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#11
July 5th 15, 11:48 PM
posted to rec.radio.amateur.antenna
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An antenna question--43 ft vertical
On Sun, 05 Jul 2015 16:32:49 -0400, Jerry Stuckle
wrote: So why don't manufacturers design transmitters with 1 ohm output impedance, Rick? Hint: Sophomore-level AC Circuits course in virtually any EE degree, and anyone claiming an EE degree should be able to tell why. Actually, there are low output impedance RF power amps. They're quite common in NMR power amps to reduce coupling between stages: Ultra-low output impedance RF power amplifier for parallel excitation http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2663597/ Ultra-low Output Impedance RF Power Amplifier Array http://cds.ismrm.org/ismrm-2007/files/00172.pdf -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
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