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A Hybrid Electronical/Mechanical Continuous Transverse Stub Phased Array for Ka-Band Satellite Communications

  • Kai Wang
  • , Zhi Tao Du
  • , Kai Xu Wang
  • , Yunlong Lu
  • , Lin Mei
  • , Ye Wang
  • Pengcheng Laboratory
  • Harbin Institute of Technology Shenzhen
  • Ningbo University
  • HIT

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We present a novel continuous transverse stub (CTS) phased array with a hybrid electronical/mechanical beam steering for Ka-band satellite communication. The elevation angle scanning is controlled electrically whereas the azimuth angle scanning is achieved by rotating the array mechanically. Structurally, the two-dimensional (2-D) CTS phased array is composed of a set of one-dimensional (1-D) CTS arrays with a stable boresight radiation covering the Ka-band. To build the 1D CTS array, a 1 × 4 subarray is proposed and excited by a quasi-TEM mode implemented with the substrate integrated coaxial line (SICL). The parallel plate stub of CTS is designed in stepped form and a differential series-fed is also applied to the subarray for wide bandwidth and simplified feeding network. The 2-D CTS phased array can be flexibly scaled to the size with m × 4 n elements based on the proposed subarray, and a 8 × 8 array is finally designed and analyzed. The simulated results show that an impedance bandwidth ranging from 26 to 31.2 GHz is obtained and a stable boresight radiation is also achieved from 27 GHz to 31 GHz with a peak gain of 21.4 dBi and gain variation within 1.7 dBi. A ± 50° beam scanning range is synthesized using the active element pattern method in the H -plane with a gain fluctuation within 4.2dBi.

Original languageEnglish
Title of host publication2025 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, AP-S/CNC-USNC-URSI 2025 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1953-1955
Number of pages3
ISBN (Electronic)9798331523671
DOIs
StatePublished - 2025
Externally publishedYes
Event2025 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, AP-S/CNC-USNC-URSI 2025 - Ottawa, Canada
Duration: 13 Jul 202518 Jul 2025

Publication series

NameIEEE Antennas and Propagation Society, AP-S International Symposium (Digest)
ISSN (Print)1522-3965
ISSN (Electronic)1947-1491

Conference

Conference2025 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, AP-S/CNC-USNC-URSI 2025
Country/TerritoryCanada
CityOttawa
Period13/07/2518/07/25

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