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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. An electronic signal or indicator - Audible alarms - strobes - light stacks - etc.
Annunciator
Circular Polarized Reader Antenna
Control Circuitry
Memory
2. When two waves (in phase) impose on each other and enhance the original signal and give rise to protrusions
Constructive Interference
Tag Standards
Slotted ALOHA
Wet Inlay
3. Divides time into discrete time intervals (slots) . A packet can only be transmitted at the beginning of a slot - reduces the collision duration.
Antenna Footprint
Tag class
Power Source
Slotted ALOHA
4. Tags collide completely or not at all (Theoretically proven maximum utilization= 36.8%)
Slotted ALOHA
Reader Collision
Tag Standards
Multipath
5. Brains of the RFID tag
Passive Backscatter (Capacitive Coupling)
Integrated Circuit Chips
Linear Polarized Reader Antenna
Receiver
6. 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
Polarization
UHF
Duty Cycle
Reader Antenna
7. 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
Memory
Screen Printing
Interactive Mode
Modulation Circuitry
8. Responsible for implementing the reader protocol to communicate with compatible tags
ALOHA
Microprocessor
Destructive Interference
Receiver
9. A mechanical device for controlling or moving objects - A programmable logic controller (PLC) - robot arm - mechanical arm - etc.
Flip-chip (Chip-to-Tag)
Polarization
Actuator
Reader Collision
10. Dead zones that surround protrusions in antenna footprint
Memory
Tag Generations
Nulls(Voids)
Commissioning The Tag
11. Time for an associated tag to be read
Smart Label
Slotted ALOHA
Persist Time
Integrated Circuit Chips
12. Open image in meshed screens. Conductive ink "squeezed" thru open mesh.
Screen Printing
Polarization
Tag Generations
RFID Printer
13. Used to transmit AC power and the clock cycle via its antennas to the tags in its read zone
Transmitter
Tag class
Power Source
Low Frequency (LF)
14. 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
Microwave Frequency
Serial Reader
Integrated Circuit Chips
Tag Collision
15. Process of creating a tag and uniquely associating it with an object
Autonomous Mode
Commissioning The Tag
Main Components of RFID Tag
Characteristics Of Antennas That Contribute To Tag Readability
16. Interprets the signal received from reader and controls memory storage and retrieval
Agile Reader
Persist Time
Reader Antennas
Processor
17. IC Chip - Antenna/Inductor - Power Source
Power Source
Main Components of RFID Tag
Control Circuitry
Antenna Footprint
18. Generation= Timeline of Introduction - Gen 1 & 2 - Gen 2 protocol backward compatible
Tag Generations
Types of tags
Destructive Interference
Serial Reader
19. Every time a tag is read - it is saved to this
Microwave Frequency
Tag List
Flip-chip (Chip-to-Tag)
ALOHA
20. 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%)
Integrated Circuit Chips
Nulls(Voids)
ALOHA
Receiver
21. When two waves (out of phase) impose on each other and the original signal is cancelled. Nulls are created s a result
Slotted ALOHA
Destructive Interference
Stationary Reader
Characteristics Of Antennas That Contribute To Tag Readability
22. Readability of a tag greatly depends on this and the angle at which the tag is presented to the reader
Attenuator
Polarization
Pattern(Footprint)
Effective Radiated Power (ERP)
23. changes signal received from reader to include data that will be transmitted back to the reader
Transmitter
Main Components of RFID Tag
Modulation Circuitry
Sensor
24. In this mode - reader continuously reads tags in its read zone
RFID SyCommunication methods
Copper Etching
Autonomous Mode
Control Circuitry
25. The reflection of reader antenna signals on RF-opaque causes this
Strap-to-Tag
Multipath
Characteristics Of Antennas That Contribute To Tag Readability
Wet Inlay
26. 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
Foil Stamping
Pattern(Footprint)
Memory
PLC
27. Low Frequency(LF) - High Frequency(HF) - Ultra high frequency (UHF) and Microwave frequency
Strap-to-Tag
Foil Stamping
Types of Tag Frequencies
Equivalent Isotropic Radiated Power (EIRP)
28. Pattern(Footprint) - Power/Attenuation - and Polarization
Tag
Microprocessor
Circular Polarized Reader Antenna
Characteristics Of Antennas That Contribute To Tag Readability
29. '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
Copper Etching
RFID Reader
Inductive Coupling
Passive Backscatter (Capacitive Coupling)
30. The act of writing the tag data by reader
Creating A Tag
Tag List
Modulation Circuitry
Slotted ALOHA
31. Reader transmits a continuous-wave RF signal into the reading environment
Polarization
Passive Backscatter (Capacitive Coupling)
Serial Reader
Microprocessor
32. These are categorized into Aloha based protocols and tree based
Adaptive Binary Tree Anti-Collision
Tag Anti-Collision Protocols
ALOHA
Serial Reader
33. 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
Main Components of RFID Tag
Linear Polarized Reader Antenna
Low Frequency (LF)
Microwave Frequency
34. Die-cut web with adhesive - film face
Wet Inlay
Modulation Circuitry
Transmitter
Tag Antenna Construction
35. Standards = EPC global & ISO 18000 - Different Organizations
Transmitter
Tag Standards
Dry Inlay
Polarization
36. 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
Destructive Interference
Equivalent Isotropic Radiated Power (EIRP)
Microwave Frequency
ALOHA
37. Continuous web - no adhesive
Adaptive Binary Tree Anti-Collision
Serial Reader
Dry Inlay
Annunciator
38. Used for storing data such as the reader configuration parameters and a list of tag reads
Circular Polarized Antenna
Tag Generations
Foil Stamping
Memory
39. 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
Inductive Coupling
Persist Time
Read range
UHF
40. 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
Antenna Footprint
Polarization
RFID Reader
Stationary Reader
41. The orientation of the transmitted electromagnetic field or the direction of oscillation of electromagnetically emitted waves
Circular Polarized Antenna
Passive Communication Methods
Constructive Interference
Polarization
42. Neighboring readers interrogate a tag simultaneously (can be easily solved because they can detect this and communicate to each other)
Sensor
Reader Collision
Annunciator
Actuator
43. Smart cards - smart label - etc.
Tag List
Memory
Types of tags
Tag Anti-Collision Protocols
44. Serves as writable or non-writable data storage
Memory
Antenna/Inductor
Types of Tag Frequencies
Main Components of RFID Tag
45. UHF and microwave passive tags
Passive Backscatter (Capacitive Coupling)
Types of tags
Persist Time
Microwave Frequency
46. 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
RFID Printer
PLC
Attenuator
47. Inductive coupling and passive backscatter (capacitive coupling)
Tag Generations
Passive Communication Methods
Slotted ALOHA
Effective Radiated Power (ERP)
48. In this this antenna type - the RF waves emanate in a linear pattern from the antenna. Waves have only one energy field
Polarization
Linear Polarized Antenna
Antenna Footprint
Pattern(Footprint)
49. 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
Reader Collision
Main Components of RFID Tag
RFID Reader
50. The 3D energy field generated by the antenna (also called reading area)
Attenuator
Strap-to-Tag
Pattern(Footprint)
Tag Standards