All 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.
This quiz is based on the information
Practical Microwave Circuits, by Stephen A. Maas.
Note: Some of these books are available as
prizes in the monthly RF Cafe Giveaway.
"This book is a collection of things I learned. largely on my own, over forty
years in microwave circuit design. While almost all of the material in this book
existed somewhere in some form, no single source was comprehensive and accessible.
I learned most of it by experience, talking to people and digging through technical
papers and books. In some cases, I just had to figure it out..."
1. Where are coupled transmission lines likely to be found?
b) Directional couplers.
All the above.
2. What is a homogeneous transmission line?
a) A transmission line with a constant cross-section.
b) A transmission
line with a single conductor.
c) A transmission line which can only be
mated to a similar transmission line.
d) A transmission line in which all
of the field lines are contained within a single dielectric medium.
3. Which transmission line is an example of a non-homogeneous
a) Ladder line.
c) Coaxial line.
4. Which problem did the Lange coupler solve for two-strip
a) The inability to achieve sufficient coupling between two edge-coupled
strips to realize a 3-dB coupler.
b) The inability to prevent excessive
coupling between two edge-coupled strips to realize a 3-dB coupler
frequency operation became possible.
d) Low frequency operation became
5. Which of the following describes a balanced transmission
a) Two lines equally distributed on the substrate.
b) Even and
odd mode waves are equal on both conductors.
c) The ground is used as a
d) Two conductors of identical cross-section surrounded by free
space (isolated from ground).
6. Which of the following describes an unbalanced transmission
a) Two lines unequally distributed on the substrate.
fields "leak" from the edges of the conductor.
c) Uses the ground surface
as one conductor.
d) Unequal currents in the conductors.
7. When did S parameters first come into common use?
8. What is the main difference between microwave and lower
frequency analog circuit design?
a) Microwave design focuses more on maximum power transfer whereas lower
design focuses more on voltage gain.
b) Microwaves are at a higher frequency.
c) Microwave circuits require
d) Analog circuits are available in integrated form.
9. What is another name for a normalized lowpass filter
a) A Butterworth filter.
b) A Chebyshev filter.
d) A prototype network.
10. What is meant by "de-embedding" S parameters?
a) Removing embedded losses from the measurement.
all effects test fixture elements from the measurement of a discrete component being
c) Removing capacitive influences.
d) Removing even
and odd mode waves from the equation.
Need some help? Click here for
the answers and explanations.
Quizzes from vintage electronics magazines such as Popular
Electronics, Electronics-World, QST, and Radio News
were published over the years - some really simple and others not so simple. Robert P. Balin
created most of the quizzes for Popular Electronics. This is a listing
of all I have posted thus far.
- RF Cafe Quiz #70:
RF Filter Basics
- RF Cafe Quiz #69:
- RF Cafe Quiz #68:
RF & Analog Company Mergers & Acquisitions in 2017
- RF Cafe Quiz #67:
RF & Microwave Company Name Change History
- RF Cafe Quiz #66:
Spectrum and Network Measurements
- RF Cafe Quiz #65:
Troubleshooting & Repairing Commercial Electrical Equipment
- RF Cafe Quiz #64:
