Homepage - RF Cafe
Webmaster: Kirt Blattenberger | KB3UON | Sitemap | ©1996-2014     Visit RF Cafe on
      Menu below is just a small sample of what is here!          Visit RF Cafe on Facebook Visit RF Cafe on Twitter Visit RF Cafe on LinkedIn
Custom Search
More than 10,000 searchable pages indexed.
•−•  ••−•    −•−•  •−  ••−•  •
RF Cafe Morse Code >Hear It<

Advanced RF MEMS
RF Cafe Quiz #36

| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
| 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 |
| 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 |
| 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 |
| 55 | 56 | 57 | 58 | 59 | 60 | 61 | 62 | 63 |

All RF Cafe quizzes would make perfect 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.

Some of these books used in quizzes are available as prizes in the monthly RF Cafe Giveaway.

Note: Many answers contain passages quoted in whole or in part from the text.

RF Cafe Featured Book - Advanced RF MEMS, by Stepan LucyszynThis 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.

A Disruptive Web Presence

Custom Search
Over 10,000 pages indexed! (none duped or pirated)

Read About RF Cafe
Webmaster: Kirt Blattenberger

RF Cafe Software

RF Cascade Workbook
RF Cascade Workbook is a very extensive system cascaded component Excel workbook that includes the standard Gain, NF, IP2, IP3, Psat calculations, input & output VSWR, noise BW, min/max tolerance, DC power cauculations, graphing of all RF parameters, and has a graphical block diagram tool. An extensive User's Guide is also included. - Only $35.
RF system analysis including
frequency conversion & filters

RF & EE Symbols Word
RF Stencils for Visio

Product & Service Directory
Personally Selected Manufacturers
RF Cafe T-Shirts & Mugs

RF Cafe Software

Calculator Workbook
RF Workbench
Smith Chart™ for Visio
Smith Chart™ for Excel
Your RF Cafe Progenitor & Webmaster
Click here to read about RF CafeKirt Blattenberger... single-handedly redefining what an
                                 engineering website should be.

View the YouTube RF Cafe Intro Video Carpe Diem! (Seize the Day!)

5CCG (5th MOB): My USAF radar shop

Airplanes and Rockets: My personal hobby website

Equine Kingdom: My daughter Sally's horse riding website