Electronically steerable 1-d fabry-perot leaky-wave antenna employing a tunable high impedance surface

Raúl Guzmán-Quirós*, José Luis Gómez-Tornero, Andrew R. Weily, Y. Jay Guo

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

158 Citations (Scopus)


A novel fixed-frequency electronically-steerable one-dimensional (1-D) leaky-wave antenna is presented. The antenna is based on a parallel-plate waveguide loaded with a planar partially reflective surface and a tunable high impedance surface (HIS), which creates a 1-D Fabry-Perot leaky-waveguide. The tunable HIS consists of printed patches loaded with varactor diodes that allow the electronic tuning of the cavity resonance condition. Using a simple Transverse Equivalent Network, it is theoretically shown how the variation of the varactors' junction capacitance allows the scanning of the antenna pointing angle from broadside towards the endfire direction at a fixed frequency. Experimental results of an antenna prototype operating at 5.6 GHz are reported, demonstrating that the new reconfigurable leaky-wave antenna can provide electronic beam scanning in an angular range from 9° to 30°.

Original languageEnglish
Article number6257434
Pages (from-to)5046-5055
Number of pages10
JournalIEEE Transactions on Antennas and Propagation
Issue number11
Publication statusPublished - 1 Nov 2012
Externally publishedYes


  • Electronic beam scanning
  • Frequency selective surfaces
  • High impedances surfaces
  • Index Terms-Electromagnetic band gap structures
  • Leaky-wave antennas (LWA)
  • Partially reflective surfaces
  • Reconfigurable antennas


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