WA1MBA MUD 2010 B.pdf - NTMS

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History – How did we get here• Second version – better but still oscillated• Third version – worked but needed lots oftweaking – Reported MUD andMartlesham 2008 on air• Reported MUD 2009 attempt to improveand reproduce• Version 4 – in-line WG ports, tested atMUD 2009 but with questionable noisefigure and gain results
History Version 4• Had trouble with RF board manufacturer, somade up a few units using a prototype boardmilling machine• Made some 6 to 7 dB nf and 15 dB gainmeasurements at home, but questioned ENR• Brought units to MUD but had poorer results• Left a few units with Al W5LUA to developrepeatable and verifiable nf and gainmeasurements
Page 1 and 2: 78 GHz LNA Project StatusReportWA1M
Page 6 and 7: History Version 4• During 2009/20
Page 8 and 9: Poor boards, Long bondsRough board
Page 10 and 11: Good boards, Short bondsSmooth boar
Page 12: Unit 6Gain went from 9.3 dBTo 28.9
Page 15: Repeatability• Continued to repla
Page 18 and 19: Next Steps• We need to have addit
Page 20 and 21: Next Steps• Bodies need slight mo
Page 23 and 24: Outline• History- How did we get
Page 25 and 26: Cost - 78 GHz Amp ProjectPARTSDigik
Page 27: Process of Ordering• Money will h

WA1MBA MUD 2010 B.pdf - NTMS

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