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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. IC Chip - Antenna/Inductor - Power Source
Multipath
Main Components of RFID Tag
Reader Collision
RFID SyCommunication methods
2. Open image in meshed screens. Conductive ink "squeezed" thru open mesh.
Effective Radiated Power (ERP)
Copper Etching
Screen Printing
PLC
3. Process of creating a tag and uniquely associating it with an object
Tag Antenna Construction
Circular Polarized Antenna
Commissioning The Tag
Sensor
4. 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
Circular Polarized Reader Antenna
Linear Polarized Reader Antenna
Microprocessor
RFID SyCommunication methods
5. When two waves (out of phase) impose on each other and the original signal is cancelled. Nulls are created s a result
Main Components of RFID Tag
Coupling Element
Destructive Interference
Effective Radiated Power (ERP)
6. Used for storing data such as the reader configuration parameters and a list of tag reads
Memory
Passive Backscatter (Capacitive Coupling)
Modulation Circuitry
Effective Radiated Power (ERP)
7. Reader that can operate in different frequencies or can use different tag-to-reader communication protocols (generally stationary)
Equivalent Isotropic Radiated Power (EIRP)
Pattern(Footprint)
Commissioning The Tag
Agile Reader
8. The reflection of reader antenna signals on RF-opaque causes this
Passive Communication Methods
Multipath
Nulls(Voids)
Commissioning The Tag
9. Similar to guessing a number made of 1's and 0's by guessing each number one at a time
Receiver
Adaptive Binary Tree Anti-Collision
Slotted ALOHA
Reader Antenna
10. 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
Tag
Interactive Mode
Screen Printing
Polarization
11. Die used to "stamp" out the shape of antenna. Take up roller rolls the unused material into waste roll.
Foil Stamping
Smart Label
Types of tags
Constructive Interference
12. Readability of a tag greatly depends on this and the angle at which the tag is presented to the reader
Decommissioning The Tag
Tag Collision
Constructive Interference
Polarization
13. The 3D energy field generated by the antenna (also called reading area)
ALOHA
Polarization
PLC
Pattern(Footprint)
14. controls the internal functions under the command of the processor
Control Circuitry
Commissioning The Tag
Slotted ALOHA
Tag Generations
15. Die-cut web with adhesive - film face
Wet Inlay
Integrated Circuit Chips
Transmitter
RFID Reader
16. Class= Functionality - - Class 0 -1 -2 -3 -4 & 5
Effective Radiated Power (ERP)
Tag class
Modulation Circuitry
Linear Polarized Antenna
17. Image "burned" into photopolymer layer. All copper removed except where image was burned. Copper antenna goes through additional processes to protect from oxidation
Interactive Mode
Dry Inlay
Copper Etching
Microwave Frequency
18. An electronic signal or indicator - Audible alarms - strobes - light stacks - etc.
Tag Generations
Microwave Frequency
Passive Backscatter (Capacitive Coupling)
Annunciator
19. 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
Reader Antenna
Commissioning The Tag
Characteristics Of Antennas That Contribute To Tag Readability
Power/Attenuation
20. In this mode - reader continuously reads tags in its read zone
Destructive Interference
Screen Printing
Autonomous Mode
RFID Reader
21. 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
Autonomous Mode
RFID Reader
Antenna/Inductor
Power Source
22. Also called an 'interrogator' - A device that can read from and write data to compatible RFID tags - Also doubles up as a writer
Dry Inlay
Coupling Element
Circular Polarized Reader Antenna
RFID Reader
23. Receives analog signals from the tag via the reader antenna
Annunciator
ALOHA
Receiver
Creating A Tag
24. The act of writing the tag data by reader
UHF
Memory
Power Source
Creating A Tag
25. Responsible for implementing the reader protocol to communicate with compatible tags
Constructive Interference
Microprocessor
PLC
Slotted ALOHA
26. Die-cut web adhesive - paper face
Circular Polarized Reader Antenna
Tag Antenna Construction
Tag
Nulls(Voids)
27. 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
Dry Inlay
Reader Antenna
Types of tags
Nulls(Voids)
28. 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
Agile Reader
Passive Backscatter (Capacitive Coupling)
RFID Reader
29. 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
Slotted ALOHA
Circular Polarized Reader Antenna
Destructive Interference
Linear Polarized Reader Antenna
30. Brains of the RFID tag
RFID Printer
ALOHA
Integrated Circuit Chips
Antenna/Inductor
31. UHF and microwave passive tags
Receiver
Reader Antenna
PLC
Passive Backscatter (Capacitive Coupling)
32. Low Frequency(LF) - High Frequency(HF) - Ultra high frequency (UHF) and Microwave frequency
Types of Tag Frequencies
Stationary Reader
Circular Polarized Reader Antenna
PLC
33. 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
Polarization
Interactive Mode
PLC
34. The time during which a reader can emit RF energy to read tags
Multipath
Polarization
Duty Cycle
Flip-chip (Chip-to-Tag)
35. 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.
Strap-to-Tag
Effective Radiated Power (ERP)
Tag
Flip-chip (Chip-to-Tag)
36. Time for an associated tag to be read
ALOHA
Circular Polarized Reader Antenna
Persist Time
Main Components of RFID Tag
37. Smart cards - smart label - etc.
Types of tags
Power/Attenuation
RFID SyCommunication methods
Agile Reader
38. 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%)
Integrated Circuit Chips
Read range
Processor
ALOHA
39. Receives signal from reader and radiates a response back to the reader - LF or HF: induction coil - UHF or Microwave Frequency: printed antennas
Slotted ALOHA
Constructive Interference
Antenna/Inductor
Wet Inlay
40. Reader transmits a continuous-wave RF signal into the reading environment
Passive Backscatter (Capacitive Coupling)
Tag Collision
Smart Label
Coupling Element
41. When two waves (in phase) impose on each other and enhance the original signal and give rise to protrusions
Constructive Interference
Integrated Circuit Chips
Pattern(Footprint)
Destructive Interference
42. 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...
Passive Communication Methods
Strap-to-Tag
Integrated Circuit Chips
Tag Antenna Construction
43. Inductive coupling and passive backscatter (capacitive coupling)
Wet Inlay
Multipath
Passive Communication Methods
Coupling Element
44. Interprets the signal received from reader and controls memory storage and retrieval
Processor
RFID Printer
Actuator
Tag Antenna Construction
45. 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
Memory
Sensor
RFID Printer
Passive Backscatter (Capacitive Coupling)
46. 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)
RFID Printer
Circular Polarized Antenna
Wet Inlay
Types of Tag Frequencies
47. 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
Circular Polarized Reader Antenna
UHF
Antenna Footprint
Annunciator
48. These are categorized into Aloha based protocols and tree based
Tag Anti-Collision Protocols
Passive Backscatter (Capacitive Coupling)
Screen Printing
Transmitter
49. 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
Inductive Coupling
Multipath
Main Components of RFID Tag
Slotted ALOHA
50. Inductive coupling and passive backscatter (capacitive coupling)
Antenna/Inductor
RFID SyCommunication methods
Sensor
Passive Backscatter (Capacitive Coupling)