In addition, they provide enhanced frequency agility
, lowering the probability of detection and intercept while ensuring link security, situational awareness, and spectrum efficiency.
The frequency agility
of SCRN-220 provides investment protection to mobile operators if they ever need to change the spectrum being used for enterprise LTE small cell networks.
Zhou, "Frequency agility
in a ZigBee network for smart grid application," Innov.
The Department of the Navy is investing in new technologies and developing updated policies that will facilitate maximized spectrum efficiency, including improving the ability to coexist with other systems in the same band, and increasing radio frequency agility
The new wireless RF AMI network will leverage best-in-class signal range and unparalleled frequency agility
to serve as a powerful platform to support advanced functionality including remote meter disconnects, pro-active outage notification and prepay metering.
AESA radar offers greater frequency agility
than conventional radar systems, including Passive Electronically Scanned Arrays (PESA), which delivers unpredictable scan patterns that are difficult to detect by radar warning receivers (RWRs), particularly older systems.
Among other interesting features is the uPoint Robot Radio, which, said the company, leverages frequency agility
-- the ability to automatically switch away from congested frequencies -- power management, and mesh networking to form a robust network in which robots, operators, and observers work seamlessly together.
Consequently, the experimental characterization of an antenna with many switches will be a difficult task to be realized, which may explain for example the use of strips in  instead of the three PIN diodes required to achieve the frequency agility
of a dual band-notched slot antenna.
Hayes, "Microstrip antennas with frequency agility
and polarization diversity," IEEE Trans.
is typically provided by scaling the antenna dimensions physically or electrically.