The Flex Cable using PMTL(tm) outperforms a similar Flex using Microstrip lines. Resutls shown include, Return Loss, Insertion Loss, and TDR, and FEXT, NEXT, and
1. RFCONNEXT:
Comparing High Speed Flex Performance using
PMTL™ and Microstrip up to 20GHz
Single Ended, and Differential, Insertion Loss, Return Loss, FEXT,
NEXT Crosstalk, and TDR impedance Profiles
Advancing the High Speed Interconnect Ecosystem™…
Jamal S. Izadian, Ph.D.
jsi@rfconnext.com
408-981-3700
September 24, 2009
www.rfconnext.com
2. Notes
• All Measured Data includes the two SMA
connectors, unless otherwise stated
• The Performance of the Flex Cables Seem
to be limited by the Connectors
• It is estimated that these PMTL™uFlex
operate to 26.5GHz
Copyright 2008 RFCONNEXT, Inc. Propriatry, 6/7/2008 2
Confidential, Patents Pending
4. 6” High Speed PMLT™ uFlex
With SMA Connectors
Copyright 2008 RFCONNEXT, Inc. Propriatry, 6/7/2008 4
Confidential, Patents Pending
5. Single Ended
The PMTL™ uFlex is 6” long
The Microstrip Flex is 5” Long
Copyright 2008 RFCONNEXT, Inc. Propriatry, 6/7/2008 5
Confidential, Patents Pending
6. Insertion Loss PMTL™ uFlex vs.
Microstrip Flex
6”PMTL™ uFlex
5” Microstrip Flex
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Confidential, Patents Pending
7. Return Loss, Includes SMA’s
5” Microstrip Flex
6”PMTL™ uFlex A
6”PMTL™ uFlex B
Copyright 2008 RFCONNEXT, Inc. Propriatry, 6/7/2008 7
Confidential, Patents Pending
8. NEXT-Near End Crosstalk
5” Microstrip Flex
6”PMTL™ uFlex A
6”PMTL™ uFlex B
Copyright 2008 RFCONNEXT, Inc. Propriatry, 6/7/2008 8
Confidential, Patents Pending
9. FEXT-Far End Crosstalk
5” Microstrip Flex
6”PMTL™ uFlex A
6”PMTL™ uFlex B
Copyright 2008 RFCONNEXT, Inc. Propriatry, 6/7/2008 9
Confidential, Patents Pending
10. 36ps, Rise Time -TDR-
Impedance Profile
5” Microstrip Flex,
Showing 6”PMTL™ uFlex A
connectors at ends
6”PMTL™ uFlex B
Copyright 2008 RFCONNEXT, Inc. Propriatry, 6/7/2008 10
Confidential, Patents Pending
11. Differential Pairs
The PMTL™ uFlex is 6” long
The Microstrip Flex is 5” Long
Copyright 2008 RFCONNEXT, Inc. Propriatry, 6/7/2008 11
Confidential, Patents Pending
12. Insertion Loss PMTL™ Flex vs.
Microstrip Flex
6”PMTL™ uFlex
5” Microstrip Flex
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Confidential, Patents Pending
13. Return Loss, Includes SMA’s
5” Microstrip Flex
6”PMTL™ uFlex A
6”PMTL™ uFlex B
Copyright 2008 RFCONNEXT, Inc. Propriatry, 6/7/2008 13
Confidential, Patents Pending
14. 36ps, Rise Time -TDR-
Impedance Profile
5” Microstrip Flex,
Showing
6”PMTL™ uFlex A
connectors at ends
6”PMTL™ uFlex B
Copyright 2008 RFCONNEXT, Inc. Propriatry, 6/7/2008 14
Confidential, Patents Pending
15. Measured Eye Diagrams for
the 6” PMTL™ uFlex
10, 14, 22.5,28,32, and 40GHz
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Confidential, Patents Pending
16. Eye Diagrams for 6” PMTL™ uFlex
at 10GHz and 14GHz
Ref. TP1 PMTL™ uFlex
10GHz
14 GHz
Copyright 2008-2010 RFCONNEXT, Inc., 6/7/2008 16
Contains Patents Pending Materials
17. Eye Diagrams for 6” PMTL™ uFlex
at 22.5GHz and 28GHz
Ref. TP1 PMTL™ uFlex
22.5GHz
28 GHz
Copyright 2008-2010 RFCONNEXT, Inc., 6/7/2008 17
Contains Patents Pending Materials
18. Eye Diagrams for 6” PMTL™ uFlex
at 32GHz and 40GHz
32 GHz
40 GHz Ref. TP1 PMTL™ uFlex
Copyright 2008-2010 RFCONNEXT, Inc., 6/7/2008 18
Contains Patents Pending Materials
19. High Speed Ribbon Cables and
Connectors are Next…
Copyright 2008 RFCONNEXT, Inc. Propriatry, 6/7/2008 19
Confidential, Patents Pending
20. Observations
• PMTL™uFlex, outperformers MS Flex
• The PMTL™ uFlex is highly scalable
– Can be scaled to micron dimension for space and trace on low end
– Can be scaled to mm, dimension on high end
• Many New interconnects are possible
– High Speed Ribbon Cables, Jumpers, Bus
– High Speed Connectors and Termination
• Can be fabricated using low cost felx, rigid, or Rigid-Flex materials
using traditional PCB processes
• Can be printed in long length, side by side, using new R2R process
• Can be used as alternative to coaxial cables and twisted pairs, at
lower cost, with similar performance, using only 10% of resources
Copyright 2008 RFCONNEXT, Inc. Propriatry, 6/7/2008 20
Confidential, Patents Pending
21. Credits
• Samples were manufactured by Samtec,
Inc., www.samtec.com
• VNA Measurements, Were provided by
Samtec, Inc.
• Eye Measurements were provided by
Spectrum Integrity, Inc.
www.spectrumintegrity.com
• Designed and Developed by
www.rfconnext.com
Copyright 2008 RFCONNEXT, Inc. Propriatry, 6/7/2008 21
Confidential, Patents Pending