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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. Neighboring readers interrogate a tag simultaneously (can be easily solved because they can detect this and communicate to each other)
Transmitter
Agile Reader
Reader Collision
Power/Attenuation
2. Proximity systems (low range -mm) medium range (cm) and long range (m)
Read range
Slotted ALOHA
Characteristics Of Antennas That Contribute To Tag Readability
Tag Generations
3. In this this antenna type - the RF waves emanate in a linear pattern from the antenna. Waves have only one energy field
Linear Polarized Antenna
Modulation Circuitry
RFID Reader
PLC
4. Die-cut web adhesive - paper face
Main Components of RFID Tag
Tag
Duty Cycle
Transmitter
5. Process of creating a tag and uniquely associating it with an object
Commissioning The Tag
Microprocessor
Sensor
Interactive Mode
6. When two waves (out of phase) impose on each other and the original signal is cancelled. Nulls are created s a result
Destructive Interference
Reader Antenna
ALOHA
Memory
7. Reader that can operate in different frequencies or can use different tag-to-reader communication protocols (generally stationary)
Agile Reader
Modulation Circuitry
Main Components of RFID Tag
Passive Backscatter (Capacitive Coupling)
8. Class= Functionality - - Class 0 -1 -2 -3 -4 & 5
Foil Stamping
Tag class
Interactive Mode
Destructive Interference
9. In this mode - reader continuously reads tags in its read zone
Linear Polarized Antenna
Autonomous Mode
Microwave Frequency
RFID Reader
10. Low Frequency(LF) - High Frequency(HF) - Ultra high frequency (UHF) and Microwave frequency
Low Frequency (LF)
Nulls(Voids)
Types of Tag Frequencies
Autonomous Mode
11. A mechanical device for controlling or moving objects - A programmable logic controller (PLC) - robot arm - mechanical arm - etc.
Screen Printing
Actuator
Read range
Flip-chip (Chip-to-Tag)
12. Responsible for implementing the reader protocol to communicate with compatible tags
Microprocessor
Tag Anti-Collision Protocols
Main Components of RFID Tag
Autonomous Mode
13. Used for storing data such as the reader configuration parameters and a list of tag reads
Screen Printing
Linear Polarized Reader Antenna
Memory
Tag Anti-Collision Protocols
14. Measurement of power for radiation of antenna used in US
Equivalent Isotropic Radiated Power (EIRP)
ALOHA
Tag Anti-Collision Protocols
Antenna Footprint
15. 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.
Coupling Element
Pattern(Footprint)
Persist Time
Tag Standards
16. When two waves (in phase) impose on each other and enhance the original signal and give rise to protrusions
Destructive Interference
Serial Reader
Processor
Constructive Interference
17. controls the internal functions under the command of the processor
Constructive Interference
Annunciator
Screen Printing
Control Circuitry
18. To disassociate the tag from a tagged object and optionally destroy it
Annunciator
Memory
Decommissioning The Tag
ALOHA
19. 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
Processor
Stationary Reader
Foil Stamping
Annunciator
20. UHF and microwave passive tags
Strap-to-Tag
Agile Reader
Foil Stamping
Passive Backscatter (Capacitive Coupling)
21. 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
Wet Inlay
Main Components of RFID Tag
Low Frequency (LF)
Antenna/Inductor
22. The orientation of the transmitted electromagnetic field or the direction of oscillation of electromagnetically emitted waves
Tag List
Types of Tag Frequencies
Polarization
Destructive Interference
23. 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%)
Serial Reader
Types of tags
Tag List
ALOHA
24. 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
Antenna Footprint
Power/Attenuation
Linear Polarized Reader Antenna
Tag Standards
25. 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
PLC
Passive Communication Methods
Tag List
Serial Reader
26. The act of writing the tag data by reader
Stationary Reader
Interactive Mode
Creating A Tag
Modulation Circuitry
27. Generation= Timeline of Introduction - Gen 1 & 2 - Gen 2 protocol backward compatible
