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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. When two waves (in phase) impose on each other and enhance the original signal and give rise to protrusions
Interactive Mode
Reader Antenna
Power Source
Constructive Interference
2. 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
Linear Polarized Reader Antenna
Strap-to-Tag
Microprocessor
Equivalent Isotropic Radiated Power (EIRP)
3. '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
Low Frequency (LF)
Duty Cycle
RFID Reader
Read range
4. 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
Creating A Tag
Power/Attenuation
Antenna Footprint
5. Used to transmit AC power and the clock cycle via its antennas to the tags in its read zone
RFID Reader
Multipath
Tag Generations
Transmitter
6. 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.
Read range
Flip-chip (Chip-to-Tag)
Agile Reader
Passive Backscatter (Capacitive Coupling)
7. changes signal received from reader to include data that will be transmitted back to the reader
Copper Etching
Microwave Frequency
Modulation Circuitry
Linear Polarized Antenna
8. Dead zones that surround protrusions in antenna footprint
Nulls(Voids)
Creating A Tag
Reader Antennas
Foil Stamping
9. 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
Foil Stamping
Tag Anti-Collision Protocols
Power/Attenuation
Tag Collision
10. In this this antenna type - the RF waves emanate in a linear pattern from the antenna. Waves have only one energy field
Wet Inlay
Linear Polarized Antenna
ALOHA
Strap-to-Tag
11. To disassociate the tag from a tagged object and optionally destroy it
Decommissioning The Tag
Stationary Reader
Reader Collision
Inductive Coupling
12. Used for storing data such as the reader configuration parameters and a list of tag reads
Autonomous Mode
Linear Polarized Reader Antenna
Slotted ALOHA
Memory
13. Interprets the signal received from reader and controls memory storage and retrieval
Processor
Wet Inlay
Coupling Element
Passive Communication Methods
14. Serves as writable or non-writable data storage
Commissioning The Tag
Microwave Frequency
Memory
Types of Tag Frequencies
15. Measurement of power for radiation of antenna used in US
Annunciator
Equivalent Isotropic Radiated Power (EIRP)
Types of tags
Memory
16. Receives analog signals from the tag via the reader antenna
Power/Attenuation
Receiver
ALOHA
Nulls(Voids)
17. 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...
Tag Antenna Construction
Linear Polarized Antenna
Microprocessor
Persist Time
18. The reflection of reader antenna signals on RF-opaque causes this
Multipath
Antenna Footprint
Smart Label
Slotted ALOHA
19. When two waves (out of phase) impose on each other and the original signal is cancelled. Nulls are created s a result
ALOHA
Passive Communication Methods
Nulls(Voids)
Destructive Interference
20. 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
Microwave Frequency
Dry Inlay
PLC
Multipath
21. Receives signal from reader and radiates a response back to the reader - LF or HF: induction coil - UHF or Microwave Frequency: printed antennas
Nulls(Voids)
Antenna/Inductor
Low Frequency (LF)
Coupling Element
22. Divides time into discrete time intervals (slots) . A packet can only be transmitted at the beginning of a slot - reduces the collision duration.
Read range
Slotted ALOHA
Flip-chip (Chip-to-Tag)
Reader Collision
23. Proximity systems (low range -mm) medium range (cm) and long range (m)
Tag List
Passive Backscatter (Capacitive Coupling)
Read range
Main Components of RFID Tag
24. A mechanical device for controlling or moving objects - A programmable logic controller (PLC) - robot arm - mechanical arm - etc.
Adaptive Binary Tree Anti-Collision
Passive Communication Methods
Foil Stamping
Actuator
25. UHF and microwave passive tags
Screen Printing
Passive Backscatter (Capacitive Coupling)
Pattern(Footprint)
ALOHA
26. 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
Passive Communication Methods
Attenuator
Flip-chip (Chip-to-Tag)
RFID Printer
27. Time for an associated tag to be read
Persist Time
Modulation Circuitry
Nulls(Voids)
RFID Reader
28. Die used to "stamp" out the shape of antenna. Take up roller rolls the unused material into waste roll.
Tag class
Polarization
Constructive Interference
Foil Stamping
29. 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
RFID Printer
Tag
Tag Collision
30. Reader that can operate in different frequencies or can use different tag-to-reader communication protocols (generally stationary)
Interactive Mode
Memory
Agile Reader
Receiver
31. 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)
Creating A Tag
RFID SyCommunication methods
Circular Polarized Antenna
Attenuator
32. Brains of the RFID tag
Strap-to-Tag
Integrated Circuit Chips
UHF
Passive Backscatter (Capacitive Coupling)
33. Neighboring readers interrogate a tag simultaneously (can be easily solved because they can detect this and communicate to each other)
Reader Collision
Slotted ALOHA
Antenna/Inductor
Pattern(Footprint)
34. Inductive coupling and passive backscatter (capacitive coupling)
Passive Communication Methods
Low Frequency (LF)
Decommissioning The Tag
Receiver
35. 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
Slotted ALOHA
Sensor
Tag Collision
Tag Anti-Collision Protocols
36. 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
Flip-chip (Chip-to-Tag)
Effective Radiated Power (ERP)
Antenna Footprint
Tag Antenna Construction
37. Readability of a tag greatly depends on this and the angle at which the tag is presented to the reader
RFID Reader
Tag Standards
RFID Reader
Polarization
38. In this mode - reader continuously reads tags in its read zone
Control Circuitry
Constructive Interference
Circular Polarized Reader Antenna
Autonomous Mode
39. 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
UHF
Tag Anti-Collision Protocols
Flip-chip (Chip-to-Tag)
RFID SyCommunication methods
40. Measurement of power for radiation of antenna used in Europe
Effective Radiated Power (ERP)
Autonomous Mode
ALOHA
Reader Antenna
41. The orientation of the transmitted electromagnetic field or the direction of oscillation of electromagnetically emitted waves
Polarization
Microwave Frequency
Wet Inlay
Antenna/Inductor
42. 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
Smart Label
Coupling Element
Equivalent Isotropic Radiated Power (EIRP)
43. 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
Pattern(Footprint)
Polarization
Interactive Mode
Transmitter
44. Optical and RFID hybrid
Characteristics Of Antennas That Contribute To Tag Readability
Slotted ALOHA
Actuator
Smart Label
45. Mount the tiny chip to a strap - Greater handling ability - Possibility to use very small chips - Possibility of higher volume production - Fluidic Self Assembly
Copper Etching
Strap-to-Tag
Receiver
Smart Label
46. IC Chip - Antenna/Inductor - Power Source
Linear Polarized Reader Antenna
Polarization
Destructive Interference
Main Components of RFID Tag
47. Generation= Timeline of Introduction - Gen 1 & 2 - Gen 2 protocol backward compatible
Actuator
Serial Reader
Tag Generations
Linear Polarized Reader Antenna
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.
Coupling Element
Constructive Interference
Tag Antenna Construction
Inductive Coupling
49. These are categorized into Aloha based protocols and tree based
Tag Standards
Types of tags
Tag Anti-Collision Protocols
Power/Attenuation
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
Slotted ALOHA
Memory
ALOHA
PLC