GENERATING HIGH FIELD INTENSITY FOR VEHICLES IMMUNITY TESTS IN THE HF-VHF RANGE
A. Mariscotti
Abstract:
In this work the problem is presented of generating an electric field in the HF and VHF range (few MHz to a hundred MHz) for immunity tests requiring high field intensity over a large volume of space. The spiral antenna architecture is discussed with respect to a series of parameters that are inter-related and influence field uniformity, beamwidth and overall gain (to be considered in terms of required rated power of the feeding amplifier). Reference is made to selected bibliography, that is not so abundant for our problem, the large part being for GHz range integrated applications. Some design choices have been evaluated by means of simulations, underlying that the tested simulators not always give accurate results: physical size, wire gauge and reflective ground plane effect, among others. The first measurement results match closely simulation results up to 90 MHz, where there is a large discrepancy and then simulation results seem inaccurate and not trustable.
Exploring New Frontiers of Instrumentation and Methods for Electrical and Electronic Measurements
Title:
XVIth IMEKO TC4 International Symposium on Electrical Measurements and Instrumentation (together with 13th IMEKO TC4 Workshop on ADC Modelling and Testing)
