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Test your basic knowledge |
RFID Technology
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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. 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
Main Components of RFID Tag
Pattern(Footprint)
Autonomous Mode
ALOHA
2. 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%)
Microwave Frequency
Inductive Coupling
ALOHA
Receiver
3. Similar to guessing a number made of 1's and 0's by guessing each number one at a time
Reader Collision
Linear Polarized Antenna
UHF
Adaptive Binary Tree Anti-Collision
4. Smart cards - smart label - etc.
Memory
Passive Backscatter (Capacitive Coupling)
Attenuator
Types of tags
5. Low Frequency(LF) - High Frequency(HF) - Ultra high frequency (UHF) and Microwave frequency
Nulls(Voids)
Reader Antenna
Main Components of RFID Tag
Types of Tag Frequencies
6. The 3D energy field generated by the antenna (also called reading area)
Antenna/Inductor
Pattern(Footprint)
Passive Backscatter (Capacitive Coupling)
Autonomous Mode
7. Used to transmit AC power and the clock cycle via its antennas to the tags in its read zone
Transmitter
Control Circuitry
Flip-chip (Chip-to-Tag)
Duty Cycle
8. Die used to "stamp" out the shape of antenna. Take up roller rolls the unused material into waste roll.
Nulls(Voids)
Receiver
Screen Printing
Foil Stamping
9. Time for an associated tag to be read
Reader Antenna
Tag class
Persist Time
Decommissioning The Tag
10. Proximity systems (low range -mm) medium range (cm) and long range (m)
Slotted ALOHA
Read range
Tag
Tag Anti-Collision Protocols
11. Readability of a tag greatly depends on this and the angle at which the tag is presented to the reader
Polarization
Agile Reader
Linear Polarized Antenna
Attenuator
12. Neighboring readers interrogate a tag simultaneously (can be easily solved because they can detect this and communicate to each other)
Reader Collision
Reader Antenna
Circular Polarized Antenna
Read range
13. Tags collide completely or not at all (Theoretically proven maximum utilization= 36.8%)
Flip-chip (Chip-to-Tag)
Slotted ALOHA
Microprocessor
RFID Reader
14. Responsible for implementing the reader protocol to communicate with compatible tags
Microprocessor
Decommissioning The Tag
Attenuator
Modulation Circuitry
15. A mechanical device for controlling or moving objects - A programmable logic controller (PLC) - robot arm - mechanical arm - etc.
Slotted ALOHA
Memory
Annunciator
Actuator
16. 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
Power/Attenuation
Equivalent Isotropic Radiated Power (EIRP)
Modulation Circuitry
RFID Reader
17. 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
RFID Printer
Tag Standards
Attenuator
Main Components of RFID Tag
18. Receives signal from reader and radiates a response back to the reader - LF or HF: induction coil - UHF or Microwave Frequency: printed antennas
Foil Stamping
Antenna/Inductor
Multipath
Microwave Frequency
19. UHF and microwave passive tags
Passive Backscatter (Capacitive Coupling)
Main Components of RFID Tag
Coupling Element
Microprocessor
20. Reader that can operate in different frequencies or can use different tag-to-reader communication protocols (generally stationary)
Reader Collision
Types of tags
Agile Reader
Types of Tag Frequencies
21. Measurement of power for radiation of antenna used in Europe
Effective Radiated Power (ERP)
Types of tags
Tag class
Power/Attenuation
22. 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
RFID Reader
Nulls(Voids)
ALOHA
Sensor
23. 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
Circular Polarized Reader Antenna
RFID Reader
Low Frequency (LF)
Tag Generations
24. 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
Reader Antenna
Passive Backscatter (Capacitive Coupling)
Control Circuitry
UHF
25. Also called an 'interrogator' - A device that can read from and write data to compatible RFID tags - Also doubles up as a writer
Control Circuitry
Antenna Footprint
RFID Reader
Multipath
26. Mount the tiny chip to a strap - Greater handling ability - Possibility to use very small chips - Possibility of higher volume production - Fluidic Self Assembly
Inductive Coupling
Coupling Element
RFID Printer
Strap-to-Tag
27. An electronic signal or indicator - Audible alarms - strobes - light stacks - etc.
Main Components of RFID Tag
Tag
Modulation Circuitry
Annunciator
28. controls the internal functions under the command of the processor
Tag class
Control Circuitry
Tag Generations
Flip-chip (Chip-to-Tag)
29. Reader transmits a continuous-wave RF signal into the reading environment
Slotted ALOHA
Memory
Antenna Footprint
Passive Backscatter (Capacitive Coupling)
30. Dead zones that surround protrusions in antenna footprint
Autonomous Mode
Characteristics Of Antennas That Contribute To Tag Readability
Nulls(Voids)
Tag Anti-Collision Protocols
31. 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)
Characteristics Of Antennas That Contribute To Tag Readability
Antenna/Inductor
Commissioning The Tag
32. 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
Power Source
Dry Inlay
Reader Antennas
Passive Backscatter (Capacitive Coupling)
33. Inductive coupling and passive backscatter (capacitive coupling)
Passive Communication Methods
Effective Radiated Power (ERP)
Agile Reader
Screen Printing
34. Every time a tag is read - it is saved to this
Flip-chip (Chip-to-Tag)
Destructive Interference
Pattern(Footprint)
Tag List
35. 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
Processor
Constructive Interference
PLC
Interactive Mode
36. 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
Duty Cycle
Reader Collision
Reader Antenna
Slotted ALOHA
37. When two waves (out of phase) impose on each other and the original signal is cancelled. Nulls are created s a result
Tag Standards
Dry Inlay
Destructive Interference
Persist Time
38. IC Chip - Antenna/Inductor - Power Source
Main Components of RFID Tag
Modulation Circuitry
Strap-to-Tag
Attenuator
39. 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.
Integrated Circuit Chips
Coupling Element
RFID Reader
Linear Polarized Antenna
40. Pattern(Footprint) - Power/Attenuation - and Polarization
Low Frequency (LF)
Characteristics Of Antennas That Contribute To Tag Readability
Power/Attenuation
Processor
41. The time during which a reader can emit RF energy to read tags
Linear Polarized Antenna
Main Components of RFID Tag
Duty Cycle
Transmitter
42. Optical and RFID hybrid
Processor
Smart Label
Linear Polarized Antenna
Characteristics Of Antennas That Contribute To Tag Readability
43. Used for storing data such as the reader configuration parameters and a list of tag reads
Smart Label
Circular Polarized Reader Antenna
Memory
Autonomous Mode
44. 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
Passive Communication Methods
Power Source
Processor
Interactive Mode
45. Die-cut web with adhesive - film face
Tag Generations
Decommissioning The Tag
Linear Polarized Reader Antenna
Wet Inlay
46. Receives analog signals from the tag via the reader antenna
Circular Polarized Antenna
ALOHA
Decommissioning The Tag
Receiver
47. Generation= Timeline of Introduction - Gen 1 & 2 - Gen 2 protocol backward compatible
Tag Generations
Tag
Transmitter
Microprocessor
48. To disassociate the tag from a tagged object and optionally destroy it
ALOHA
Serial Reader
Coupling Element
Decommissioning The Tag
49. 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
Receiver
Linear Polarized Reader Antenna
Low Frequency (LF)
50. Serves as writable or non-writable data storage
Memory
Decommissioning The Tag
Microprocessor
Microwave Frequency
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