Leaky-Wave Antenna with Beam Steering Capability Based on a Meandered Metallic Waveguide

Constantin Constantinides, Symon K. Podilchak, Samuel Rotenberg, Carolina Mateo-Segura, George Goussetis, José Luis Gómez-Tornero, Giovanni Toso

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)


We present a new concept for beam steering from the backward to the forward quadrant, at a fixed frequency, that minimizes the need for active, reconfigurable RF components. The compact structure may enable significant cost reductions and improved antenna efficiency when compared to more conventional beam steering approaches. The proposed 1-D leaky-wave antenna is a meandered metallic waveguide, embedded within a cavity exploiting the radiation from higher order Floquet space harmonics. This frequency scanning principle is adapted for fixed frequency operation at 20 GHz by mechanically modifying simultaneously all the lengths of the waveguide meanders. A scan range of 100° in the elevation plane is achieved by adjusting the height of the cavity. Realized gain values higher than 10 dBi are observed. We present here the theoretical principles for the design of such a fixed frequency, beam steering antenna and the corresponding results are validated by a commercial full-wave simulator and measurements of initial two prototypes.

Original languageEnglish
Title of host publication2021 15th European Conference on Antennas and Propagation (EuCAP)
ISBN (Electronic)9788831299022
Publication statusPublished - 27 Apr 2021
Event15th European Conference on Antennas and Propagation 2021 - Dusseldorf, Germany
Duration: 22 Mar 202126 Mar 2021


Conference15th European Conference on Antennas and Propagation 2021
Abbreviated titleEuCAP 2021


  • beam steerin
  • frequency scannin
  • leaky-wave antenn
  • travelling-wave antenn

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Signal Processing
  • Instrumentation


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