Untilted Narrow-Wall Slots Excited by Parasitic Dipoles in Groove Gap Waveguide Technology

An Ultralow Cross-Polarization Slot Array Antenna in Narrow Wall of Angled Ridge Waveguide

A low cross-polarization slot array antenna in the narrow wall of ridge waveguide is presented. A non-angled slot which is created in the narrow wall of the ridge waveguide is considered to be used as radiating resonant slot. The normalized resistance and normalized reactance curves are presented for design purposes. A six element slot array waveguide antenna with ridges on its narrow wall is t...

Semiconductor waveguide inversion in disordered narrow band-gap materials

It has been previously demonstrated that it is possible to form the NOT gate in a coupled semiconductor waveguide structure in III–V materials. However, to this point, investigations have assumed the materials to be perfect. In this article, we present results of a semiconductor waveguide inverter in GaAs and InAs with disordered material effects included in the simulation. The behavior of the ...

Groove Gap Waveguide (GGW) H-plane Horn ‎Antenna and a Method for Its Back lobe ‎Suppression

recently a new structure called groove gap waveguide (GGW) is ‎introduced to implement low loss microwave component devices ‎especially for millimeter wave applications. This paper presents a ‎new type of H-plane horn antenna making use of this new technology ‎in which backward radiation is significantly suppressed by ‎introducing a high impedance surface at the antenna aperture. The ‎high impe...

Development of A Compact and Low Profile ‎Cavity Backed Slot Antenna Using Microstrip ‎Gap Waveguide Technology

Proof of concept of a cavity backed slot antenna based on inverted microstrip gap ‎waveguide (IMGW) technology is presented. Since the antenna is operating based on the ‎first resonating mode of the cavity, it is more compact compared to the ordinary cavity ‎backed slot antennas in which the second cavity mode is used for radiation. Furthermore, ‎the proposed antenna element introduces lower lo...

Discrete Finite-Length Wall Slots