Quasi-frequency-independent, H-plane, log-periodic dipole arraysfor automotive EMC immunity testing applications

摘要

A new, quasi-frequency-independent, H-plane array of log-periodicdipole array (LPDA) antenna has been developed. Because of the reducedH-plane beamwidth, this configuration is shown to be much moreappropriate for immunity testing in the presence of a conducting groundplane, especially for horizontal polarization tests. Also, a new feedconfiguration greatly facilitates high-power operation. A discussion ofH-plane LPDA arrays is presented and details of the design are given.Results of quantitative numerical modeling and experimentalcharacterization of a prototype antenna are given