (TSoC) components. In this paper, we demonstrate an elliptic-function THz low-pass filter (TLPF) using cascaded lambda/4 resonators between the right-angle bending of a CPS transmission line defined on a 1 mu m-thin membrane. We investigated the effect of bending the CPS transmission line with different angles that introduces a frequency response similar to a simple LC low-pass filter (LPF) and facilitates the design of a desired roll-off performance using traditional methods. ANSYS HFSS was used to provide a full-wave analysis and characterize the effective parameters of the TLPF with a designed cutoff-frequency around 0.6 THz. Using 7 sections of right-angle CPS bending with total length 1.4 mm, we demonstrate experimentally an elliptic-function TLPF characterized by a low-ripple at passband, a roll-off transition with zero transmission near the cutoff frequency and a wide stopband with -60 dB rejection. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

引用

页码：31967 / 31978

页数：12

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