In this paper, the size of a log-periodic dipole array antenna is reduced using partially applied folded planar helix dipole elements. The proposed antenna shows almost no gain deterioration in the ...

When you search "HDTV antenna" on Amazon, you're going to see about 20 to 30 cheap flat-panel antennas made for city homes. Though they all look the same, I found the Channel Master Flatenna ...

Abstract: This letter proposes a tunable multibeam periodic leaky-wave antenna (LWA) based on radiation of multiple space harmonics. The LWA is composed of a microstrip transmission line and a set of ...

Photonic crystals are periodic optical structures that can control the flow of light. Multiple reflections from surfaces separated by a distance similar to the wavelength prevent an optical beam ...