Presenters

Reuben SharThales Australia, Sydney

Christine Chen, Thales Australia Sydney

 

Abstract

Traditional antenna simulations use active source or sources together with other structures and the solution finds the far or near electromagnetic (EM) field distributions. In some cases, it is useful to perform the inverse operation, which treats the antenna as a passive structure being excited by an external, controlled EM field. In far-field cases, the external controlled EM field used  is a plane wave. This tutorial will demonstrate how this method can be applied using some existing EM simulation tools. Examples will include some common antenna problems, solved for comparison both in the ‘traditional’ method and the stepped external field method. Where time permits, some examples will be done as live simulations.

Tutorial Outcomes

Participants of this tutorial will be able to apply it to their EM problems including:

  1. Multiple Beam Tracking Antenna Arrays
    • Define models and evaluate co and cross-polarization response of mono-pulse Sum and Difference channels.
  2. Direction Finding Arrays
    • Define a Direction Finding (DF) array model
    • Find the amplitude and phase of each array member
    • Apply a common DF algorithm
    • Evaluate the DF performance
  3. Receive Arrays over ground
    • Define a model of an array of vertical receive elements over a ground plane
    • Evaluate the far-field performance for different polarizations and azimuth/elevation angles
  4. Phased Arrays
    • Define a Phased array model
    • calulate steering coefficients
    • Evaluate the far-field performance for different polarizations and azimuth/elevation angles

 About the Presenter

Reuben Shar: EW Systems Engineer at Thales Australia. Worked on integration of naval ESM systems on the FFG Upgrade project, Minehunter Coastal and Anzac Frigates. Other experience includes naval ESM and DF systems, communication systems, early warning airborne radar and air defence radar systems. Authored and presented papers at the 2007 AOC convention, IEEE CSE-08, IWT2009, IWT2011, Australian antenna symposiums of 2005, 2009, 2011 and 2015, WARS2010, AOC2010, SETE2010, ICEAA 2010, AOC 2012, Radar 2013, AOC2014, PPIR2014, and iWat2014.

Author has BScEE from Technion, Haifa, Israel, has served with the IAF (Major ret.) and has been with Thales Australia since 1992. Senior Member of IEEE, Fellow of IEAust (CPEng) and member of AOC. Has 2 patents related to antennas.

Christine Chen: EM/RF Engineer at the Specialty Engineering Group at Thales Australia. Christine has worked on projects in Munitions, Naval, Communications, Telco and Land, including the Land 121 Phase 4 Hawkei project. Christine co-authored and presented papers at the 2015 Australian Symposium for Antennas and the 2014 Progress in Radar Research. Christine has a Bachelor degree in Electrical Engineering from Taiwan and the US, and a Master degree in Electrical Engineering from the University of Sydney, specialising in Antennas and Radio Frequency. 

Resources

Tutorial Slides and Resources for Attendees - ( 811.4 MB )

Note a password is required to open the archive and is only provided to attendees at the tutorial.