Complementary Harmonic Suppression of Radiation at 300/600 GHz by a Pair of Frequency-Selective Surfaces Fabricated on Polyimide Membranes
- Resource Type
- Conference
- Authors
- Yuan, Hui; Zhang, Meng; Erni, Daniel; Roskos, Hartmut G.
- Source
- 2023 48th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2023 48th International Conference on. :1-2 Sep, 2023
- Subject
- Aerospace
Bioengineering
Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Engineered Materials, Dielectrics and Plasmas
Fields, Waves and Electromagnetics
Photonics and Electrooptics
Signal Processing and Analysis
Optical filters
Optical losses
Insertion loss
Polyimides
Harmonic analysis
Metamaterials
Loss measurement
- Language
- ISSN
- 2162-2035
A harmonic complementary band-stop filter pair for standing-wave suppression at both the signal and the local-oscillator (LO) frequency of a sub-harmonic heterodyne measurement and imaging system is presented. The design of the filters is based on complementary metamaterial structures for 300 GHz, respectively 600 GHz. The filters are implemented on ultra-thin polyimide (PI) membranes which helps to achieve a low insertion loss at the pass bands and gives the filters mechanical flexibility. Experimental results show that the filters provide a 30-dB isolation at the respective stop bands and that they have less than 0.1-dB insertion loss at the pass bands.