Modular Ka-Band Transmit Phased Array Antenna for SATCOM Applications

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Modular Ka-Band Transmit Phased Array Antenna for SATCOM Applications
Title:
Modular Ka-Band Transmit Phased Array Antenna for SATCOM Applications
Journal Title:
2024 18th European Conference on Antennas and Propagation (EuCAP)
Publication Date:
26 April 2024
Citation:
Shi, B., Nasimuddin, Chin, F., & Qing, X. (2024, March 17). Modular Ka-Band Transmit Phased Array Antenna for SATCOM Applications. 2024 18th European Conference on Antennas and Propagation (EuCAP). https://doi.org/10.23919/eucap60739.2024.10501572
Abstract:
An active electronically scanned dual circularly polarized wideband transmit phased array antenna at Ka-band (27.5 GHz to 31 GHz) is proposed for satellite communications. The transmit (Tx) phased array module is designed with 256 dual-polarized antenna elements fed by 64 eight-channel Tx beamforming core chips on a multi-layered PCB. The antenna element has a stacked square-ring slotted patch structure with two orthogonally positioned proximity-feed ports. The dual-feed can be excited orthogonally for circular polarization (CP) and offers the flexibility to reconfigure the CP radiation, either lefthanded CP (LHCP) or right-handed CP (RHCP). Furthermore, each 2×2 antenna cell can be arranged using sequential rotation manner to enhance the CP performance. The 256-element transmit array has an aperture size of 80mm × 80mm and a measured effective isotropic radiated power (EIRP) of 58 dBm, 6.2° half-power beam width (HPBW), sub 1 dB axial ratio (AR), and ±60° scanning range free of grating lobes. Scalability of the modular design is validated by implementing a 1024-element Tx phased array antenna with four 256-element array modules.
License type:
Publisher Copyright
Funding Info:
This research / project is supported by the Agency for Science, Technology, and Research (A*STAR) - Industry Alignment Fund — Pre-Positioning (IAF-PP)
Grant Reference no. : A1897a0040

This research / project is supported by the Economic Development Board (EDB) - Space Technology Development Research Programme (STDP)
Grant Reference no. : S23-020013-STDP
Description:
© 2024 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
ISBN:
978-88-31299-09-1
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