April 19, 2021
through Carlo Munoz
The United States Defense Advanced Research Projects Agency (DARPA) has officially selected several research teams to lead the agency’s work in developing technologies to extend and improve broadband software defined radio (SDR) capabilities. in the US armed forces.
The teams, comprised of participants from industry and academia, will “explore a diverse set of technological approaches” in the area of broadband radio frequency (RF) interference cancellation for current and future SDR platforms. , as part of Wideband Adaptive RF Protection (WARP), agency officials said in a statement.
“Broadband software-defined radio systems are providing unprecedented access to the RF spectrum and are beginning to proliferate across the [US Department of Defense – DoD] and resulting commercial applications. Unfortunately, as bandwidth increases, dynamic range tends to decrease, which impacts radio sensitivity and performance,” DARPA officials said.
A US Army radio operator-maintainer works on an AN/PRC 1510 high frequency radio at Fort Gordon, Georgia. (The American army )
In an effort to reduce this reduction in dynamic range, while maintaining extended broadband capability for SDRs, WARP program officials are exploring the advanced use of tunable filters and signal cancellers “to manage external interference as well as …to treat self-interference”. , on these radio platforms, explained the officials of the agency.
Specifically, WARP research teams will plan and execute experimental work on intrinsically switched electromagnetic (EM) resonator technologies, as well as multiferroics, acoustics, and photonics to enable tunable RF frequency filtering and signal cancellation capabilities for SDR systems. These technologies would be combined “with new circuit architectures, heterogeneous device integration, and advanced RF conditioning,” which would provide SDR operators with adaptive control of these RF tuning and signal cancellation capabilities, according to the DARPA.
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The United States Defense Advanced Research Projects Agency (DARPA) has officially selected several research…