NDLI: Experimental realisation of micromachined terahertz electromagnetic crystal (EMXT) waveguide bandpass filter

Content Provider	IET Digital Library
Author	Lu, Hongda Lv, Xin Si, Liming Wu, Yuming Liu, Yong Chao
Abstract	A terahertz (THz) micromachined waveguide bandpass filter based on metallic two-dimensional (2D) electromagnetic crystal (EMXT) with a square lattice is proposed. The filter structure with three dual-mode circular cavities and two rectangular waveguides is obtained by removing and optimising the EMXT unit cells in a 15 × 20 cells array. This filter, fed by WR2.2 waveguides, is fabricated with the silicon microelectromechanical systems technique and measured using a vector network analyser (VNA) with an extender. The measured fractional bandwidth is 7.6% with a 426.5 GHz centre frequency. The best insertion loss and return loss are 2 and 24 dB, respectively. These results agree well with the simulations. The proposed THz EMXT filter indicates a novel approach to obtain THz waveguide passive devices and has application potential in THz communication and detection.
Starting Page	1952
Ending Page	1953
Page Count	2
ISSN	00135194
Volume Number	50
e-ISSN	1350911X
Issue Number	Issue 25, Dec (2014)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/el/50/25
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/el.2014.1354
Journal	Electronics Letters
Publisher Date	2014-11-27
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	2D EMXT Band-pass Filter Crystal Filter Dual-mode Circular Cavity EMXT Unit Cell Array Extender Filter Structure Frequency 426.5 GHz Loss 2 DB Loss 24 DB MEMS And NEMS Device Technology MEMS Technique Metallic Two-dimensional Electromagnetic Crystal Micromachined Terahertz Electromagnetic Crystal Waveguide Bandpass Filter Micromechanical Device Passive Filter Passive Network Rectangular Waveguide Silicon Microelectromechanical System Square Lattice Submillimetre Wave Filter Terahertz Wave Device THz Communication THz Micromachined Waveguide Bandpass Filter THz Waveguide Passive Device Vector Network Analyser VNA Waveguide And Microwave Transmission Line Component Waveguide Filter WR2.2 Waveguide
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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