Broadband Transponder Based on Frequency-Reconfigurable Cluster Antenna and Phased Modulators

Research output: Contribution to journalLetterScientificpeer-review


Research units

  • Chalmers University of Technology


This letter presents a new concept of broadband transponder based on frequency-reconfigurable cluster antenna and phase-variable modulators. The transponder in this concept has multiport antenna, whose elements have strong mutual coupling between them. The technique presented in this concept takes advantage of the coupling between the antenna elements instead of avoiding it. By properly weighting the phases of the modulated signals in each port, the backscattered received power can be maximized. The weighting is done differently for different sets of frequencies to achieve instantaneous bandwidth over the frequency band of interest.


Original languageEnglish
Pages (from-to)238 - 242
JournalIEEE Antennas and Wireless Propagation Letters
Issue number2
Early online date23 Dec 2019
Publication statusPublished - Feb 2020
MoE publication typeA1 Journal article-refereed

    Research areas

  • backscattering, impedance matching, Internet of Things (IoT), mutual coupling, modulation, scattering matrices, wireless sensor networks (WSNs)

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