Parametric Artificial Phase Conjugation Media With Automatic Evanescent Wave Amplification Properties

Lead Research Organisation: Queen's University Belfast
Department Name: Sch of Electronics, Elec Eng & Comp Sci

Abstract

We wish to analyze the EM scattering of the field produced by an incident plane wave then by an electric line source suspended above a double periodic infinite wire array with nonlinear inclusions in the presence of a pumping signal. In doing so we permit the possibility for phase conjugation of the transmitted signal as well as concurrent automatic proportional amplification control of the evanescent modes presented to the array. This investigation would permit the possibility of the construction of an ultra-thin lens with perfect or near perfect focusing capability and in refined methods for the creation of self-tracking antenna arrays. In addition the conditions under which the energy normally lost to specular reflection can be converted into energy in the phase conjugated signal, as well as the conditions for energy loss due to grating lobe formation under harmonic pumping conditions will be investigated. The proposed architectures represent a new class of phase conjugating artificial electromagnetic materials with potential for application in advanced microwave and millimeter wave systems.
 
Description This project allowed a number of significant breakthroughs in the area of active nonlinear artifical electromagnetic surfaces which are capable of providing phase conjugation. Major advances in the underpinning theory design and experimental characterisation of these structures lead to very innovative and novel structures for subwavelength imagaing into the near and far field.
Exploitation Route The work lead to several technical solutions in the imaging domain, medical, security where increased resolution and resilience to loss are important. The work can be used to construct advanced imaging solutions .
Sectors Aerospace, Defence and Marine,Electronics
URL http://www.ecit.qub.ac.uk
 
Title OBJECT IDENTIFICATION SYSTEM AND METHOD 
Description An identification system and method of use thereof is provided, the system (1) comprising at least one transceiver cell (3) comprising an antenna component (7) which receives a part of an incoming signal (11) from an object (13), and a processor which processes the part of the incoming signal to extract identification information of the object, wherein the processor comprises a frequency downconverter/mixer unit comprising a coupler which produces first and second phase quadrature signals, a first mixer which receives the first signal and mixes it with the part of the incoming signal to produce a first output signal comprising object identification information, and a second mixer which receives the second signal and mixes it with the part of the incoming signal to produce a second output signal comprising object identification information, a phase shifter which receives the second output signal and adds a 90 degree phase shift to the signal to produce a phase shifted second output signal comprising the object identification information, a sideband signal filter which receives the first output signal from the frequency downconverter/mixer unit and receives the phase shifted second output signal from the phase shifter, and operates to produce a sideband signal of the part of the incoming signal which comprises the object identification information, and an object identification component which receives the sideband signal from the sideband signal filter, extracts the object identification information therefrom, and uses the object identification information to identify the object. 
IP Reference WO2009156762 
Protection Patent application published
Year Protection Granted 2009
Licensed No
Impact new method for tracking objects
 
Description Engagement with Industry 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact discussion afterwards

new contacts in industry
Year(s) Of Engagement Activity Pre-2006,2006,2007,2008,2009,2010,2011,2012,2013,2014