Electronics World articles Popular Electronics articles QST articles Radio & TV News articles Radio-Craft articles Radio-Electronics articles Short Wave Craft articles Wireless World articles Google Search of RF Cafe website Sitemap Electronics Equations Mathematics Equations Equations physics Manufacturers & distributors LinkedIn Crosswords Engineering Humor Kirt's Cogitations RF Engineering Quizzes Notable Quotes Calculators Education Engineering Magazine Articles Engineering software RF Cafe Archives Magazine Sponsor RF Cafe Sponsor Links Saturday Evening Post NEETS EW Radar Handbook Microwave Museum About RF Cafe Aegis Power Systems Alliance Test Equipment Centric RF Empower RF ISOTEC Reactel RF Connector Technology San Francisco Circuits Anritsu Amplifier Solutions Anatech Electronics Axiom Test Equipment Conduct RF Copper Mountain Technologies Exodus Advanced Communications Innovative Power Products KR Filters LadyBug Technologies Rigol TotalTemp Technologies Werbel Microwave Windfreak Technologies Wireless Telecom Group Withwave RF Cafe Software Resources Vintage Magazines RF Cafe Software WhoIs entry for RF Cafe.com Thank you for visiting RF Cafe!
Innovative Power Products Passive RF Products - RF Cafe

RF Cascade Workbook 2018 by RF Cafe

Crane Aerospace Electronics Microwave Solutions: Space Qualified Passive Products

Please Support RF Cafe by purchasing my  ridiculously low-priced products, all of which I created.

RF Cascade Workbook for Excel

RF & Electronics Symbols for Visio

RF & Electronics Symbols for Office

RF & Electronics Stencils for Visio

RF Workbench

T-Shirts, Mugs, Cups, Ball Caps, Mouse Pads

These Are Available for Free

Espresso Engineering Workbook™

Smith Chart™ for Excel

TotalTemp Technologies (Thermal Platforms) - RF Cafe

Substrate Noise Coupling in Analog/RF Circuits
RF Cafe Quiz #26

RF Engineering Quizzes - RF CafeAll RF Cafe Quizzes make great fodder for employment interviews for technicians or engineers - particularly those who are fresh out of school or are relatively new to the work world. Come to think of it, they would make equally excellent study material for the same persons who are going to be interviewed for a job. Bonne chance, Viel Glück, がんばろう, buena suerte, удачи, in bocca al lupo, 행운을 빕니다, ádh mór, בהצלחה, lykke til, 祝你好運. Well, you know what I mean: Good luck!

Click here for the complete list of RF Cafe Quizzes.

Note: Some material based on books have quoted passages.

RF Cafe Featured Book - Substrate Noise Coupling in Analog/RF CircuitsThis quiz is based on the information presented in Substrate Noise Coupling in Analog/RF Circuits, by Stephane Bronkers, Geert Van der Plas, Gerd Vandersteen, and Yves Rolain. Published by Artech House.

 Note: Some of these books are available as prizes in the monthly RF Cafe Giveaway.



1.  Which is NOT a class of substrate noise analysis?

a)  Generation

b)  Propagation

c)  Impact

d)  Transverse



2.  What is the most popular and straightforward method for shielding analog integrated circuits

      against substrate noise?

a)  Ground plane

b)  Guard rings

c)  Copper conductors

d)  Metal shields



3. Aggressor and victim refer to what process?

a)  The design process and engineer doing the design, respectively

b)  The source of and recipient of substrate noise, respectively

c)  Hole and electron conduction, respectively

d)  Conductor and insulator substrate noise, respectively



4.  What is the best way to separate substrate coupling noise from other regional noise coupling

     sources when developing mixed (digital/analog) signal devices?

a)  Dice between the regions to physically separate the digital/analog regions, then wire bond between

b)  Process a neutral region between digital / analog regions, then wire bond between

c)  Process a solid vertical metal wall between digital/analog regions, then wire bond between

d)  There is no method for totally separating substrate noise between regions



5.  At high frequencies, which off-chip noise coupling mechanism typically dominates?

a)  Capacitive coupling between PCB traces

b)  Inductive coupling between PCB traces

c)  Resistive coupling between the PCB and the die

d)  Magnetic coupling between die bond wires



6.  What is the primary source of FM modulated noise spurs?

a)  Doping impurities

b)  Heavy p-type doping

c)  Perturbations on the ground interconnect

d)  Low resistivity passivation



7.  In a VCO circuit, what is a likely mechanism for AM spur generation and intermediate frequencies?

a)  Capacitive coupling from on-chip inductors to the substrate

b)  Inductive coupling from on-chip inductors to the substrate

c)  Magnetic coupling from on-chip inductors to the substrate

d)  Resistive coupling from on-chip inductors to the substrate



8.  How are digital and analog grounds kept separate on the die?

a)  Integrate large resistors between digital / analog regions

b)  Integrate large inductors between digital / analog regions

c)  There is no effective method for separating digital / analog grounds

d)  Separate digital / analog ground metal on the die, with separate off-chip digital / analog grounding points



9.  For what purpose is parasitic extraction used?

a)  Obtaining parasitic current / voltage values for use in production testing

b)  Obtaining parasitic RLC values for publication in user datasheets

c)  Obtaining parasitic RLC values for use in simulation

d)  Obtaining parasitic current / voltage values for use in simulation



10.  What determines to a large extent the efficiency of a P+ guard ring?

a)  Impedance of the ground interconnect

b)  P-type doping density

c)  Passivation purity

d)  Voltage filtering



Need some help? Click here for the answers and explanations.

TotalTemp Technologies (Thermal Platforms) - RF Cafe
Innovative Power Products Passive RF Products - RF Cafe


ConductRF Phased Matched RF Cables - RF Cafe