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New reconfigurable HMSIW associated to horn antenna

This paper concerns the design of a beam steerable Leaky Wave Antenna (LWA) based on integrated electronic devices. The design uses a Half-mode Substrate Integrated Waveguide (HMSIW) where the short circuited wall (via holes) is modified to integrate Varactor diodes. Thanks to the behavior of these varactor diodes, the wave number and the phase shift of the propagating signal can be controlled. To narrow the beam in E plane, the HMSIW antenna is used as feeder of a horn like structure. This antenna allows to have a beam steering of 25° for a fixed center frequency in H plane and a 24° beamwidth in E plane.