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An S-band multimode reflector antenna for a satellite constellation tracking system
Handong Wu1, Yuhui Ren2, Yingying Wang1
1Xi'an HengDa Microwave Technology Development Co., Ltd., Xi'an, China.
Scientific Reports
|October 18, 2023
Summary
This study introduces a novel S-band multimode reflector antenna with a unique reflector design for a flat-top beam. The innovative antenna achieves high gain and a stable beam shape, ideal for satellite tracking.
Area of Science:
- Electromagnetics and Applied Electrophysics
- Antenna Theory and Design
Background:
- Traditional multimode antennas rely on complex feed systems.
- A new approach focuses on innovative reflector design for multimode operation.
Purpose of the Study:
- To present an S-band multimode reflector antenna utilizing novel reflector theory.
- To achieve a high-gain, flat-top beam radiation pattern.
Main Methods:
- The main reflector is divided into middle and edge regions with a specific height difference (approx. λ0/4).
- This design facilitates partial wave cancellation to shape the radiation pattern.
Main Results:
- Achieved a voltage standing wave ratio < 1.5 across 2.8-3.4 GHz (19.4% bandwidth).
- Obtained a gain > 29.2 dB within the S-band.
- Demonstrated a stable flat-top beam pattern within ±2°.
Conclusions:
- The proposed multimode reflector antenna design is effective for generating high-gain flat-top beams.
- This antenna is suitable for applications like satellite constellation tracking.
