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We present an in depth look at the challenges involved in using analogue retrodirective arrays for satellite communications. The main technical issues surrounding the development of a retrodirective (self-steering) Satellite Communications (SATCOM) system are given and techniques for mitigating these issues provided. Detailed results are given for a prototype high performance circularly polarized retrodirective array architecture suitable for mounting on an un-stabilized mobile platform. The paper concludes with practical retrodirective L-band array results with the array used to acquire actual broadband satellite data signals from a commercial L-band satellite system. Received satellite signals as low as -130dBm at the antenna elements are tracked. Accurate self-tracking occurs over the azimuth range of up to +/- 40 degrees.
Original languageEnglish
Pages (from-to)1641-1621
Number of pages8
JournalIEEE Transactions on Microwave Theory and Techniques
Issue number5
Early online date25 Mar 2016
Publication statusPublished - May 2016


  • Antenna Array, phase locked loop, phased array


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