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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. Used for storing data such as the reader configuration parameters and a list of tag reads
Destructive Interference
Slotted ALOHA
Memory
Tag Antenna Construction
2. 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
Memory
Creating A Tag
UHF
ALOHA
3. In this this antenna type - the RF waves emanate in a linear pattern from the antenna. Waves have only one energy field
Polarization
Power Source
Linear Polarized Antenna
RFID Reader
4. 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.
Microwave Frequency
Types of Tag Frequencies
Antenna Footprint
Flip-chip (Chip-to-Tag)
5. 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
Tag Standards
Interactive Mode
Constructive Interference
Effective Radiated Power (ERP)
6. 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
Transmitter
Antenna Footprint
Flip-chip (Chip-to-Tag)
Pattern(Footprint)
7. Measurement of power for radiation of antenna used in US
Linear Polarized Antenna
Characteristics Of Antennas That Contribute To Tag Readability
Equivalent Isotropic Radiated Power (EIRP)
Decommissioning The Tag
8. Interprets the signal received from reader and controls memory storage and retrieval
Inductive Coupling
Processor
RFID Reader
RFID Printer
9. Brains of the RFID tag
Tag Antenna Construction
Copper Etching
Dry Inlay
Integrated Circuit Chips
10. Reader transmits a continuous-wave RF signal into the reading environment
Equivalent Isotropic Radiated Power (EIRP)
Passive Backscatter (Capacitive Coupling)
Actuator
Reader Antenna
11. LF and HF passive tags - Current flowing through a conductor generates a magnetic field around the conductor and vice versa - Readers antenna uses current to generate magnetic field - Tag's antenna when exposed to the magnetic field generates the cur
Microprocessor
Receiver
Memory
Inductive Coupling
12. The time during which a reader can emit RF energy to read tags
Processor
Duty Cycle
Types of Tag Frequencies
Memory
13. Open image in meshed screens. Conductive ink "squeezed" thru open mesh.
Constructive Interference
Screen Printing
Creating A Tag
Tag Standards
14. 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
Control Circuitry
Types of Tag Frequencies
Sensor
Characteristics Of Antennas That Contribute To Tag Readability
15. Readability of a tag greatly depends on this and the angle at which the tag is presented to the reader
RFID Reader
Receiver
Control Circuitry
Polarization
16. 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
Copper Etching
Reader Antenna
Power Source
Decommissioning The Tag
17. changes signal received from reader to include data that will be transmitted back to the reader
Attenuator
Power Source
Modulation Circuitry
Tag class
18. A mechanical device for controlling or moving objects - A programmable logic controller (PLC) - robot arm - mechanical arm - etc.
Actuator
Multipath
Destructive Interference
Read range
19. 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
Microprocessor
Characteristics Of Antennas That Contribute To Tag Readability
Equivalent Isotropic Radiated Power (EIRP)
PLC
20. In this mode - reader continuously reads tags in its read zone
Wet Inlay
Destructive Interference
Autonomous Mode
Tag Generations
21. Every time a tag is read - it is saved to this
Sensor
Coupling Element
ALOHA
Tag List
22. 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
Reader Collision
Power Source
Linear Polarized Antenna
Polarization
23. UHF and microwave passive tags
Main Components of RFID Tag
UHF
Passive Backscatter (Capacitive Coupling)
Inductive Coupling
24. 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.
Receiver
Coupling Element
ALOHA
Reader Antenna
25. When two waves (out of phase) impose on each other and the original signal is cancelled. Nulls are created s a result
Decommissioning The Tag
Destructive Interference
Tag Anti-Collision Protocols
Types of tags
26. 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%)
Flip-chip (Chip-to-Tag)
Actuator
ALOHA
RFID SyCommunication methods
27. Also called an 'interrogator' - A device that can read from and write data to compatible RFID tags - Also doubles up as a writer
Copper Etching
Smart Label
Tag Antenna Construction
RFID Reader
28. The orientation of the transmitted electromagnetic field or the direction of oscillation of electromagnetically emitted waves
Polarization
Smart Label
Foil Stamping
ALOHA
29. 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
Destructive Interference
UHF
Attenuator
Power/Attenuation
30. Optical and RFID hybrid
Slotted ALOHA
Screen Printing
RFID Reader
Smart Label
31. Standards = EPC global & ISO 18000 - Different Organizations
Tag Standards
Sensor
Autonomous Mode
Linear Polarized Reader Antenna
32. Class= Functionality - - Class 0 -1 -2 -3 -4 & 5
Tag class
Screen Printing
Constructive Interference
Types of tags
33. Inductive coupling and passive backscatter (capacitive coupling)
Passive Communication Methods
Read range
Pattern(Footprint)
RFID SyCommunication methods
34. 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
ALOHA
Control Circuitry
Power/Attenuation
Power Source
35. '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
Reader Collision
RFID Reader
Linear Polarized Antenna
Processor
36. Tags collide completely or not at all (Theoretically proven maximum utilization= 36.8%)
PLC
Autonomous Mode
ALOHA
Slotted ALOHA
37. 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
RFID Printer
Low Frequency (LF)
Power/Attenuation
Inductive Coupling
38. Inductive coupling and passive backscatter (capacitive coupling)
ALOHA
Microwave Frequency
Control Circuitry
Passive Communication Methods
39. To disassociate the tag from a tagged object and optionally destroy it
Decommissioning The Tag
Linear Polarized Antenna
Wet Inlay
Inductive Coupling
40. RF energy radiates from antenna in circular fashion - Slightly reduced range - Provides greater tolerance to tags in various orientation and bounce off of and bypass obstructions - 2 E-field components that are equal in magnitude - 90 degrees out of
Effective Radiated Power (ERP)
Polarization
Circular Polarized Reader Antenna
ALOHA
41. 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)
Linear Polarized Antenna
Circular Polarized Antenna
Reader Collision
Commissioning The Tag
42. Generation= Timeline of Introduction - Gen 1 & 2 - Gen 2 protocol backward compatible
Microwave Frequency
Linear Polarized Reader Antenna
Sensor
Tag Generations
43. Measurement of power for radiation of antenna used in Europe
Reader Antennas
Passive Backscatter (Capacitive Coupling)
Types of tags
Effective Radiated Power (ERP)
44. controls the internal functions under the command of the processor
Creating A Tag
Multipath
Adaptive Binary Tree Anti-Collision
Control Circuitry
45. Reader that can operate in different frequencies or can use different tag-to-reader communication protocols (generally stationary)
Duty Cycle
Reader Collision
Interactive Mode
Agile Reader
46. Die-cut web adhesive - paper face
Tag
Foil Stamping
Types of tags
Circular Polarized Antenna
47. Time for an associated tag to be read
Coupling Element
Memory
Persist Time
Power Source
48. Mount the tiny chip to a strap - Greater handling ability - Possibility to use very small chips - Possibility of higher volume production - Fluidic Self Assembly
Strap-to-Tag
Read range
Adaptive Binary Tree Anti-Collision
Antenna Footprint
49. An electronic signal or indicator - Audible alarms - strobes - light stacks - etc.
Integrated Circuit Chips
Passive Communication Methods
Power/Attenuation
Annunciator
50. Pattern(Footprint) - Power/Attenuation - and Polarization
Destructive Interference
Characteristics Of Antennas That Contribute To Tag Readability
Antenna/Inductor
Reader Collision