A Wideband Reconfigurable Reflectarray Using the Frequency Pulling Technique

In this work, we present an elegant, simple to fabricate and very cost effective technique for designing wide-band reconfigurable reflectarray antennas. First, we utilize our recently proposed frequency pulling technique (FPT) to increase the bandwidth of reflectarray antennas (RAs). Notably, based...

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Bibliographic Details
Published in2024 International Applied Computational Electromagnetics Society Symposium (ACES) pp. 1 - 2
Main Authors Elaouinate, Malak, Exadaktylos, Christos, Koutinos, Anastasios G., Zekios, Constantinos L., Georgakopoulos, Stavros V.
Format Conference Proceeding
LanguageEnglish
Published The Applied Computational Electromagnetics Society 19.05.2024
Subjects
Backplanes
Beams
Computational electromagnetics
Costs
Electric variables
Reflector antennas
Time-frequency analysis
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Summary:In this work, we present an elegant, simple to fabricate and very cost effective technique for designing wide-band reconfigurable reflectarray antennas. First, we utilize our recently proposed frequency pulling technique (FPT) to increase the bandwidth of reflectarray antennas (RAs). Notably, based on FPT, a simple feeding network is properly designed and connected at the backplane of each RA's unit cell. In turn, we connect readily available diodes to this feeding network properly changing its electrical characteristics and applying the desired reconfigurability. To demonstrate our technique we utilize a traditional microstrip patch element. Specifically, we ( a ) apply our FPT method feeding each unit cell at two properly selected feed points and achieving a 28% fractional (gain) bandwidth, and (b) use a single diode to reconfigure the RA's beams between 30O and -30° in the \phi=0^{{\circ}} plane. Our designed RA shows great beam stability for both beam states within its entire 8.85 GHz to 11.75 GHz bandwidth of operation.