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Technical Topics => The RF Workbench => Topic started by: ChrisSmolinski on January 25, 2014, 0115 UTC

Title: High Efficiency Power Amplifier Based on Envelope Elimination and Restoration
Post by: ChrisSmolinski on January 25, 2014, 0115 UTC

Not sure if anyone has seen this before:

High Efficiency Power Amplifier Based on Envelope Elimination and Restoration Technique
http://oa.upm.es/7900/2/INVE_MEM_2010_79469.pdf (http://oa.upm.es/7900/2/INVE_MEM_2010_79469.pdf)

Based on Kahn's envelope elimination and restoration.

Title: Re: High Efficiency Power Amplifier Based on Envelope Elimination and Restoration
Post by: cmradio on January 25, 2014, 0319 UTC

We farted around with that in the 80's. May be efficient, but sure not cheaper! Best for retrofitting existing broadcast TX.

Peace!

Title: Re: High Efficiency Power Amplifier Based on Envelope Elimination and Restoration
Post by: redhat on January 26, 2014, 2353 UTC

The Kahn method is how high power shortwave transmitters generate SSB with good efficiency.  I imagine this paper was targeting cell phone PA's to extend battery life.

+-RH