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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. RF energy radiates from antenna in circular fashion - Slightly reduced range - Provides greater tolerance to tags in various orientation and bounce off of and bypass obstructions - 2 E-field components that are equal in magnitude - 90 degrees out of
Multipath
Tag Collision
Destructive Interference
Circular Polarized Reader Antenna
2. 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)
Processor
Characteristics Of Antennas That Contribute To Tag Readability
Circular Polarized Antenna
Types of tags
3. An electronic signal or indicator - Audible alarms - strobes - light stacks - etc.
Modulation Circuitry
Foil Stamping
Annunciator
Power Source
4. Dead zones that surround protrusions in antenna footprint
RFID SyCommunication methods
Nulls(Voids)
Microprocessor
Antenna Footprint
5. Measurement of power for radiation of antenna used in Europe
Effective Radiated Power (ERP)
Copper Etching
Stationary Reader
PLC
6. 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
Foil Stamping
Reader Antennas
Inductive Coupling
7. Time for an associated tag to be read
Transmitter
RFID SyCommunication methods
Persist Time
Inductive Coupling
8. When two waves (in phase) impose on each other and enhance the original signal and give rise to protrusions
Constructive Interference
Screen Printing
Polarization
ALOHA
9. controls the internal functions under the command of the processor
Interactive Mode
Control Circuitry
Types of Tag Frequencies
Pattern(Footprint)
10. 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
Passive Backscatter (Capacitive Coupling)
Tag class
PLC
Strap-to-Tag
11. 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
Pattern(Footprint)
Linear Polarized Reader Antenna
Reader Antennas
Microprocessor
12. Serves as writable or non-writable data storage
Destructive Interference
Memory
Power Source
Autonomous Mode
13. 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.
Main Components of RFID Tag
Linear Polarized Reader Antenna
Flip-chip (Chip-to-Tag)
UHF
14. Proximity systems (low range -mm) medium range (cm) and long range (m)
Read range
Antenna/Inductor
Power Source
Tag Collision
15. Receives analog signals from the tag via the reader antenna
Receiver
Creating A Tag
Reader Antenna
Power Source
16. Measurement of power for radiation of antenna used in US
Copper Etching
Equivalent Isotropic Radiated Power (EIRP)
ALOHA
Attenuator
17. changes signal received from reader to include data that will be transmitted back to the reader
Modulation Circuitry
Circular Polarized Antenna
Nulls(Voids)
Coupling Element
18. 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
Commissioning The Tag
Sensor
RFID Printer
Reader Antenna
19. These are categorized into Aloha based protocols and tree based
RFID SyCommunication methods
Circular Polarized Reader Antenna
Creating A Tag
Tag Anti-Collision Protocols
20. 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
Serial Reader
Commissioning The Tag
Stationary Reader
RFID Printer
21. 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...
RFID SyCommunication methods
Duty Cycle
Tag Antenna Construction
Tag Anti-Collision Protocols
22. Low Frequency(LF) - High Frequency(HF) - Ultra high frequency (UHF) and Microwave frequency
Types of tags
Types of Tag Frequencies
Tag Antenna Construction
Adaptive Binary Tree Anti-Collision
23. Generation= Timeline of Introduction - Gen 1 & 2 - Gen 2 protocol backward compatible
Effective Radiated Power (ERP)
Linear Polarized Antenna
Tag Generations
Reader Antenna
24. '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
RFID Reader
UHF
Passive Communication Methods
Sensor
25. Process of creating a tag and uniquely associating it with an object
Persist Time
Slotted ALOHA
Reader Antennas
Commissioning The Tag
26. The act of writing the tag data by reader
Passive Backscatter (Capacitive Coupling)
Control Circuitry
Creating A Tag
Receiver
27. IC Chip - Antenna/Inductor - Power Source
Main Components of RFID Tag
RFID SyCommunication methods
Foil Stamping
Power Source
28. When two waves (out of phase) impose on each other and the original signal is cancelled. Nulls are created s a result
Linear Polarized Antenna
Destructive Interference
Processor
Annunciator
29. Tags collide completely or not at all (Theoretically proven maximum utilization= 36.8%)
Slotted ALOHA
Sensor
Foil Stamping
Smart Label
30. Smart cards - smart label - etc.
Stationary Reader
Integrated Circuit Chips
Types of tags
Circular Polarized Reader Antenna
31. Responsible for implementing the reader protocol to communicate with compatible tags
Inductive Coupling
Passive Backscatter (Capacitive Coupling)
Passive Backscatter (Capacitive Coupling)
Microprocessor
32. 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
Creating A Tag
Power Source
Slotted ALOHA
33. Receives signal from reader and radiates a response back to the reader - LF or HF: induction coil - UHF or Microwave Frequency: printed antennas
Tag Antenna Construction
Tag List
Characteristics Of Antennas That Contribute To Tag Readability
Antenna/Inductor
34. Pattern(Footprint) - Power/Attenuation - and Polarization
Foil Stamping
Strap-to-Tag
Antenna Footprint
Characteristics Of Antennas That Contribute To Tag Readability
35. To disassociate the tag from a tagged object and optionally destroy it
Sensor
Slotted ALOHA
Tag Generations
Decommissioning The Tag
36. More than one tag tries to respond to a reader at the same time.
Slotted ALOHA
Power/Attenuation
Tag Collision
Passive Communication Methods
37. The orientation of the transmitted electromagnetic field or the direction of oscillation of electromagnetically emitted waves
Read range
Microwave Frequency
Polarization
Coupling Element
38. 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
Power Source
PLC
Destructive Interference
39. 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
ALOHA
Nulls(Voids)
Modulation Circuitry
Antenna Footprint
40. 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
Tag Antenna Construction
Reader Antenna
Power/Attenuation
Destructive Interference
41. 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
Low Frequency (LF)
Smart Label
ALOHA
Integrated Circuit Chips
42. 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
Pattern(Footprint)
Decommissioning The Tag
Main Components of RFID Tag
43. Class= Functionality - - Class 0 -1 -2 -3 -4 & 5
Slotted ALOHA
Tag class
Coupling Element
Tag Anti-Collision Protocols
44. Every time a tag is read - it is saved to this
Autonomous Mode
Tag List
Polarization
ALOHA
45. Brains of the RFID tag
Decommissioning The Tag
RFID SyCommunication methods
Smart Label
Integrated Circuit Chips
46. The time during which a reader can emit RF energy to read tags
Sensor
Duty Cycle
Read range
Screen Printing
47. In this mode - reader continuously reads tags in its read zone
Autonomous Mode
Smart Label
Screen Printing
Agile Reader
48. 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
Circular Polarized Antenna
Power Source
Main Components of RFID Tag
Integrated Circuit Chips
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
Persist Time
ALOHA
Destructive Interference
Interactive Mode
50. Reader transmits a continuous-wave RF signal into the reading environment
Reader Antennas
Low Frequency (LF)
Passive Backscatter (Capacitive Coupling)
Circular Polarized Antenna