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!
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RF Cafe Quizzes.
Note: Some material based on books have
This quiz is based on the information presented
in Handbook of RF, Microwave, and Millimeter-Wave Components, by Sergey M. Smolskiy,
Leonid A. Belov, and Victor N. Kochemasov.
1. What type of switch is shown to the right?
a) Fail-safe switch
b) 4-pole-4-throw switch
d) Normally open switch
2. What is an adapto-attenuator?
a) Combination connector between-series adaptor and an attenuator
An attenuator manufactured by the Adapto company
c) An adaptable/variable
d) A device for adapting attenuators
3. What do we call the difference in decibels of the power
output at a coupled port, when power is transmitted in the desired direction, to
the power output at the same coupled port when power is transmitted in the opposite
4. What is the main use of a circulator?
a) To circularly polarize the signal
b) To separate the I and
Q signal components
c) To omnidirectionally direct signals from one port
specifically to another
d) To unidirectionally direct signals from one
port specifically to another
5. What is a lumped element element filter?
a) A filter constructed of distributed elements
b) A filter constructed
of standard wire-wound inductors and parallel plate capacitors
c) A filter
approximation for mathematical modeling
d) No such thing
6. What is a very desirable feature of a YIG (yttrium-iron
a) High Q factor
b) Electrically tunable over a wide bandwidth
c) High frequencies
d) All the above
What does the image to the right represent?
a) 4-QAM constellation
b) 16-QAM constellation
8. In which operational region of an amplifier is its1
dB compression point?
a) Low frequency region
b) High frequency region
d) Nonlinear region
9. What is an image rejection mixer?
a) A mixer that prevents the image frequency from appearing at the output
b) A mixer that prevents the negative frequency from appearing at the output
c) A mixer that prevents the upper sideband from appearing at the output
d) A mixer that prevents the lower sideband from appearing at the output
10. What are the main electrical characteristics of a
a) Package size, material (aluminum, steel, molybdenum, etc.), and weight
b) Connector type, input voltage, control signal pinout
c) Both a)
d) Center frequency, stability, phase noise, harmonics, output power
Need some help? Click here for
answers and explanations.
Posted September 9, 2020