Marketing

Marketing information and downloads including company video, company presentation in Powerpoint format, technical papers and company capabilities brochure amongst many others

Company Video — by julianr — last modified Fri 08 December 2006 16:56

Short introductory video describing the company, its skills and specialties & ethos. In addition, our new Model 300 All Weather Antenna Positioner is shown operating.

Company Presentation - PPT format — by julianr — last modified Wed 06 May 2009 11:40

This presentation gives an overview of our history, ethos, microwave engineering specialisation and microwave antennas and antenna positioner expertise.

Company Presentation - PDF Format — by julianr — last modified Wed 06 May 2009 11:31

This company presentation gives an overview of our history, company ethos, capabilities and specialisations. This file is presented in PDF Format.

Company Profile - PDF — by julianr — last modified Wed 06 May 2009 11:39

A short 8 page company profile of Q-par Angus available as a PDF file for download. The profile includes details of our products, customer base, Microwave, Mechanical, Electronics, Research and Consultancy activities and Software Design capabilities.

High Resolution Radar Technology PPT — by julianr — last modified Wed 06 May 2009 10:36

This presentation in Powerpoint format demonstrates the technology behind our new radar for Environmental Applications.

High Resolution Radar Technology PDF — by julianr — last modified Wed 06 May 2009 10:36

This presentation in PDF format demonstrates the technology and application to major Environment Issues

Millimetric Wave Radars in Defence Presentation - PPT File — by Dr Duncan Wynn — last modified Wed 06 May 2009 15:35

Presentation made by Dr Duncan Wynn, Q-par Angus at the SMI 2006 Radar Conference on 'The role of active millimetre wave radar in defence surveillance'. This file is presented as a Powerpoint format file. Presentation also available as a PDF file.

Millimetric Wave Radars in Defence Surveillance Presentation PDF — by julianr — last modified Wed 06 May 2009 15:38

Presentation made by Dr Duncan Wynn, Q-par Angus at the SMI 2006 Radar Conference on 'The role of active millimetre wave radar in defence surveillance'. This file is presented as a PDF file. Presentation also available as a PPT Powerpoint file.

Wideband Antennas - an Historical Perspective — by Dr Richard Holliday — last modified Wed 06 May 2009 12:32

Presented at IEE Symposium in September 2005, this paper looks at the evolution of wideband antennas and uses modern day techniques to examine performance of early antennas. There are two files, the article and poster presentation. This is the main article.

Wideband Antennas - an Historical Perspective, Poster Presentation — by julianr — last modified Wed 06 May 2009 12:29

Presented at IEE Symposium in September 2005, this paper looks at the evolution of wideband antennas and uses modern day techniques to examine performance of early antennas. There are two files, the article and poster presentation. This is the poster presentation.

A Lightweight, Ultra Wideband Polarimetric W-band Radar - Paper Presented at the European Microwave Conference 2006 — by Dr. Duncan Wynn — last modified Wed 06 May 2009 12:47

Abstract - A lightweight, ultra wideband (UWB), polarimetric millimetre wave 94 GHz radar with high resolution is described for environmental and other short range applications. UWB and random signal W-band radar technologies are combined with polarimetric and super-resolution processing techniques to provide a compact remote sensing capability that is manportable. An all-weather capability is provided for accurate and high resolution measurement of the physical size, relative distance, bearing, altitude, direction, velocity and classification of stationary and moving objects at ranges of less than 10 km. Attributed information relating to the sensed environment such as local surface features, water depth, terrain topology and object classification is derived from remote millimetre wave radar measurements including polarisation.

A Lightweight, Ultra-Wideband Polarimetric W-band Radar - Presentation — by Dr Duncan Wynn — last modified Fri 08 May 2009 18:11

A lightweight, ultra-wideband polarimetric W-band radar with high resolution for environmental applications. This presentation was made at the EuRAD Conference in Manchester on September 14th 2006 as part of the European Microwave Week 2006. The Presentation is available as a MS Powerpoint File. The paper that the presentation is based on, is also available.

X-Band RF Structure and Beam Dynamics Workshop : Poster — by julianr — last modified Fri 14 November 2008 10:59

Download the workshop poster.

UWB Passive Microwave Imagery from Static Discharge Effects — by julianr — last modified Wed 06 May 2009 16:07

Paper published in the IEE Electronics Letters, Vol 40, No. 18, 2nd Sept. 2004 by Dr Andrew Mackay of Q-par Angus Ltd.

Dispersion requirements of low-loss negative refractive indexmaterials and their impossibility in the homogeneous limit — by Dr Andrew Mackay — last modified Thu 07 May 2009 13:58

Article submitted to IET Microwaves, Antennas and Propagation: "A necessary dispersion requirement is given for the effective relative permeability, μr (ω) and permittivity ǫr (ω) as a function of frequency for lossy homogeneous dispersive materials and negative refractive index materials in particular, if they exist at some dimensional scale D. The requirements are valid both for isotropic and uniaxial materials, the latter defined by material properties that are invariant under a rotation about a principal axis. Using asymptotic requirements at zero frequency and Foster’s reactance theorem, the general band-gap structure is given for low-loss materials. It is shown that such materials can only be achieved if the material exhibits finite band-gaps separating regions of positive and/or negative refractive index regions. In degenerate cases the band gaps shrink to zero but low-loss propagation remains impossible in the neighbourhood of the critical frequencies. The effect of small losses are considered, and compared with Stockman’s criterion. Losses may be arbitrarily small within a band provided there are no bounds to the size of the real parts of the relative permittivity and permeability at the band edges. A numerical example is given showing the effect of small losses.

Bandwidth performance limits for finite antennas — by Dr Andrew Mackay — last modified Fri 08 May 2009 11:53

Article submitted to IET Microwaves, Antennas and Propagation. "Maximum bandwidth performance bounds are given for any finite antenna, either in free space or above a perfectly conducting ground plane. The theory is valid for any class of antenna, e.g. for patch antennas, dielectric resonator antennas, etc. whose radiating currents can be confined to the Chu sphere or hemisphere of radius a. An example is given using the equivalentcircuit of a perfect loop antenna and a full-wave numerical analysis of a realisable loop antenna."

Q-par Angus works with EADS Astrium for the PARIS Project — by Janette Morgan — last modified Fri 08 May 2009 14:28

Q-par Angus Ltd has been working with EADS Astrium to produce an Airborne Demonstrator, L-band dual-band steerable phased array, for the PARIS concept which will de-risk the development for a potential space borne instrument.

UWB Passive Microwave Imagery from Static Discharge Effects — by Andrew Mackay — last modified Fri 08 May 2009 16:55

Paper published in the IEE Electronics Letters, Vol 40, No. 18, 2nd Sept. 2004 by Dr Andrew Mackay of Q-par Angus Ltd.

The Theory and Design of Provably Optimal Bandwidth Radar Absorbent Materials (RAM) using Dispersive structures and/or Frequency Selective Surfaces (FSS) — by Andrew Mackay — last modified Fri 08 May 2009 17:00

Published in the Proceedings of the 2007 International Conference on Electromagnetics in Advanced Applications (ICEAA07), September 2007. This article concerns the design of radar absorbent materials which are theoretically optimal in the sense of maximum reflection loss for a material of given bandwidth and thickness. It covers the theory, definition of benchmarks and design methodology.

Q-par Wins Contract Helping To Build Revolutionary Particle Accelerator - Press Release — by julianr — last modified Tue 26 May 2009 12:32

A PDF version of the Press Release for our work on the Daresbury Laboratory's EMMA project