Plane wave excitation by taper array for optical leaky waveguide antenna

Silicon-based optical leaky wave antenna with narrow beam radiation.

We propose a design of a dielectric (silicon nitride) optical leaky wave antenna (OLWA) with periodic semiconductor (silicon) corrugations, capable of producing narrow beam radiation. The optical antenna radiates a narrow beam because a leaky wave (LW) with low attenuation constant is excited at one end of the corrugated dielectric waveguide. We show that pointing angle, beam-width, and operati...

Design of Millimeter-wave Slotted-Waveguide Planar Antenna for Sub-array of Beam-scanning Antenna

Beam-scanning antennas are attractive for high-bit-rate data communication systems and high resolution sensing systems in millimeter-wave band. Waveguide antenna is one of the most attractive antennas for such millimeter-wave systems because of its low loss and high efficiency characteristics in high frequency band. Horizontally-beam-scanning antennas such as phased arrays and DBF (Digital Beam...

UWB Antenna Array with Comb Taper Slot Antenna Elements

A uniformly spaced comb taper slot antenna array is proposed for directional ultra-wideband (UWB) applications. The UWB array consists of four identical comb taper slot antennas, a mutistage with four-way microstrip UWB power divider, and four identical coaxial cable lines. A maximum gain of 15.5dBi within the band is obtained when the element separation is properly selected. The uniform spacin...

Millimeter-wave Slotted Waveguide Array Antenna Manufactured by Metal Injection Molding for Automotive Radar Systems

Driving Point Impedance for a Linear Array of Half-width Leaky-wave Antenna (preprint)

Printed leaky-wave antennas offer the potential for a low-profile, wide-bandwidth antenna element that can be arrayed if desired. Microstrip leaky-wave antennas rely on the suppression of the familiar 0 EH mode and the propagation of the radiating 1 EH mode. It is well-known that above a critical frequency, this leaky-wave will propagate with little attenuation and that the phase difference bet...