 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 presented in Advanced RF MEMS, by Stepan Lucyszyn. This book is full of
cool micrographs of actual device geometries.
Cambridge University Press is the publisher. Note: Some of these books are
available as prizes in the monthly RF Cafe
Giveaway.
1. What does the acronym MEMS stand for? a) Micro Electro Mechanical deviceS
b) Microelectromechanical Systems c) Micro Electronic & Mechanical deviceS d) Miniature Electromechanical
system 2. Which material is commonly used in RF MEMS for its superior
magnetic and thermal expansion properties? a) Cotton b) Tin oxide c) Electroplated nickel
d) Homogenized Strontium 3. What distinguishes MEMS devices from traditional
integrated circuits? a) Significantly higher gain for amplifiers b) Radiation hardening for space
environments c) Less expensive to produce d) Physical displacement of internal components
4. Which properties of a MEMS RF switch are superior to a solid state RF switch? a)
Insertion loss and bandwidth b) Speed and size c) Device packaging d) Interconnects
5. Which properties of a MEMS RF switch are inferior to a solid state RF switch?
a) Insertion loss and bandwidth b) Speed and size c) Device packaging
d) Interconnects 6. What is the purpose of a sacrificial layer during MEMS
fabrication? a) Faster processing b) Cheaper to produce c) It appeases the MEMS gods d) Allows
dry etching to reduce undercutting and erosion common with wet etching
7. Which application would be perfect for multi-pole, multi-throw MEMS RF switch? a)
Test matrix measurement setups b) Multi-band smartphones c) Steerable antenna arrays d) All the above
8. What is the purpose of a "hold electrode?"
a) To counter induced bias from a strong RF signal power level b) To keep the connection from letting go
c) To prevent arcing d) Named after inventor Emmanuel Hold 9. Which
phenomenon is possible in a MEMS device but not in a solid state device? a) Shock-induced actuation
b) Activation due to cosmic rays c) Overcurrent fusing d) Oscillation
10. What is zero-level (0-level) packaging? a) No encapsulation required b) The
highest level of clean room for encapsulation c) On-wafer encapsulation d) Metallic packaging
Need some help? Click here for the
answers and explanations.
|
