Millimeter Wave Measurements - NTMS
Millimeter Wave Measurements - NTMS Millimeter Wave Measurements - NTMS
W5HN WA1MBA 78 GHz LNA#5 with W/G Tuner North Texas NTMS Microwave Society .443” WR-15 .070” Only 2 0-80 screws needed to lower NF from 11.8 dB to 7.7dB ~ 4 dB improvement .140” 2pl on top 3 0-80 tapped holes on top and 2 on bottom, ones on bottom are offset by .070” from top WWW.NTMS.ORG 30
W5HN LNA#5 with Input Tuner – 8/29/2010 North Texas NTMS Microwave Society I don’t believe this is real – most likely subharmonics into multiplier since multiplier is most likely responding to a 1/3 f signal as opposed to the desired ½ f. Compares well to 19 plus dB from noise figure meter WWW.NTMS.ORG 31
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W5HN<br />
LNA#5 with Input Tuner – 8/29/2010<br />
North<br />
Texas<br />
<strong>NTMS</strong><br />
Microwave<br />
Society<br />
I don’t believe<br />
this is real –<br />
most likely<br />
subharmonics<br />
into multiplier<br />
since multiplier<br />
is most likely<br />
responding to a<br />
1/3 f signal as<br />
opposed to the<br />
desired ½ f.<br />
Compares well<br />
to 19 plus dB<br />
from noise<br />
figure meter<br />
WWW.<strong>NTMS</strong>.ORG 31
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