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Published on: February 20, 2019
Experimental study on a resonance mesh coating fabricated using a UV-lithography technique
1Ultra-precision Optoelectronic Instrument Engineering Center, P. O. Box 3018, Harbin Institute of Technology, Harbin 150080, China.
Optics Express
|March 14, 2013
Summary
A novel resonance mesh coating achieves high optical transparency and Ka-band filtering. This dual-mode spatial filter offers a 63.4% improvement in optical transmission compared to non-meshed Frequency Selective Surfaces (FSS).
Area of Science:
- Materials Science
- Optoelectronics
- Electromagnetics
Background:
- Achieving simultaneous high optical transparency and specific radio frequency (RF) bandpass filtering presents a significant challenge.
- Traditional Frequency Selective Surfaces (FSS) often compromise optical clarity for RF performance.
Purpose of the Study:
- To develop and evaluate a resonance mesh coating capable of dual-mode spatial filtering.
- To demonstrate high optical transparency alongside effective Ka-band (32 GHz) filtering.
Main Methods:
- Fabrication of a resonance mesh coating sample utilizing UV-lithography.
- Measurement of optical transmission using an Ocean Optics QE65000 spectrometer.
- Assessment of Ka-band bandpass filtering with an Agilent E8363B PNA series network analyzer.
Main Results:
- The resonance mesh coating exhibited 63.4% higher optical transmission compared to non-meshed FSS with similar aperture parameters.
- The coating demonstrated a transmittance loss below 0.21 dB at its Ka-band resonance frequency of 32 GHz.
Conclusions:
- The developed resonance mesh coating effectively functions as a dual-mode spatial filter.
- This technology enables simultaneous high optical transparency and precise Ka-band filtering, opening avenues for advanced optical-RF applications.
