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Band-Pass Filtering Cross-Polarization Converter Using Transmitarrays
Jialin Feng1, Hongyu Shi1, Jianjia Yi2
1Ministry of Education Key Laboratory for Multifunctional Materials and Structures, Xi'an Jiaotong University, Xi'an 710049, China.
Materials (Basel, Switzerland)
|April 30, 2021
Summary
This study presents a novel microwave device combining band-pass filtering and cross-polarization conversion for radomes. The device achieves a high polarization-conversion ratio with excellent out-of-band rejection.
Area of Science:
- Electromagnetics and Microwave Engineering
- Materials Science for RF Applications
Background:
- Radomes require advanced microwave devices for polarization conversion and band-pass filtering.
- Existing devices may lack high polarization-conversion ratios or sufficient out-of-band rejection.
Purpose of the Study:
- To develop a novel microwave device integrating band-pass filtering and cross-polarization conversion.
- To achieve an extremely high polarization-conversion ratio and excellent out-of-band rejection for radome applications.
Main Methods:
- Conceptually combined band-pass filters and cross-polarization converters.
- Utilized electromagnetic simulation, fabrication, and experimental measurement.
- Independently tuned transmission zeros within the passband.
Main Results:
- Successfully realized a band-pass filtering cross-polarization converter.
- Achieved an extremely high polarization-conversion ratio.
- Demonstrated excellent out-of-band rejection (>30 dB lower, >40 dB upper edges).
- Verified flexible and independent tuning of transmission zeros.
Conclusions:
- The developed device meets the stringent requirements for advanced radome applications.
- Experimental results closely align with simulation predictions, validating the design.
- The device offers a promising solution for enhanced microwave performance in radomes.
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