Dispersion Engineered Radiative & Guided-Wave Electromagnetic Structures for Efficient Wave Control

It appears your Web browser is not configured to display PDF files. Download adobe Acrobat or click here to download the PDF file.

Click here to download the PDF file.


Emara, Mohamed Karam Abdelmaboud




This thesis presents two novel dispersion engineered structures for controlling the propagation properties of EM waves. The first structure is a low-profile dielectric choke ring for multipath mitigation for GNSS applications. The proposed structure has a dual-band surface impedance resonance around the GNSS bands of L2 and L1. An in-house choke ring prototype of the proposed design was tested with the DM antenna. A high multipath rejection in both GNSS bands is experimentally confirmed with comparable performances to an otherwise bulky, heavy, and expensive conventional metallic choke ring. The second structure is an amplitude-equalized group delay device, called a phaser, for ASP applications, implemented at microwave and mm-wave frequencies. The proposed devices achieve a flat magnitude transmission while preserving their strong dispersive delay response. Both types of phasers are demonstrated using full wave simulations, with experimental demonstration currently underway for the active configurations.


Engineering - Electronics and Electrical




Carleton University

Thesis Degree Name: 

Master of Applied Science: 

Thesis Degree Level: 


Thesis Degree Discipline: 

Engineering, Electrical and Computer

Parent Collection: 

Theses and Dissertations

Items in CURVE are protected by copyright, with all rights reserved, unless otherwise indicated. They are made available with permission from the author(s).