Electronics World Cover,TOC,and list of posted Popular Electronics articles QST Radio & TV News Radio-Craft Radio-Electronics Short Wave Craft Wireless World About RF Cafe RF Cafe Homepage RF Cafe in Morse Code Google Search of RF Cafe website Sitemap Electronics Equations Mathematics Equations Equations physics Manufacturers & distributors Manufacturers & Services Consultants Engineer Jobs Twitter LinkedIn Advertise on RF Cafe! Engineering Books Crosswords Engineering Humor Kirt's Cogitations Engineering Event Calendar Day in History RF Engineering Quizzes AN/MPN-14 Radar 5CCG Notable Quotes App Notes Bookstore Calculators Education Engineering Organizations Magazines Software,T-Shirts,Coffee Mugs Articles - submitted by RF Cafe visitors Simulators Technical Writings Advertisers Websites RF Cafe Archives Test Notes Slide Rules RF Cascade Workbook RF Stencils for Visio Shapes for Word Thank you for visiting RF Cafe!

Your RF Cafe
Progenitor & Webmaster

Click here to read about RF CafeKirt Blattenberger
BSEE
KB3UON
EIEIO

Carpe Diem!
(Seize the Day!)

5th MOB:
My USAF radar shop

Airplanes and Rockets:
My personal hobby website

Equine Kingdom:
My daughter Sally's horse riding website

Answers to LCP for Microwave Packages and Modules
Answers to RF Cafe Quiz #47

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.

Click here for the complete list of RF Cafe Quizzes.

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.


Return to RF Cafe Quiz #47


LCP for Microwave Packages and Modules - RF Cafe Featured BookThis 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?

d)  Liquid Crystal Polymer
Liquid crystal polymer (LCP) is a plastic material with barrier properties similar to ceramic crystal.
(see page 1)



2.  What does "liquid crystal" mean?

a)  A phase of matter that has partly solid and partly liquid properties
(see page 17)



3.  What are the advantageous electrical properties of LCP material?

a)  Low dielectric constant and loss tangent
(see page 20)



4.  How is LCP used in microwave and mm-wave circuits?

c)  As a substrate for printed circuits
(see the entire book)



5.  What is the maximum ratio of die size to package size for a chip-scale package (CSP)?

b)  1.2
As defined in IPC/JEDEC J-STD-012, chip-scale packaging (CSP) refers to a packaging method where the final package area dimensions are no larger than 1.2 times the die.
(see page 72)


6.  What is an advantage of using lumped element embedded capacitive coupling on an LCP substrate?

c)  It eliminates the need for a feedthrough via
The lumped element capacitor inherently blocks DC and eliminates the need for a via. A disadvantage is that lumped element printed capacitors are physically large.
(see page 132)


7.  What happens to common-mode signals at the single-ended output port of an ideal balun?

d)  They are completely reflected back away from the port
Common-mode signals are completely rejected and reflected back from a lossless balun since only differential signals are converted to single-ended signals and allowed transmission.
(see page 166)



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
Unlike a phase shifter, LTDs are inherently wideband and thus are ideal for pulse transmissions on phased array antenna systems.
(see page 193)



9.  What property of LCP material make it good for hermetic packaging?

b)  Ultra-low moisture absorption
LCP material has ultra-low moisture absorption and permeation close to that of glass.
(see page 226)


Posted  10/18/2012

Try Using SEARCH to Find What You Need.  >10,000 Pages Indexed on RF Cafe !

Copyright 1996 - 2016
Webmaster:  Kirt Blattenberger, BSEE - KB3UON
Family Websites:  Airplanes and Rockets | Equine Kingdom

All trademarks, copyrights, patents, and other rights of ownership to images
and text used on the RF Cafe website are hereby acknowledged.