An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Francis, M.
and Hill, D.
(1987),
Out-of-Band Response of Array Antennas, Proc., Antenna Meas. Tech. Asoc. Symp., Seattle, WA
(Accessed December 1, 2023)