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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. 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.
Tag class
Flip-chip (Chip-to-Tag)
Passive Communication Methods
Polarization
2. Divides time into discrete time intervals (slots) . A packet can only be transmitted at the beginning of a slot - reduces the collision duration.
UHF
Reader Collision
Slotted ALOHA
RFID Printer
3. Smart cards - smart label - etc.
Copper Etching
Attenuator
Types of tags
RFID Reader
4. Used for storing data such as the reader configuration parameters and a list of tag reads
Tag Antenna Construction
Antenna Footprint
Screen Printing
Memory
5. 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
Circular Polarized Reader Antenna
Tag Standards
Tag Generations
Microwave Frequency
6. IC Chip - Antenna/Inductor - Power Source
Main Components of RFID Tag
Smart Label
Foil Stamping
Passive Backscatter (Capacitive Coupling)
7. Serves as writable or non-writable data storage
Tag Generations
Memory
Persist Time
Autonomous Mode
8. Why ___________ is better: Cost of printed antennas varies between 24-44% of copper antennas - Printed antennas show 93-96% radiation efficiency compared to copper antennas...
Destructive Interference
Tag Antenna Construction
PLC
Polarization
9. Responsible for implementing the reader protocol to communicate with compatible tags
Microprocessor
Memory
Multipath
Linear Polarized Reader Antenna
10. 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
Power Source
UHF
Nulls(Voids)
Attenuator
11. The orientation of the transmitted electromagnetic field or the direction of oscillation of electromagnetically emitted waves
Duty Cycle
Persist Time
Polarization
Processor
12. Measurement of power for radiation of antenna used in Europe
Multipath
Flip-chip (Chip-to-Tag)
Inductive Coupling
Effective Radiated Power (ERP)
13. Readability of a tag greatly depends on this and the angle at which the tag is presented to the reader
Processor
Slotted ALOHA
Power/Attenuation
Polarization
14. In this mode - reader continuously reads tags in its read zone
Autonomous Mode
Multipath
RFID Printer
Tag Standards
15. Reader that can operate in different frequencies or can use different tag-to-reader communication protocols (generally stationary)
Agile Reader
Strap-to-Tag
RFID Reader
Sensor
16. Image "burned" into photopolymer layer. All copper removed except where image was burned. Copper antenna goes through additional processes to protect from oxidation
Linear Polarized Antenna
Tag Anti-Collision Protocols
Copper Etching
Passive Communication Methods
17. Standards = EPC global & ISO 18000 - Different Organizations
Receiver
Autonomous Mode
Tag Standards
Creating A Tag
18. A mechanical device for controlling or moving objects - A programmable logic controller (PLC) - robot arm - mechanical arm - etc.
Modulation Circuitry
Interactive Mode
Commissioning The Tag
Actuator
19. An electronic signal or indicator - Audible alarms - strobes - light stacks - etc.
Annunciator
Flip-chip (Chip-to-Tag)
Stationary Reader
Microwave Frequency
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
Antenna Footprint
Tag List
Actuator
Memory
21. More than one tag tries to respond to a reader at the same time.
Tag Collision
Tag class
Passive Backscatter (Capacitive Coupling)
Commissioning The Tag
22. The time during which a reader can emit RF energy to read tags
Slotted ALOHA
PLC
Duty Cycle
Tag Standards
23. 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
Attenuator
Tag List
ALOHA
Passive Backscatter (Capacitive Coupling)
24. 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
Antenna Footprint
Interactive Mode
PLC
Polarization
25. Interprets the signal received from reader and controls memory storage and retrieval
Main Components of RFID Tag
Processor
Destructive Interference
Linear Polarized Reader Antenna
26. Brains of the RFID tag
Interactive Mode
Screen Printing
Types of Tag Frequencies
Integrated Circuit Chips
27. Reader transmits a continuous-wave RF signal into the reading environment
Interactive Mode
PLC
Passive Backscatter (Capacitive Coupling)
Tag Standards
28. Continuous web - no adhesive
Main Components of RFID Tag
Transmitter
Decommissioning The Tag
Dry Inlay
29. When two waves (out of phase) impose on each other and the original signal is cancelled. Nulls are created s a result
Dry Inlay
Types of Tag Frequencies
Destructive Interference
Agile Reader
30. Receives signal from reader and radiates a response back to the reader - LF or HF: induction coil - UHF or Microwave Frequency: printed antennas
Equivalent Isotropic Radiated Power (EIRP)
Memory
Antenna/Inductor
Screen Printing
31. 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
Flip-chip (Chip-to-Tag)
Linear Polarized Reader Antenna
Dry Inlay
Serial Reader
32. The 3D energy field generated by the antenna (also called reading area)
UHF
Pattern(Footprint)
Adaptive Binary Tree Anti-Collision
RFID Reader
33. Inductive coupling and passive backscatter (capacitive coupling)
Read range
Control Circuitry
RFID SyCommunication methods
Effective Radiated Power (ERP)
34. 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
PLC
Reader Collision
UHF
Passive Communication Methods
35. Time for an associated tag to be read
Persist Time
Linear Polarized Reader Antenna
Foil Stamping
Integrated Circuit Chips
36. 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
Control Circuitry
Persist Time
Stationary Reader
37. 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
Antenna/Inductor
RFID Reader
Destructive Interference
Inductive Coupling
38. controls the internal functions under the command of the processor
Attenuator
RFID Reader
Microwave Frequency
Control Circuitry
39. The reflection of reader antenna signals on RF-opaque causes this
Types of Tag Frequencies
Read range
Power/Attenuation
Multipath
40. When two waves (in phase) impose on each other and enhance the original signal and give rise to protrusions
Constructive Interference
Serial Reader
Pattern(Footprint)
Integrated Circuit Chips
41. Die-cut web adhesive - paper face
Reader Antenna
Tag
Passive Communication Methods
Transmitter
42. 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)
Destructive Interference
Circular Polarized Antenna
Types of Tag Frequencies
Passive Communication Methods
43. 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
Linear Polarized Reader Antenna
ALOHA
Foil Stamping
Polarization
44. 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
Effective Radiated Power (ERP)
Modulation Circuitry
Memory
Stationary Reader
45. In this this antenna type - the RF waves emanate in a linear pattern from the antenna. Waves have only one energy field
Destructive Interference
Strap-to-Tag
Linear Polarized Antenna
RFID Printer
46. Die-cut web with adhesive - film face
Linear Polarized Reader Antenna
RFID Reader
Tag class
Wet Inlay
47. 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
Interactive Mode
Screen Printing
Characteristics Of Antennas That Contribute To Tag Readability
48. 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.
Duty Cycle
Coupling Element
Power Source
Low Frequency (LF)
49. Similar to guessing a number made of 1's and 0's by guessing each number one at a time
Modulation Circuitry
Adaptive Binary Tree Anti-Collision
Tag List
Control Circuitry
50. Dead zones that surround protrusions in antenna footprint
Nulls(Voids)
Reader Antennas
Screen Printing
Power/Attenuation