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RF Cafe Quizzes.
Note: Some material based on books have quoted passages.
This
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
stand for?
a) Longitudinal Coaxial Packaging b) Lateral
Coaxial Packaging c) Low-Loss Chimeral Packaging d) Liquid
Crystal Polymer
2. What does "liquid
crystal" mean?
a) A phase of matter that has partly solid and
partly liquid properties b) A crystal in the liquid phase c)
A liquid in the crystal phase d) A generic name for user informational
displays
3. What are the advantageous
electrical properties of LCP material?
a) Low dielectric constant
and loss tangent b) Low DC resistance and high inductance c)
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 b)
As a semiconductor c) As a substrate for printed circuits d)
As a heat dissipation plate
5. What
is the maximum ratio of die size to package size for a chip-scale package
(CSP)?
a) 1.0 b) 1.2 c) 1.5 d) 1.7
6. What is an advantage of using lumped
element embedded capacitive coupling on an LCP substrate?
a)
Space savings 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
9. What
property of LCP material make it good for hermetic packaging?
a)
High heat absorption b) Ultra-low moisture absorbtion c)
Strong as diamond d) It floats
Need some help? Click
here for the
answers and explanations.
Posted 10/18/2012
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