Space-Time Adaptive Processing for Radar
- RF Cafe Quiz #63:
Envelope Tracking Power Amplifiers
- RF Cafe Quiz #62:
Stimson's Introduction to Airborne Radar
- RF Cafe Quiz #61:
Practical Microwave Circuits
- RF Cafe Quiz #60:
Ten Essential Skills for Electrical Engineers
- RF Cafe Quiz #59:
Microwave Circulator Design
- RF Cafe Quiz #58:
Microwave and Millimeter-Wave Electronic Packaging
- RF Cafe Quiz #57:
Frequency-Agile Antennas for Wireless Communications
- RF Cafe Quiz #56:
and Electron Tube Equipment
- RF Cafe Quiz #55:
- RF Cafe Quiz #54:
Microwave Mixer Technology and Applications
- RF Cafe Quiz #53:
Chipless RFID Reader Architecture
- RF Cafe Quiz #52:
RF and Microwave Power Amplifiers
- RF Cafe Quiz #51:
Antennas and Site Engineering for Mobile Radio Networks
- RF Cafe Quiz #50:
Microstrip Lines and Slotlines
- RF Cafe Quiz #49:
High-Frequency Integrated Circuits
- RF Cafe Quiz #48:
Introduction to Infrared and Electro-Optical Systems
- RF Cafe Quiz #47:
LCP for Microwave Packages and Modules
- RF Cafe Quiz #46:
RF, Microwave, and Millimeter-Wave Components
- RF Cafe Quiz #45:
Dielectric and Thermal Properties of Materials at Microwave Frequencies
- RF Cafe Quiz #44:
Monopulse Principles and Techniques
- RF Cafe Quiz #43:
- RF Cafe Quiz #42: The Micro-Doppler
Effect in Radar
- RF Cafe Quiz #41: Introduction
to RF Design Using EM Simulators
- RF Cafe Quiz #40: Introduction
to Antenna Analysis Using EM Simulation
- RF Cafe Quiz #39: Emerging
Wireless Technologies and the Future Mobile Internet
- RF Cafe Quiz #38: Klystrons,
Traveling Wave Tubes, Magnetrons, Crossed-Field Amplifiers, and Gyrotrons
- RF Cafe Quiz #37: Component
Reliability for Electronic Systems
- RF Cafe Quiz #36: Advanced
- RF Cafe Quiz #35: Frequency
Synthesizers: Concept to Product
- RF Cafe Quiz #34: Multi-Gigabit
Microwave and Millimeter-Wave Wireless Communications
- RF Cafe Quiz #33: Battlespace
Technologies: Network-Enabled Information Dominance
- RF Cafe Quiz #32: Modern Communications
Receiver Design and Technology
- RF Cafe Quiz #31: Quantum
Mechanics of Nanostructures
- RF Cafe Quiz #30: OFDMA System
Analysis and Design
- RF Cafe Quiz #29: Cognitive
- RF Cafe Quiz #28: Human-Centered
- RF Cafe Quiz #27: Remarkable
- RF Cafe Quiz #26: Substrate
Noise Coupling in Analog/RF Circuits
- RF Cafe Quiz #25: Component
Reliability for Electronic Systems
- RF Cafe Quiz #24: Ultra Low
- RF Cafe Quiz #23: Digital
- RF Cafe Quiz #22: Remember
- RF Cafe Quiz #21: Wireless
- RF Cafe Quiz #20: Famous First
- RF Cafe Quiz #19: Basic Circuit
- RF Cafe Quiz #18: Archaic
Scientific Words & Definitions
- RF Cafe Quiz #17: Inventors &
- RF Cafe Quiz #16: Antennas
- RF Cafe Quiz #15: Numerical
- RF Cafe Quiz #14: Oscillators
- RF Cafe Quiz #13: General
- RF Cafe Quiz #12: Electronics
- RF Cafe Quiz #11: Famous Inventors &
- RF Cafe Quiz #10: A Sampling
of RF & Wireless Topics
- RF Cafe Quiz #9: A Smorgasbord
of RF Topics
- RF Cafe Quiz #8: Hallmark Decades
- RF Cafe Quiz #7: Radar Fundamentals
- RF Cafe Quiz #6: Wireless Communications
- RF Cafe Quiz #5: Company Logo
- RF Cafe Quiz #4: General RF
- RF Cafe Quiz #3: General RF/Microwave
- RF Cafe Quiz #2: General RF
- RF Cafe Quiz #1: General RF
- Vacuum Tube Quiz,
February 1961 Popular Electronics
- Kool-Keeping Kwiz, June
1970 Popular Electronics
- Find the Brightest
Bulb Quiz, April 1960 Popular Electronics
Where Do the Scientists Belong? - Feb 19, 1949 Saturday Evening Post
- Color Code Quiz
- November 1967 Popular Electronics
- August 1961 Popular Electronics
