Circular Polarization Dual-Feed Array Antenna for X-Band Satellite Communication
- Resource Type
- Authors
- Nguyen Duy Phong; Linh Ho Manh; Kiem Nguyen Khac; Dao Ngoc Chien
- Source
- 2018 IEEE Seventh International Conference on Communications and Electronics (ICCE).
- Subject
- 020301 aerospace & aeronautics
Computer science
business.industry
Axial ratio
Capacitive sensing
Impedance matching
X Band Satellite Communication
020206 networking & telecommunications
Ranging
02 engineering and technology
Polarization (waves)
Optics
0203 mechanical engineering
0202 electrical engineering, electronic engineering, information engineering
Communications satellite
business
Circular polarization
- Language
A circular polarization dual-feed array antenna for X-band satellite is proposed. In this paper, sequential phased rotation principle applied for 2×2 sub-arrays and 4×4 array is introduced. A dual feeding network for single element is analyzed and designed in such a way that it can obtain 90 degree phase difference and 1:1 power ratio for each output port. The capacitive annular gaps are placed on inside of square driver patch for impedance matching. Consequently, X-band ranging from 8.04 to 8.4 GHz is covered completely and axial ratio is less than 2 dB. An 4×4 array antenna has a simulated gain of 13.76 dBi is achieved at 8.2 GHz. The whole antenna achieves a compact size and shows a great potential in satellite communication.