Retrodirective Rotman Lens Constraining Factors

Yunhua Zhang, S. Christie, Vincent Fusco, Robert Cahill

Research output: Contribution to conferencePaper

2 Citations (Scopus)


The mechanism by which a retrodirective Rotman lens operates is examined theoretically and prediction is compared with measurement. By deriving the reflection matrix based on the phase delay relationship between the beam ports and the array ports we show that if the phase delay difference between neighbouring ports is constrained in a particular way that the reflection matrix becomes an inverse diagonal matrix and the Rotman lens functions as a Van Atta Array hence can perform retrodirective reflection. Further, the primary factors governing the bandwidth and beam pointing error of the lens are elaborated.
Original languageEnglish
Pages 2981-2984
Number of pages2
Publication statusPublished - 2012
EventEUCAP 2012 - Prague, Czech Republic
Duration: 01 Mar 201201 Mar 2012


ConferenceEUCAP 2012
CountryCzech Republic

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  • Projects

    R1118ECI: Centre for Secure Information Technologies (CSIT)

    McCanny, J. V., Cowan, C., Crookes, D., Fusco, V., Linton, D., Liu, W., Miller, P., O'Neill, M., Scanlon, W. & Sezer, S.


    Project: Research

    Cite this

    Zhang, Y., Christie, S., Fusco, V., & Cahill, R. (2012). Retrodirective Rotman Lens Constraining Factors. 2981-2984 . Paper presented at EUCAP 2012, Prague, Czech Republic.