Lakhdar Zaid and  Albane Sangiovanni,  A Reconfigurable Microstrip Patch Antenna with Polyphase Filter for Polarization Diversity and Cross Polarization Filtering Operation.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    November 2017, vol. 121(1). 47 - 50
    [viewed 20 April 2024]. Available from: https://publications.waset.org/pdf/10006122.