Embedded Passive Components in Circuit Boards

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Embedded Passive Components in Circuit Boards

• Sponsored
• By
• UNISYS Corp.
• Mentor Jesse Ibaibarriaga
• Ken Reilich

2
Team Members

• Victor Kohr
• Emmanuel Okonta
• Wing Ho Lam
• Roland Pang

3
Agenda

• Gantt Chart
• Simulations
• Cost Comparison
• Demo of the cost software

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Gantt Chart
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Modified Simulations

• Improved Area
• Vias Capacitance and Inductance are Taken into
  Account.
• Embedded Capacitor indeed has NO Traces nor Vias
  Connected to it.
• CMOS Load Replaces the Resistive Load.
• Assumptions
• Simple Driver (AC source)
• Z0 50 ohm for the TMLs

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Cross section of a Via
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Calculation of capacitance and inductance of Via

• C 1.41ErTD1/(D2-D1)pF
• Erelectric permeability of the PCB
• Tthickness of the PCB
• D1diameter via pad, in
• D2diameter of clearance hole, in
• In our case,
• 1.41(4.5f)(50m)(24m)/(36m-24m) 63fF
• L 5.08hIn(4h/d)1nH
• hlength of via, in
• ddiameter of via pad, in
• In our case,
• 5.08(50m)ln(4(50m)/(36m)1) 689pH

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Discrete Capacitor (Modified)
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Impedance of Discrete Capacitor
Impedance (ohm)
Resonant _at_ 274MHz
Frequency (Hz) )
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Embedded Capacitor (Modified)
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Impedance of Embedded Capacitor
Impedance (ohm)
Resonant _at_ 2.3 GHz
Frequency (Hz)
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Discrete Resistor (Modified)
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Simulation Results
Gain in DB
Cutoff_at_490Mhz
Frequency (Hz)
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Difficulty Of Searching Information On Prices

• Technical and marketing department are separated
  
• Confidential information
• Product are too new that they do not have price
  yet
• Miscommunication

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Integrated Circuit Price List
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Information On Price And Performance Of Embedded
Capacitor