spectrum integrity overview 2013
DESCRIPTION
TRANSCRIPT
Spectrum Integrity, Inc. Advanced Interconnect Solutions
Overview and Introduction
Printed Circuit Design
January 2013
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Overview
Who we are:
• An experienced team of Engineers providing custom solutions for Interconnect Applications from DC to 110GHz and beyond
• Our specialty is with High-Speed Digital, RF, and Millimeter-Wave signals
• Our main focus is in Circuit Design, PCB Design, Product Development, and Test
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Design Capabilities
• Transmission Line Analysis and Design
• High Power RF and design for extreme environments
• Thermal Management
• 3D EM Modeling and Simulation
• Chip-on-board
• PCB Material Selection and Stackup Design
• RF Connector Transition Optimization and Design
• Burn-in and HTOL design. Both static and dynamic RF and High-Speed
• Re-engineering of existing designs to improve Signal Integrity and to make more manufacturable
• Component Engineering
• Microwave Circuit Design: Filters, Couplers, Dividers, LNAs, etc.
• Flex Circuit Design
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PCBs for Ultra High-Speed Applications (40Gbps to 100Gbps and beyond)
Transmission Line Design and Optimization – we have many proven designs “cataloged” for re-use. Full EM field solvers are utilized for the most demanding applications.
Spurious modes detected in CPW
S21= -0.28 dB @ 40 GHz
CPW performance after suppression of spurious modes
Optimized CPW for a multilayer PCB
0.00 2.00 4.00 6.00 8.00 10.00Distance [mm]
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Ansoft LLC HFSSDesign1XY Plot 3
m2
m1
Curve Info
ComplexMag_ESetup1 : LastAdaptiveFreq='20GHz' Phase='0deg'
Name X Y
m1 1.0000 3.4812
m2 3.0000 44.2367
Ultra high-speed Diff Pair
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RF Connector Transition Design (an often overlooked feature by many)
Careful attention is given to ensure signals efficiently “launch” onto and off of planar structures. We have developed numerous designs that have proven performance.
A particular area of expertise is with Transition Design for Multilayer PCBs
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Example of connector optimization
S11= -13.5 dB @ 28 GHz (max)
S21= -0.67 dB @ 40 GHz
Before Optimization
S11= -21 dB @ 28 GHz
S11= -19 dB @ 40 GHz (max)
S21= -0.58 dB @ 40 GHz
After Optimization
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Advanced Routing Capabilities
We have developed numerous custom techniques that allow automated advanced routing for arbitrary geometries, such as tapered arcs, with full net intelligence, for optimum performance.
Photo at left shows 1.5 mil (38um) lines tapering smoothly to wider lines and filled micro vias.
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Chip-on-board
System model of components, transmission lines and wire bonds
Overall loss S11, S22, S33, (dB)
We have completed many successful chip-on-board designs from 10GHz up to 50GHz and can make extensive use of modeling and simulation if needed.
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Dynamic Burn-in for at-speed HTOL Design and development of dynamic burn-in boards is an area of particular expertise. We have produced successful HTOL designs for up to 50GHz in a 150C environment for 8,000 hours.
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CAD Screenshots of PCB Examples
40GHz Characterization PCBs (12 to 16 layers) 50GHz Chip-on-board PCB (14 layers and 9 cavities for bare die)
28GHz Mixed-Signal PCB 10
CAD Screenshots of PCB Examples
High Density design example. This PCB is 2.5” x 1.8”, 14 layers, 758 components, 10Gbps signals
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Samples of Completed PCB Designs
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Samples of Completed PCB Designs
Example designs with die cavities. Capable of +/- 1mil depth tolerance (photos from scrap boards)
Multichip Module (MCM) Designs
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Eye diagram measured at 36GHz of an output signal path of a chip-on-board PCB. The path included wire bonds, transmission line, and an optimized transition for the RF connector. This particular PCB was for a 28GHz application but was measured at 36GHz to demonstrate margin of the design.
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Sample Test Data From SI Designs
Sample Test Data From SI Designs
TDR plot of a transmission path of an RF Test Board
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Sample Test Data From SI Designs
Before and after test results showing Insertion Loss improvement with a replacement design done by Spectrum. (Horizontal axis in GHz)
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Sample Test Data From SI Designs
Return Loss measurement of a Through-Line using optimized connector transitions. (Horizontal axis in GHz)
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Sample Test Data From SI Designs
Return Loss of a 5GHz RF Power Amplifier PCB
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Industry Recognition
http://www.microwavejournal.com/blogs/1-rog-blog/post/17921-celebrating-rog-award-contest-winners-at-ims-2012
Spectrum named winner, at recent IMS show in Montreal, for Best Digital Application from Rogers Corporation design contest. Our design entry was for a 100Gbps application.
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Thank You
For Sales: Robert Blomquist (805) 426-4267 [email protected] For Engineering: Michael Ingham (619) 755-7869 [email protected] http://www.spectrumintegrity.com/
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