SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
Test your basic knowledge |
RFID Technology
Start Test
Study First
Subject
:
it-skills
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Proximity systems (low range -mm) medium range (cm) and long range (m)
Read range
UHF
Coupling Element
Tag Generations
2. Optical and RFID hybrid
Constructive Interference
Slotted ALOHA
Receiver
Smart Label
3. The sender of this found out whether the transmission was successful by listening to the broadcast. If there was a collision - the sender transmitted after a random waiting period. The tags periodically send data packets with random quiet periods and
Dry Inlay
Annunciator
ALOHA
Antenna/Inductor
4. Die-cut web adhesive - paper face
Tag
Polarization
Flip-chip (Chip-to-Tag)
Processor
5. An electronic signal or indicator - Audible alarms - strobes - light stacks - etc.
Tag List
UHF
Annunciator
Receiver
6. One of the most versatile actuators. Widely used in manufacturing plants. They enable a variety of actions to be performed (such as monitoring and controlling a product packaging line - or applying a predetermined amount of torque to nuts in a mechan
PLC
Nulls(Voids)
Tag
Serial Reader
7. Die used to "stamp" out the shape of antenna. Take up roller rolls the unused material into waste roll.
Persist Time
UHF
Actuator
Foil Stamping
8. Generation= Timeline of Introduction - Gen 1 & 2 - Gen 2 protocol backward compatible
Circular Polarized Reader Antenna
Tag Generations
Wet Inlay
Copper Etching
9. Inductive coupling and passive backscatter (capacitive coupling)
Pattern(Footprint)
RFID SyCommunication methods
Tag Collision
Reader Antennas
10. Frequencies between 30-300 KHz - Generally use passive tags - have low data-transfer rates from the tag to the reader - and are especially good if the operating environment contains metals - liquids - dirt - snow - or mud. Active tags also available
Creating A Tag
Low Frequency (LF)
Memory
Reader Antenna
11. Continuous web - no adhesive
Slotted ALOHA
Microwave Frequency
Memory
Dry Inlay
12. Developed in the 1970s for a radio packet network at the University of Hawaii (hence the name) - 4 tags and 1 reader - Allows tags to collide partially (Theoretically proven maximum utilization=18.4%)
Antenna/Inductor
Modulation Circuitry
Characteristics Of Antennas That Contribute To Tag Readability
ALOHA
13. changes signal received from reader to include data that will be transmitted back to the reader
Modulation Circuitry
Slotted ALOHA
Main Components of RFID Tag
Receiver
14. controls the internal functions under the command of the processor
Types of Tag Frequencies
Control Circuitry
Sensor
Dry Inlay
15. Also called a fixed reader - Mounted on a wall - portal - or some suitable structure in the read zone. Readers not generally very tolerant of harsh environmental conditions - therefore if installed outdoors or on moving objects - take care to ruggedi
Flip-chip (Chip-to-Tag)
Dry Inlay
Stationary Reader
Strap-to-Tag
16. Mount the tiny chip to a strap - Greater handling ability - Possibility to use very small chips - Possibility of higher volume production - Fluidic Self Assembly
Tag class
Strap-to-Tag
Passive Backscatter (Capacitive Coupling)
Pattern(Footprint)
17. A mechanical device for controlling or moving objects - A programmable logic controller (PLC) - robot arm - mechanical arm - etc.
Actuator
Creating A Tag
Linear Polarized Antenna
Destructive Interference
18. RF energy radiates from antenna in linear fashion - Provide longest range - Sensitive to the orientation of tag - Has single E-field component - Can have a narrow beam pattern - Best for application with known tag orientation
Processor
Persist Time
Linear Polarized Reader Antenna
RFID SyCommunication methods
19. This type of antenna is largely unaffected by tag orientation - Preferred in system that uses high UHF or microwave frequencies in an operating environment where there is a high degree of RF reflectance (due to presence of metals and so forth)
Attenuator
Power Source
Slotted ALOHA
Circular Polarized Antenna
20. 'Central nervous system' of entire RFID hardware system. Establishing communication with and control of this component is the most important task of any entity which seeks integration
Stationary Reader
RFID Reader
Antenna Footprint
Passive Backscatter (Capacitive Coupling)
21. Measurement of power for radiation of antenna used in Europe
Serial Reader
Tag Standards
Effective Radiated Power (ERP)
Slotted ALOHA
22. Readability of a tag greatly depends on this and the angle at which the tag is presented to the reader
Stationary Reader
RFID Printer
Dry Inlay
Polarization
23. Reader receives and executes commands from an application running on a host machine from a user using a vendor-supplied client to communicate with the reader. After reader fully executes the current command - it waits for the next. Reader can execute
Interactive Mode
Memory
Types of tags
Processor
24. When two waves (out of phase) impose on each other and the original signal is cancelled. Nulls are created s a result
Integrated Circuit Chips
Screen Printing
Power Source
Destructive Interference
25. The time during which a reader can emit RF energy to read tags
PLC
Control Circuitry
Duty Cycle
ALOHA
26. Why ___________ is better: Cost of printed antennas varies between 24-44% of copper antennas - Printed antennas show 93-96% radiation efficiency compared to copper antennas...
