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Design for SAW Antenna-Plexers with Improved Matching Inductance Circuits
1Department of Electrical Engineering and Graduate Institute of Communication Engineering, National Taiwan University, Taipei 10617, Taiwan.
Micromachines
|January 23, 2024
Summary
This study presents novel antenna-plexers for 4G and 5G mobile communications, integrating surface acoustic wave (SAW) technology for enhanced performance in LTE and Wi-Fi bands.
Area of Science:
- Electrical Engineering
- Electromagnetics
- Signal Processing
Background:
- Carrier aggregation in LTE 4G and 5G necessitates advanced RF front-end components.
- Existing antenna-plexer designs face challenges in integrating multiple frequency bands efficiently.
Purpose of the Study:
- To design and validate novel antenna-plexers for LTE 4G and 5G carrier aggregation.
- To develop a Surface Acoustic Wave (SAW) extractor and an Upper- and Mid-High Band (UHB + MHB) diplexer.
Main Methods:
- The SAW extractor integrates bandpass and band-stop filters using modified Butterworth-van Dyke (mBVD) resonators and SAW resonators.
- The UHB + MHB diplexer utilizes microwave and SAW filters with a matching inductor, employing frequency response methods.
- The design incorporates a SAW interdigital transducer (IDT) structure.
Main Results:
- The SAW extractor meets product specifications from 0.7 to 2.7 GHz.
- The UHB + MHB diplexer is designed for 2.4 GHz + Wi-Fi 6E applications.
- Experimental results show strong agreement with simulation, confirming design feasibility.
Conclusions:
- The developed antenna-plexers are feasible and meet performance specifications for 4G and 5G applications.
- The integrated SAW extractor and UHB + MHB diplexer offer a viable solution for multi-band RF systems.
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