Hat Feed Antenna Capable of Sum and Difference Pattern Synthesis

TL;DR

This paper introduces a hat feed antenna design that can generate sum and difference radiation patterns by independently exciting two signals with controlled phase and amplitude, enhancing antenna pattern synthesis capabilities.

Contribution

It presents a novel antenna configuration using a longitudinal septum in a circular waveguide to achieve simultaneous sum and difference pattern synthesis.

Findings

Successful implementation of the hat feed antenna with independent excitation

Generation of in-phase and out-of-phase patterns for sum and difference modes

Enhanced control over antenna radiation patterns

Abstract

Potentially Separate waves could propagate independently with arbitrary amplitude and phase, if one longitudinal septum is inserted in the H-Plane of the circular waveguide. The presented paper has implemented this idea in order to excite hat feed antenna simultaneously with two in-phase and out of phase signals and leads to sum and difference patterns.