A Design Procedure for a Slotted Waveguide With Probe - Fed Slots Radiating into Plasma

Broadband Cpw Fed Slotted Ground Antenna

In this paper, a broadband rectangular microstrip patch antenna fed by coplanar waveguide feed with two slots in the ground plane is proposed. Investigations are carried out using coplanar waveguide feed with slotting in the ground plane to optimize the broadband operation. A sensitivity analysis shows the variation of return loss with different antenna parameters. This design of broadband ante...

Design and Development of High Gain, Low Profile and Circularly Polarized Cavity-backed Slot Antennas Using High-order Modes of Square Shaped Substrtae Integrated Waveguide Resonator

In In this paper, two low profile, single fed cavity backed slot antennas providing a circularly polarized (CP) wave are introduced. One of the antennas presents a right-handed CP (RHCP) wave, while the other one offers a left handed CP (LHCP) wave. The proposed antennas consist of a square shaped Substrtae Integrated Waveguide (SIW) cavity incorporatng two couples of radiating slots to radiate...

Design of a Center-fed Double-Layer Slotted Waveguide Array using Reflection-Canceling Posts for Slots at 61.5GHz

An Alternating-Phase Fed Single-Layer Slotted Waveguide Array with a Sector Shaped Beam for Millimeter-Wave Radar Applications

This paper presents design of an alternating-phase fed single-layer slotted waveguide array for a sector shaped beam in the Eplane radiation pattern. A sector beam pattern is very effective for radar applications for detecting obstacles in a certain angular range without mechanical or electronic scanning. The sector shaped beam with 13 degree beam width is synthesized by a cascade of T-junction...

Wideband Circularly Polarized Square Slot Array Fed by Slotted Waveguide for Satellite Communication

A wideband circularly polarized (CP) slot array with high radiation efficiency is proposed. The cavity-backed square slots are designed to achieve wideband CP radiation with a unidirectional pattern. The slotted waveguide is adopted to feed the array with high efficiency. The square slot, cavity and feeding slot in the waveguide can be viewed as a radiating element. A CP slot array can be conve...