Transmitter
Persist Time
Tag Generations
Coupling Element
28. Broadcasts the reader transmitter's RF signal into its surroundings and receives tag responses on the reader's behalf. Therefore - proper positioning of these (NOT THE READERS) is essential for good read accuracy
Polarization
Commissioning The Tag
RFID SyCommunication methods
Reader Antenna
29. Determines the read zone of a reader - Also called an antenna pattern - 3D region shaped somewhat like an ellipsoid or a balloon projecting out the front of the antenna. Never uniformly shaped like an ellipsoid but almost always contains deformities
Duty Cycle
Antenna Footprint
Processor
Foil Stamping
30. 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
Stationary Reader
Linear Polarized Antenna
Flip-chip (Chip-to-Tag)
Reader Antennas
31. Receives signal from reader and radiates a response back to the reader - LF or HF: induction coil - UHF or Microwave Frequency: printed antennas
Antenna/Inductor
Actuator
Attenuator
Destructive Interference
32. Pattern(Footprint) - Power/Attenuation - and Polarization
Characteristics Of Antennas That Contribute To Tag Readability
Pattern(Footprint)
Types of tags
Interactive Mode
33. Inductive coupling and passive backscatter (capacitive coupling)
RFID SyCommunication methods
Linear Polarized Antenna
Decommissioning The Tag
Polarization
34. Can automatically turn on/off reader based on some external event detected. Can be used to provide some kind of input trigger to a reader
Sensor
Main Components of RFID Tag
Tag Anti-Collision Protocols
Linear Polarized Reader Antenna
35. Continuous web - no adhesive
Annunciator
Dry Inlay
Linear Polarized Antenna
Attenuator
36. 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
Adaptive Binary Tree Anti-Collision
PLC
ALOHA
Autonomous Mode
37. 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
Transmitter
Attenuator
Smart Label
Low Frequency (LF)
38. Type of stationary reader that can print a bar code and create (i.e. write) an RFID tag on a smart label in an integrated operation - Reads the smart label tag that it has just written to validate the write operation. If the validation fails - it rej
Integrated Circuit Chips
RFID Printer
Actuator
Copper Etching
39. More than one tag tries to respond to a reader at the same time.
Main Components of RFID Tag
UHF
Multipath
Tag Collision
40. 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)
Tag
Circular Polarized Antenna
Screen Printing
Characteristics Of Antennas That Contribute To Tag Readability
41. Provides electrical power to other tag elements - Can harvest power from the signal received from the reader - Can have its own internal power source - Active - semi-passive and passive
Microprocessor
Commissioning The Tag
Power Source
Passive Backscatter (Capacitive Coupling)
42. Die used to "stamp" out the shape of antenna. Take up roller rolls the unused material into waste roll.
Foil Stamping
Circular Polarized Antenna
Multipath
Control Circuitry
43. Standards = EPC global & ISO 18000 - Different Organizations
Tag class
Smart Label
ALOHA
Tag Standards
44. Optical and RFID hybrid
Slotted ALOHA
Smart Label
Power Source
ALOHA
45. Similar to guessing a number made of 1's and 0's by guessing each number one at a time
Agile Reader
Stationary Reader
Reader Antenna
Adaptive Binary Tree Anti-Collision
46. 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
Stationary Reader
Circular Polarized Antenna
Power/Attenuation
Tag Antenna Construction
47. changes signal received from reader to include data that will be transmitted back to the reader
Wet Inlay
Modulation Circuitry
Tag class
Tag Standards
48. Image "burned" into photopolymer layer. All copper removed except where image was burned. Copper antenna goes through additional processes to protect from oxidation
Copper Etching
Circular Polarized Antenna
Low Frequency (LF)
Slotted ALOHA
49. Smart cards - smart label - etc.
Microprocessor
Types of Tag Frequencies
Types of tags
Antenna/Inductor
50. IC Chip - Antenna/Inductor - Power Source
ALOHA
Pattern(Footprint)
RFID Reader
Main Components of RFID Tag