Andy Hughes of AWR

This presentation discusses the effects, in phased array antennas, of internal coupling between antenna elements on their driver PAs (Power Amplifiers), and the attendant circuit and system design challenges that arise. As a result of this coupling, each antenna element’s PA “sees” a changing load impedance as the antenna scans its beam (though adjustment of input power and phasing at each PA input). Models of amplifiers that account for load pull can predict this effect on the overall antenna gain and radiation pattern. Accounting for this PA load sensitivity in design yields more accurate prediction of overall system performance.

Biography:

 is a Field Applications Engineer with NI, AWR Group. He works with current and potential customers to provide guidance and assistance with NI/AWR's EDA software in modelling their advanced Microwave & RF circuit and system designs. The role requires in-depth understanding of passive and active circuits, design flows, and the capabilities of linear, nonlinear, EM simulation, and system simulation tools. Through 30 years working in many disciplines of RF & Microwave design, plus programming experience, Andy has considerable understanding of product development, the techniques used in RF/microwave design, and how to best exploit EDA software to produce accurate simulations and reduce re-work and time to market. Andy received his Bachelor of Science degree in Electronic Engineering from University of Leeds in 1984. He has held various engineering and engineering manager roles including Marconi and Cobham Tactical Communications & Surveillance, before joining AWR in 2013.

Address:Solutions Architect, , United States