Report on the 25th meeting of the GT-RF March 2019 M.Zeier March - - PowerPoint PPT Presentation

report on the 25th meeting of the gt rf
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Report on the 25th meeting of the GT-RF March 2019 M.Zeier March - - PowerPoint PPT Presentation

CCEM/19-05 Report on the 25th meeting of the GT-RF March 2019 M.Zeier March 2019 CCEM Meeting, BIPM, Paris 1 Meeting No informal meeting at last CPEM Meeting on Tuesday afternoon: 35 attendees March 2019 CCEM Meeting, BIPM, Paris


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Report on the 25th meeting of the GT-RF

March 2019 M.Zeier

March 2019 CCEM Meeting, BIPM, Paris 1

CCEM/19-05

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SLIDE 2

Meeting

  • No informal meeting at last CPEM
  • Meeting on Tuesday afternoon: 35 attendees

March 2019 CCEM Meeting, BIPM, Paris 2

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SLIDE 3

Completed Comparisons

None

March 2019 CCEM Meeting, BIPM, Paris 3

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Comparisons in progress 1/3

  • CCEM.RF-K5c.CL: S-parameter PC-3.5 mm

(NMIJ)

– Measurements in progress since 2012! – Severe delays, partly due to shipping – Insufficient communication of pilot – Draft A in progress – 5 laboratories have withdrawn  Discussion on consequences  Affected laboratories need to take action

March 2019 CCEM Meeting, BIPM, Paris 4

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Comparisons in progress 2/3

  • CCEM.RF-K26: Attenuation in PC-2.4 mm, up

to 40 GHz and 90dB (NMIJ)

– Measurements 2015 - 2018 – Draft A expected in May 2019

March 2019 CCEM Meeting, BIPM, Paris 5

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Comparisons in progress 3/3

  • APMP.EM.RF-K8.CL: Power Type-N 10 MHz – 18

GHz (NMIJ)

– Draft A almost completed – Next step: check by supporting institutes

  • Pilot Study: EM properties of materials (NMIJ)

– 4 out of 5 participants have completed measurements – Last data set expected in April

March 2019 CCEM Meeting, BIPM, Paris 6

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SLIDE 7

Supplementary comparison

APMP.EM.RF-S21.F Loop antennas 9 kHz to 30 MHz (NMIJ pilot)

  • Final report approved and published in

metrologia Gulfmet.EM.RF-S2 Calibration factor in power up to 18 GHz (UME)

  • Draft B currently circulating within GT-RF for

final approval

March 2019 CCEM Meeting, BIPM, Paris 7

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New comparisons 1/2

  • Power in WR15 (NIM)

–Interest by LNE, NIST, PTB, NPL and VNIIFTRI –Technical protocol exists but might need modification –Diskussion about stability and suitability of travelling standard  Participants will agree by email on best course of action

March 2019 CCEM Meeting, BIPM, Paris 8

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New comparisons 2/2

  • Antenna comparison (gain and secondary

parameters)

– Interest by NPL, NIST, KRISS, NPL, PTB, NIM, METAS, UME – Exact scope needs to be defined – Pilot needs to be found  NIST will coordinate further discussions by email

March 2019 CCEM Meeting, BIPM, Paris 9

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Ideas for new comparisons 1/4

  • Next S-parameter comparison

(after K5c has finished)

– Proposed scope: 2.4 mm coaxial line (up to 50 GHz) – Interest from NMC, UME, NIST, NPL, NIM, LNE, VSL, SNIM, PTB – METAS willing to pilot star-type comparison – Discussion on principle, pros and cons of star-type comparisons

 METAS to move this forward by email

March 2019 CCEM Meeting, BIPM, Paris 10

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Ideas for new comparisons 2/4

  • Field strength (ev. < 1GHz)

– Interest from NPL, METAS, UME, PTB, NIM, LNE, KRISS – Scope to be defined

 NPL will collate views of participants regarding parameters and pilot by email

March 2019 CCEM Meeting, BIPM, Paris 11

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Ideas for new comparisons 3/4

  • Noise

– Interest from METAS, VNIIFTRI, NIST, NIM, UME, KRISS – Scope unclear

 GT-RF members will provide feedback on preferred scope by email to chair

March 2019 CCEM Meeting, BIPM, Paris 12

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Ideas for new comparisons 4/4

  • Voltage waveform

– NIST, KRISS, PTB and NIM are currently carrying

  • ut an informal comparison.

– A formal comparison might follow – VNIFTRII interested to join

March 2019 CCEM Meeting, BIPM, Paris 13

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SLIDE 14

KCDB 2.0/CMCs

  • Presentation on KCDB 2.0 (S. Picard)
  • Suggestion for new CMC sub-sub categories by

METAS  mixed initial view by attendees  feedback to GT-RF chair by end of June

  • Follow-up of discussion on harmonization of S-

parameter CMC entries (M. Zeier)  agreed that k=2 should be adopted  labs with k=2.45 should adopt

March 2019 CCEM Meeting, BIPM, Paris 14

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Other business

  • EURAMET VNA Guide cg-12 «Guidelines on

the Evaluation of Vector Network Analysers (VNA)» published in 2018

March 2019 CCEM Meeting, BIPM, Paris 15

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Next meeting

  • Next meeting at BIPM in 2 years
  • Inofficial meeting at CPEM2020 (Boulder)

provisionally agreed

March 2019 CCEM Meeting, BIPM, Paris 16