Figure 2.
Frequency spectra of the raw radiofrequency (RF) signal (green) and the GH2 (red) and GH8 (blue) filters.
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.