All RF Cafe quizzes make great fodder
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.
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RF Cafe Quizzes.
Note: Some material based on books have quoted passages.
quiz is based on the information presented in LCP for Microwave Packages
and Modules, by Anh-Vu H. Pham, Morgan J. Chen, and Kunia Aihara.
1. What does LCP
a) Longitudinal Coaxial Packaging
c) Low-Loss Chimeral Packaging
2. What does "liquid
a) A phase of matter that has partly solid and
partly liquid properties
b) A crystal in the liquid phase
A liquid in the crystal phase
d) A generic name for user informational
3. What are the advantageous
electrical properties of LCP material?
a) Low dielectric constant
and loss tangent
b) Low DC resistance and high inductance
High dielectric constant and loss tangent
d) High DC resistance
and high inductance
4. How is LCP used
in microwave and mm-wave circuits?
a) As a conductor
As a semiconductor
c) As a substrate for printed circuits
As a heat dissipation plate
is the maximum ratio of die size to package size for a chip-scale package
6. What is an advantage of using lumped
element embedded capacitive coupling on an LCP substrate?
b) Lower insertion loss
c) Eliminates the
need for a feedthrough via
d) Reduces the number of layers
7. What happens to common-mode signals
at the single-ended output port of an ideal balun?
a) They double
in amplitude and are transmitted through the port
b) They halve in
amplitude and are transmitted through the port
c) They are completely
transmitted through the port
d) They are completely reflected back
away from the port
8. What is a primary
advantage of a long time delay (LTD) line over a phase shifter when used in
pulsed power applications?
a) LTD line is inherently wideband
b) LTD line is inherently narrowband
c) LDT line is lossier
d) LTD line is less lossy
property of LCP material make it good for hermetic packaging?
High heat absorption
b) Ultra-low moisture absorbtion
Strong as diamond
d) It floats
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