Amplifying a Digital Signal

Amplifying a Digital Signal

Method of Amplifying a Digital Signal and Device Therefor

This technology enables all-digital power amplification suited for small, battery- operated devices. Utilizing a sleep mode for the switching amplifier prolongs the battery life and increases efficiency in power usage. Reduced electromagnetic interference (EMI), which can degrade performance in surrounding elements, allows the amplifier to be employed without additional shielding. Both of these qualities make the system easier to conceal and reduce the cost of production.

 

Abstract: 

Click to view PDFs of these patents on the US Patent and Trademark Office website: Patent 7,400,194

applications: 
  • MP3 players
  • Hearing aids
Patent Number: 
7,400,194
Patent Issue Date: 
July 15, 2008
Email: 
tech_transfer@nsa.gov
Lab Representatives
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