Directional modulation (DM) has emerged as a highly promising physical layer security technique that embeds confidential information into the spatial characteristics of the transmitted signal. By ...

No audio available for this content. The HawkEye 360 constellation detects and geolocates RF signals for maritime situational awareness, emergency response, national security and spectrum analysis ...

RF signals historically are measured using spectrum analyzers, at least that was before oscilloscopes offered sufficient bandwidth for those measurements. With oscilloscope bandwidths over 100 GHz, RF ...

Curtiss-Wright’s E-SOQPSK (Extensible SOQPSK) is a software-configurable, ultra-low-power Wi-Fi modulation scheme. Its waveforms offer some beneficial performance attributes for aeronautical telemetry ...

As the number of higher-throughput applications grows, so does the need for a wider bandwidth and network coverage in wireless systems. Given limited spectrum allocation, wireless communication ...

Researchers have developed a new chip-sized microwave photonic filter to separate communication signals from noise and suppress unwanted interference across the full radio frequency spectrum. The ...

US-based commercial satellite company HawkEye360 is expanding its satellite-based radio frequency (RF) data collection and analytics operations with the launch of its Cluster 3 constellation late last ...

Diverse well describes the myriad digital modulation schemes used in modern voice and data communications. The alphabet soup of terminology extends well beyond the familiar QAM and GMSK fundamentals ...

Interview Scientists and engineers have been taken aback by the amount of radio interference generated by satellite constellations, and many are calling on standards bodies to improve operator ...