Winding Quiz - December 1964 Popular Electronics
Audiophile Quiz - November 1957 Radio-electronics
Function Quiz - March 1962 Popular Electronics
- Greek Alphabet
Quiz - December 1963 Popular Electronics
Designer's Name Quiz - July 19680 Popular Electronics
Sawtooth Sticklers Quiz - November 1960 Radio-Electronics
Radio Quiz - December 1947 Radio-Craft
Quiz - October 1955 Radio & Television News
- Electronics Physics
Quiz - March 1974 Popular Electronics
- A Baffling Quiz
- January 1968 Popular Electronics
- Electronics IQ
Quiz - May 1967 Popular Electronics
- Plug and Jack
Quiz - December 1967 Popular Electronics
Switching Quiz - October 1967 Popular Electronics
Angle Quiz - September 1967 Popular Electronics
Electronics Quiz - July 1967 Popular Electronics
- FM Radio
Quiz - April 1950 Radio & Television News
- Bridge Circuit
Quiz -December 1966 Popular Electronics
- Diode Function
Quiz - August 1965 Popular Electronics
- Diagram Quiz,
August 1966 Popular Electronics
- Quist Quiz - November
- TV Trouble Quiz,
July 1966 Popular Electronics
- Electronics History Quiz,
December 1965 Popular Electronics
- Scope-Trace Quiz,
March 1965 Popular Electronics
Circuit Analogy Quiz, April 1973
Test Your Knowledge of Semiconductors, August 1972 Popular Electronics
- Ganged Switching
Quiz, April 1972 Popular Electronics
- Lamp Brightness
Quiz, January 1969 Popular Electronics
Pattern Quiz, September 1963 Popular Electronics
Quizoo, October 1962 Popular Electronics
Photo Album Quiz, March 1963 Popular Electronics
Alphabet Quiz, May 1963 Popular Electronics
- Quiz: Resistive?
Inductive? or Capacitive?, October 1960 Popular Electronics
Matching Quiz, June 1970 Popular Electronics
Quiz, September 1961 Popular Electronics
- RC Circuit Quiz,
June 1963 Popular Electronics
- Diode Quiz, July
1961 Popular Electronics
Curves Quiz, February 1963 Popular Electronics
Numbers Quiz, December 1962 Popular Electronics
- Energy Conversion
Quiz, April 1963 Popular Electronics
- Coil Function
Quiz, June 1962 Popular Electronics
Co-Inventors Quiz - January 1965 Electronics World
"-Tron" Teasers Quiz - October 1963 Electronics World
- Polarity Quiz
- March 1968 Popular Electronics
I.Q. Quiz - October 1948 Radio & Television News
- Amplifier Quiz
Part I - February 1964 Popular Electronics
Quiz - February 1967 Popular Electronics
Frequency Quiz - September 1965 Popular Electronics
Metals Quiz - October 1964 Popular Electronics
Measurement Quiz - August 1967 Popular Electronics
Quiz, June 1966 Popular Electronics
Geometry Quiz, January 1965 Popular Electronics
Factor Quiz, November 1966 Popular Electronics
Math Quiz, November 1965 Popular Electronics
- Series Circuit
Quiz, May 1966 Popular Electronics
Quiz, March 1966 Popular Electronics
Quiz: Test Your Sales Ability - April 1947 Radio News
Analogy Quiz, November 1961 Popular Electronics
Coupling Quiz, August 1973 Popular Electronics
Analogy Quiz, August 1960 Popular Electronics
- Audio Quiz, April
1955 Popular Electronics
- Electronic Unit
Quiz, May 1962 Popular Electronics
Circuit Quiz, June 1968 Popular Electronics
on AC Circuit Theory, December 1970 Popular Electronics
Phenomena Quiz, February 1962 Popular Electronics
Geography Quiz, April 1970 Popular Electronics
Menu Quiz, August 1963 Popular Electronics
Noise Quiz, August 1962 Popular Electronics
Current Quiz, October 1963 Popular Electronics
Inventors Quiz, November 1963 Popular Electronics
- Resistor Function
Quiz, January 1962 Popular Electronics
Measurement Quiz, January 1963 Popular Electronics