This paper presents a Luneburg lens and a Luneburg reflector lens along with the
corresponding compact and cost-effective multibeam antennas in the Ka-band. The …

Quasi-optical beamformers provide attractive properties for antenna applications at
millimeter-wave (mm-wave) frequencies. Antennas implemented with these beamformers …

This paper presents a novel metasurface antenna whose radiation characteristics can be
remotely controlled by optical means using PIN photodiodes. The proposed reconfigurable …

A substrate integrated waveguide (SIW) H-plane horn antenna with miniaturized longitudinal
dimension and increased gain is proposed by loading slow-wave (SW) structures in the form …

A perfect magnetic conductor (PMC) packaging concept is utilized at 30 GHz, which
suppresses the higher order cavity modes, improves insertion losses, and helps in …

A pattern reconfigurable metasurface antenna for an electromagnetic torso imaging system
operating at the ultrahigh frequency (UHF) band is presented. To meet the requirements of …

For the first time, a liquid crystal (LC) filled lens antenna is investigated for beam steering in
this paper. The LC's anisotropy is applied inside a semicircular shaped parallel-plate …

We propose a novel method to extend the scanning range of planar phased arrays based on
a phase gradient metasurface. The phase gradient metasurface is developed by the …

This letter presents a broadband 3-D-printed circularly polarized (CP) spherical Luneburg
lens (LL) with the linearly polarized feed antenna for the X-band. In order to implement …

In this article, two miniaturized multimode pattern-steering antennas for Internet of Things
(IoT) applications are proposed. A compact multimode cavity functions both the hybrid and …