Revision of the Antenna Measurement Standard IEEE Std 149

IEEE Standard 149, Standard Test Procedures for Antennas, was last revised in 1979 [1]. Over the years, the standard was reaffirmed without any change and its validity for antenna measurements was re-established without a proper revision to account for state-of-the-art facilities and measurement practices. To initiate the revision of this standard, a project authorization request (PAR) was approved by the IEEE Standards Association and a working group (WG) was formed. After several years revising and updating different clauses, the revision tasking is nearing completion. In this paper, we describe and comment on the changes to the document.