Read range
RFID Reader
Tag Antenna Construction
Coupling Element
27. Can reduce power by placing this device in the transmission line. As a result - the antennas signal is reduced and the read range diminished. Proves useful in situations where the read zone needs to be constrained as a part of system requirements so
Characteristics Of Antennas That Contribute To Tag Readability
Attenuator
ALOHA
Types of Tag Frequencies
28. Serves as writable or non-writable data storage
RFID Reader
Memory
RFID Reader
Integrated Circuit Chips
29. Interprets the signal received from reader and controls memory storage and retrieval
Linear Polarized Reader Antenna
Slotted ALOHA
RFID Reader
Processor
30. Fixed to meet FCC and other regulatory requirements. The signal can be decreased or attenuated to limit the tag read window or aim it only at tags you want to read
Tag Collision
Control Circuitry
Creating A Tag
Power/Attenuation
31. Uses a serial communication link to communicate with an application - Reader is physically connected to a computer's serial port using an RS-232 or RS-485 serial connection. Both of these connections have an upper limit on the cable length that can b
Agile Reader
Linear Polarized Antenna
Serial Reader
Tag Collision
32. Neighboring readers interrogate a tag simultaneously (can be easily solved because they can detect this and communicate to each other)
Modulation Circuitry
Antenna Footprint
Reader Collision
Circular Polarized Reader Antenna
33. Reader transmits a continuous-wave RF signal into the reading environment
Power Source
Passive Backscatter (Capacitive Coupling)
Characteristics Of Antennas That Contribute To Tag Readability
Destructive Interference
34. Ranges upward from 1 GHz - Typically operates at either 2.45 GHz or 5.8 GHz - Can use both semi-active and passive tags - Has FASTEST data-transfer rate between tag and reader - Performs poorly in presence of metals and liquids - Antenna of a passive
Antenna Footprint
Destructive Interference
Microwave Frequency
Read range
35. Reader communicates to a tag through reader's antennas - a separate device that is physically attached to a reader - at one of its antenna ports - by means of cable. Called this because it creates an electromagnetic field to couple with the tag.
Circular Polarized Antenna
Reader Antennas
Coupling Element
Stationary Reader
36. Also called an 'interrogator' - A device that can read from and write data to compatible RFID tags - Also doubles up as a writer
Tag Standards
Slotted ALOHA
RFID Reader
Inductive Coupling
37. When two waves (in phase) impose on each other and enhance the original signal and give rise to protrusions
ALOHA
Circular Polarized Antenna
Tag
Constructive Interference
38. The 3D energy field generated by the antenna (also called reading area)
RFID Printer
Pattern(Footprint)
Foil Stamping
Commissioning The Tag
39. Smart cards - smart label - etc.
Types of tags
Main Components of RFID Tag
Passive Backscatter (Capacitive Coupling)
Foil Stamping
40. UHF and microwave passive tags
Passive Backscatter (Capacitive Coupling)
Attenuator
Tag
Wet Inlay
41. The orientation of the transmitted electromagnetic field or the direction of oscillation of electromagnetically emitted waves
Linear Polarized Antenna
Characteristics Of Antennas That Contribute To Tag Readability
Passive Communication Methods
Polarization
42. Used to transmit AC power and the clock cycle via its antennas to the tags in its read zone
Agile Reader
Tag Anti-Collision Protocols
Linear Polarized Antenna
Transmitter
43. Process of creating a tag and uniquely associating it with an object
Copper Etching
Modulation Circuitry
Antenna/Inductor
Commissioning The Tag
44. Ranges from 300 MHz to 1GHz - Passive system operates at 915 MHz in the US and at 868 MHz in Europe - Active system operates at 315 MHz and 433 MHz - Can use both active and passive tags - Has a fast data-transfer rate between tag and reader - but pe
Copper Etching
UHF
Linear Polarized Reader Antenna
Adaptive Binary Tree Anti-Collision
45. Open image in meshed screens. Conductive ink "squeezed" thru open mesh.
Screen Printing
Types of tags
UHF
Copper Etching
46. Receives signal from reader and radiates a response back to the reader - LF or HF: induction coil - UHF or Microwave Frequency: printed antennas
Reader Collision
Adaptive Binary Tree Anti-Collision
Antenna/Inductor
Autonomous Mode
47. Silicon chip is picked up by robotized arm using precise vacuum nozzle. Chip is flipped so that its electrical contacts point face down. Chip is aligned with the antenna and pressure and heat is applied.
Flip-chip (Chip-to-Tag)
Foil Stamping
Processor
Linear Polarized Reader Antenna
48. Tags collide completely or not at all (Theoretically proven maximum utilization= 36.8%)
RFID Reader
ALOHA
Autonomous Mode
Slotted ALOHA
49. Most sensitive component of an RFID system - Housed in enclosures for easy mounting. Look like plain - shallow boxes. - Varying placement of this is usually the easiest adjustment while troubleshooting and is vital to achieving a high read rate
UHF
RFID Reader
RFID Printer
Reader Antennas
50. Image "burned" into photopolymer layer. All copper removed except where image was burned. Copper antenna goes through additional processes to protect from oxidation
Modulation Circuitry
Agile Reader
Tag Anti-Collision Protocols
Copper Etching