A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2018; you can also visit the original URL.
The file type is application/pdf.
M.W. Nurnberger, J.L. Volakis. "A new planar feed for slot spiral antennas." IEEE Transactions on Antennas and Propagation (1996) 130-131