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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)
Reader Collision
Characteristics Of Antennas That Contribute To Tag Readability
Strap-to-Tag
Linear Polarized Reader Antenna
2. 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
Power/Attenuation
Smart Label
Inductive Coupling
RFID SyCommunication methods
3. Responsible for implementing the reader protocol to communicate with compatible tags
Microprocessor
Reader Antennas
Integrated Circuit Chips
Modulation Circuitry
4. 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
Persist Time
Processor
Inductive Coupling
RFID Printer
5. Inductive coupling and passive backscatter (capacitive coupling)
Low Frequency (LF)
Wet Inlay
Duty Cycle
RFID SyCommunication methods
6. To disassociate the tag from a tagged object and optionally destroy it
Slotted ALOHA
Tag Anti-Collision Protocols
Circular Polarized Antenna
Decommissioning The Tag
7. A mechanical device for controlling or moving objects - A programmable logic controller (PLC) - robot arm - mechanical arm - etc.
Memory
Effective Radiated Power (ERP)
Passive Communication Methods
Actuator
8. 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
Types of Tag Frequencies
Creating A Tag
Transmitter
9. The orientation of the transmitted electromagnetic field or the direction of oscillation of electromagnetically emitted waves
Polarization
Serial Reader
Attenuator
Smart Label
10. Receives analog signals from the tag via the reader antenna
Receiver
Reader Antenna
Tag List
Polarization
11. Every time a tag is read - it is saved to this
Agile Reader
Strap-to-Tag
Tag List
Read range
12. In this mode - reader continuously reads tags in its read zone
Autonomous Mode
ALOHA
Main Components of RFID Tag
Tag List
13. Inductive coupling and passive backscatter (capacitive coupling)
Linear Polarized Antenna
Passive Communication Methods
Tag class
Tag Antenna Construction
14. Used to transmit AC power and the clock cycle via its antennas to the tags in its read zone
Transmitter
Polarization
Interactive Mode
Slotted ALOHA
15. The act of writing the tag data by reader
Wet Inlay
ALOHA
Creating A Tag
Reader Collision
16. 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
Stationary Reader
Tag Antenna Construction
Memory
RFID Reader
17. Die-cut web adhesive - paper face
Destructive Interference
Passive Backscatter (Capacitive Coupling)
Autonomous Mode
Tag
18. Time for an associated tag to be read
Persist Time
Destructive Interference
Characteristics Of Antennas That Contribute To Tag Readability
RFID SyCommunication methods
19. 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
Foil Stamping
RFID Printer
Linear Polarized Reader Antenna
Memory
20. 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
Annunciator
Memory
Coupling Element
Antenna Footprint
21. 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.
Modulation Circuitry
RFID SyCommunication methods
Coupling Element
Creating A Tag
22. Pattern(Footprint) - Power/Attenuation - and Polarization
Sensor
Characteristics Of Antennas That Contribute To Tag Readability
Effective Radiated Power (ERP)
Microwave Frequency
23. Receives signal from reader and radiates a response back to the reader - LF or HF: induction coil - UHF or Microwave Frequency: printed antennas
Microprocessor
Annunciator
Slotted ALOHA
Antenna/Inductor
24. Brains of the RFID tag
Integrated Circuit Chips
Passive Communication Methods
Control Circuitry
Tag Antenna Construction
25. Reader transmits a continuous-wave RF signal into the reading environment
Actuator
Slotted ALOHA
Passive Backscatter (Capacitive Coupling)
Interactive Mode
26. 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
Microprocessor
Destructive Interference
Sensor
Low Frequency (LF)
27. Class= Functionality - - Class 0 -1 -2 -3 -4 & 5
Tag class
Reader Collision
Transmitter
Constructive Interference
28. controls the internal functions under the command of the processor
Read range
Control Circuitry
Linear Polarized Antenna
RFID Printer
29. Mount the tiny chip to a strap - Greater handling ability - Possibility to use very small chips - Possibility of higher volume production - Fluidic Self Assembly
Screen Printing
Slotted ALOHA
Strap-to-Tag
Microwave Frequency
30. Optical and RFID hybrid
ALOHA
Processor
Reader Antenna
Smart Label
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.
Duty Cycle
Flip-chip (Chip-to-Tag)
Reader Antenna
Polarization
32. 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
Polarization
Tag Generations
Passive Backscatter (Capacitive Coupling)
33. Serves as writable or non-writable data storage
Memory
Reader Antennas
Tag Standards
Effective Radiated Power (ERP)
34. 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
Actuator
PLC
Modulation Circuitry
RFID Reader
35. 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
Types of tags
Transmitter
Low Frequency (LF)
Adaptive Binary Tree Anti-Collision
36. 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)
Passive Communication Methods
RFID Reader
Low Frequency (LF)
Circular Polarized Antenna
37. IC Chip - Antenna/Inductor - Power Source
Main Components of RFID Tag
Tag Standards
Coupling Element
Actuator
38. Smart cards - smart label - etc.
Types of tags
Flip-chip (Chip-to-Tag)
RFID Reader
Actuator
39. 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
Constructive Interference
Power Source
Copper Etching
Integrated Circuit Chips
40. Tags collide completely or not at all (Theoretically proven maximum utilization= 36.8%)
Slotted ALOHA
Inductive Coupling
Polarization
Destructive Interference
41. Divides time into discrete time intervals (slots) . A packet can only be transmitted at the beginning of a slot - reduces the collision duration.
Autonomous Mode
Slotted ALOHA
Pattern(Footprint)
ALOHA
42. These are categorized into Aloha based protocols and tree based
Microwave Frequency
Memory
Equivalent Isotropic Radiated Power (EIRP)
Tag Anti-Collision Protocols
43. Low Frequency(LF) - High Frequency(HF) - Ultra high frequency (UHF) and Microwave frequency
Types of Tag Frequencies
Tag List
Serial Reader
Polarization
44. Continuous web - no adhesive
Dry Inlay
Strap-to-Tag
Control Circuitry
Passive Backscatter (Capacitive Coupling)
45. 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
Transmitter
Reader Antennas
Actuator
PLC
46. Readability of a tag greatly depends on this and the angle at which the tag is presented to the reader
Polarization
Duty Cycle
Pattern(Footprint)
Dry Inlay
47. Similar to guessing a number made of 1's and 0's by guessing each number one at a time
Adaptive Binary Tree Anti-Collision
Pattern(Footprint)
Attenuator
Multipath
48. When two waves (out of phase) impose on each other and the original signal is cancelled. Nulls are created s a result
Commissioning The Tag
PLC
Flip-chip (Chip-to-Tag)
Destructive Interference
49. The time during which a reader can emit RF energy to read tags
Agile Reader
Tag Generations
Coupling Element
Duty Cycle
50. 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
Tag Generations
Antenna/Inductor
Tag Standards