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Design and Development of an Electronically Controlled Polarization Agile Slotted Waveguide Array Antenna

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Publicat a:Defence Science Journal vol. 75, no. 4 (2025), p. 433-444
Autor principal: Chakrabarti, Mandar
Altres autors: Chattopadhyay, Abir, Gangopadhyaya, Malay, Chatterjee, Ayan, Purkait, Kabita
Publicat:
Defence Scientific Information & Documentation Centre
Matèries:
Antenna arrays
Horizontal polarization
Antennas
Multilayers
Electronic control
Vertical polarization
Circular polarization
Waveguides
Remote sensing
Data processing
Design
Remote sensing systems
Algorithms
Efficiency
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Resum:This paper presents a new design for a polarization agile slotted waveguide array antenna that can dynamically switch between four polarization states: Vertical Polarization (VP), Horizontal Polarization (HP), Right-Handed Circular Polarization (RHCP), and Left-Handed Circular Polarization (LHCP) via electronic control of the antenna’s power feed. The multi-layered antenna uses a custom-designed patch array as an actively regulated polarizing grid placed over the slotted waveguides. A 1-by-4 antenna array operating at 2.5 GHz was designed, fabricated, and tested to ensure its effectiveness. Results show realized gains of 13.84 dBi (VP), 11.81 dBi (HP), 11.86 dBi (RHCP), and 11.66 dBi (LHCP), with an axial ratio of 1.1dB and impedance bandwidth of 32 MHz. This architecture provides greater flexibility and performance over traditional designs. It is also suitable for modern radar and remote sensing systems due to its creative design and easy integration with advanced polarimetry algorithms.
ISSN:0011-748X
DOI:10.14429/dsj.20366
Font:Military Database