Novel Varactor-Loaded Phasing Line for Reflectarray Unit Cell with Large Reconfigurability Frequency Range - New Contributions in Information Systems and Technologies - page 8

4 Conclusion

An active reflectarray unit cell with a large reconfigurability frequency range has been
proposed. A wideband varactor loaded phasing line, based on the use of two radial
stubs, has been properly synthesized to actively tune the phase reflected by an
aperture-coupled reflectarray cell. A prototype, embedded into a 0.46

0 cell at
f 0 =11.5 GHz, has been designed, obtaining good phase tuning ranges within a large
frequency range of about 1.35 GHz, 3.4 times greater with respect to that obtained in
a previous configuration proposed by the same authors [9]. A preliminary and
successful experimental test has been performed on a reflectarray cell prototype
scaled at the frequency of 10 GHz. The proposed unit cell can be useful adopted in
radio-communication applications requiring reconfiguration capabilities with a certain
degree of frequency agility.

ʻ 0 ×0.46 ʻ

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