rfconnext high speed flex 20 ghz measured data

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

408-981-3700September 24, 2009www.rfconnext.com

Notes

• All Measured Data includes the two SMA connectors, unless otherwise stated

• The Performance of the Flex Cables Seem to be limited by the Connectorsto be limited by the Connectors

• It is estimated that these PMTL™uFlexoperate to 26.5GHz

6/7/2008Copyright 2008 RFCONNEXT, Inc. Propriatry, Confidential, Patents Pending

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Outline• Single Ended Flex

– Insertion Loss/Return Loss– FEXT,NEXT Crosstalk– TDR Impedance Profiles

• Differential Pairs• Differential Pairs– Insertion Loss/Return Loss– TDR Impedance Profiles

• Eye Diagrams• Observations

6/7/2008Copyright 2008 RFCONNEXT, Inc. Propriatry, Confidential, Patents Pending

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6” High Speed PMLT™ uFlexWith SMA Connectors

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Single Ended

The PMTL™ uFlex is 6” longThe Microstrip Flex is 5” Long

6/7/2008Copyright 2008 RFCONNEXT, Inc. Propriatry, Confidential, Patents Pending

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Insertion Loss PMTL™ uFlex vs. Microstrip Flex

6”PMTL™ uFlex

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5” Microstrip Flex

Return Loss, Includes SMA’s

5” Microstrip Flex

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6”PMTL™ uFlex A

6”PMTL™ uFlex B

NEXT-Near End Crosstalk

5” Microstrip Flex

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6”PMTL™ uFlex A

6”PMTL™ uFlex B

FEXT-Far End Crosstalk

5” Microstrip Flex

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6”PMTL™ uFlex A

6”PMTL™ uFlex B

36ps, Rise Time -TDR-Impedance Profile

5” Microstrip Flex, Showing

connectors at ends

6”PMTL™ uFlex A

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6”PMTL™ uFlex B

Differential Pairs

The PMTL™ uFlex is 6” longThe Microstrip Flex is 5” Long

6/7/2008Copyright 2008 RFCONNEXT, Inc. Propriatry, Confidential, Patents Pending

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Insertion Loss PMTL™ Flex vs. Microstrip Flex

6”PMTL™ uFlex

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5” Microstrip Flex

Return Loss, Includes SMA’s

5” Microstrip Flex

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6”PMTL™ uFlex A

6”PMTL™ uFlex B

36ps, Rise Time -TDR-Impedance Profile

5” Microstrip Flex, Showing

connectors at ends 6”PMTL™ uFlex A

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6”PMTL™ uFlex B

Measured Eye Diagrams for the 6” PMTL™ uFlexthe 6” PMTL™ uFlex

10, 14, 22.5,28,32, and 40GHz

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Eye Diagrams for 6” PMTL™ uFlexat 10GHz and 14GHz

PMTL™ uFlexRef. TP1 10

GH

z

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10G

Hz

14 G

Hz

Eye Diagrams for 6” PMTL™ uFlexat 22.5GHz and 28GHz

PMTL™ uFlexRef. TP1 22

.5G

Hz

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22.5

GH

z28

GH

z

Eye Diagrams for 6” PMTL™ uFlexat 32GHz and 40GHz

32 G

Hz

PMTL™ uFlexRef. TP1

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32 G

Hz

40 G

Hz

High Speed Ribbon Cables and Connectors are Next…

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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 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

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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

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