https://www.electronicdesign.com/technologies/communications/article/21794249/edge-qam-amp-covers-20-db-range
EDGE QAM Amp Covers 20-dB Range | Electronic Design
The RFAM2790 EDGE QAM amplifier employs a GaAs pHEMT die and a GaAs MESFET die.
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https://newsroom.cisco.com/c/r/newsroom/en/us/a/y2007/m06/cisco-unveils-universal-edge-qam-solution.html
Cisco Unveils Universal Edge QAM Solution
Enables Maximum Spectrum Efficiency and Rapid Expansion of Video On-Demand, Switched Digital Video and High-Speed Data Services
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