A microwave transmission-line network guiding electromagnetic fields through a dense array of metallic objects

TL;DR

This paper demonstrates a microwave transmission-line network that effectively guides electromagnetic waves through dense metallic object arrays, showcasing a feasible approach for cloaking applications with simple manufacturing.

Contribution

It introduces a practical transmission-line network design for microwave cloaking that is easy to manufacture and assemble, advancing the development of electromagnetic cloaking devices.

Findings

Microwave energy can be guided through dense metallic arrays using the network.

The network effectively couples waves into and through metallic object arrays.

The approach is simple to manufacture and assemble.

Abstract

We present measurements of a transmission-line network, designed for cloaking applications in the microwave region. The network is used for channelling microwave energy through an electrically dense array of metal objects, which is basically impenetrable to the impinging electromagnetic radiation. With the designed transmission-line network the waves emitted by a source placed in an air-filled waveguide, are coupled into the network and guided through the array of metallic objects. Our goal is to illustrate the simple manufacturing, assembly, and the general feasibility of these types of cloaking devices.