Robin Granger - Guest Speaker

LAPC 2013 is please to welcome Robin Granger as a guest speaker. Rob is a Senior Consultant Engineer in the Electromagnetic Engineering and RFICs group at Roke Manor Research Ltd, specialising in antennas, electromagnetics, RF, EMC and signal integrity.  The details of his talk are:

 

Title:

Modelling RF Losses in Touchscreens using ANSYS HFSS

 

Abstract:

Touch-sensitive displays (touchscreens) are commonly incorporated into today's hand-held wireless products because they offer increased screen area and a more natural interface over mechanical buttons. The touch-sensing element itself often consists of layers of flexible plastic or glass coated with films of Indium-Tin Oxide (ITO) which is both electrically conductive and highly optically transparent. During the development of a wireless product containing such a display, it was discovered that the presence of ITO films caused substantial RF losses which degraded wireless performance. In this paper we describe the effects observed, explain the mechanism for this loss, demonstrate a technique for modelling the effects using ANSYS HFSS and describe the chosen solution.