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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. Similar to guessing a number made of 1's and 0's by guessing each number one at a time
Reader Antenna
Adaptive Binary Tree Anti-Collision
Linear Polarized Reader Antenna
Sensor
2. Also called an 'interrogator' - A device that can read from and write data to compatible RFID tags - Also doubles up as a writer
Characteristics Of Antennas That Contribute To Tag Readability
RFID Reader
Reader Antennas
Strap-to-Tag
3. Continuous web - no adhesive
Dry Inlay
Receiver
Slotted ALOHA
Attenuator
4. When two waves (in phase) impose on each other and enhance the original signal and give rise to protrusions
Creating A Tag
Effective Radiated Power (ERP)
ALOHA
Constructive Interference
5. The 3D energy field generated by the antenna (also called reading area)
Linear Polarized Antenna
Antenna/Inductor
Flip-chip (Chip-to-Tag)
Pattern(Footprint)
6. Class= Functionality - - Class 0 -1 -2 -3 -4 & 5
Slotted ALOHA
Sensor
Tag class
RFID Reader
7. 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.
Flip-chip (Chip-to-Tag)
Foil Stamping
Copper Etching
RFID SyCommunication methods
8. Time for an associated tag to be read
Persist Time
Integrated Circuit Chips
Equivalent Isotropic Radiated Power (EIRP)
Linear Polarized Reader Antenna
9. UHF and microwave passive tags
Slotted ALOHA
Read range
Duty Cycle
Passive Backscatter (Capacitive Coupling)
10. When two waves (out of phase) impose on each other and the original signal is cancelled. Nulls are created s a result
Smart Label
Destructive Interference
Microprocessor
Integrated Circuit Chips
11. 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)
Modulation Circuitry
Decommissioning The Tag
Reader Antenna
Circular Polarized Antenna
12. Pattern(Footprint) - Power/Attenuation - and Polarization
Characteristics Of Antennas That Contribute To Tag Readability
Circular Polarized Antenna
RFID Reader
Types of Tag Frequencies
13. Smart cards - smart label - etc.
Types of tags
Wet Inlay
Interactive Mode
RFID Reader
14. 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
Circular Polarized Antenna
Antenna Footprint
Main Components of RFID Tag
RFID Reader
15. Inductive coupling and passive backscatter (capacitive coupling)
Passive Communication Methods
Annunciator
Autonomous Mode
Passive Backscatter (Capacitive Coupling)
16. 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.
Tag List
Tag Collision
Tag
Coupling Element
17. changes signal received from reader to include data that will be transmitted back to the reader
Screen Printing
Nulls(Voids)
Modulation Circuitry
Passive Backscatter (Capacitive Coupling)
18. Measurement of power for radiation of antenna used in Europe
UHF
Linear Polarized Antenna
Microprocessor
Effective Radiated Power (ERP)
19. IC Chip - Antenna/Inductor - Power Source
Microprocessor
Main Components of RFID Tag
Destructive Interference
RFID Reader
20. Tags collide completely or not at all (Theoretically proven maximum utilization= 36.8%)
Equivalent Isotropic Radiated Power (EIRP)
Autonomous Mode
Polarization
Slotted ALOHA
21. Responsible for implementing the reader protocol to communicate with compatible tags
Microprocessor
Types of Tag Frequencies
Types of tags
Strap-to-Tag
22. Process of creating a tag and uniquely associating it with an object
Nulls(Voids)
Reader Collision
Commissioning The Tag
Screen Printing
23. 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
ALOHA
Serial Reader
Effective Radiated Power (ERP)
24. Divides time into discrete time intervals (slots) . A packet can only be transmitted at the beginning of a slot - reduces the collision duration.
Slotted ALOHA
Commissioning The Tag
Circular Polarized Reader Antenna
Tag class
25. Reader that can operate in different frequencies or can use different tag-to-reader communication protocols (generally stationary)
Polarization
Agile Reader
Creating A Tag
Tag Antenna Construction
26. The orientation of the transmitted electromagnetic field or the direction of oscillation of electromagnetically emitted waves
Antenna/Inductor
Slotted ALOHA
UHF
Polarization
27. Image "burned" into photopolymer layer. All copper removed except where image was burned. Copper antenna goes through additional processes to protect from oxidation
Antenna/Inductor
PLC
Copper Etching
RFID Printer
28. 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%)
Tag Generations
Decommissioning The Tag
Wet Inlay
ALOHA
29. Readability of a tag greatly depends on this and the angle at which the tag is presented to the reader
Polarization
Passive Communication Methods
Types of Tag Frequencies
Reader Antennas
30. 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
RFID Printer
Linear Polarized Reader Antenna
Adaptive Binary Tree Anti-Collision
Creating A Tag
31. Receives signal from reader and radiates a response back to the reader - LF or HF: induction coil - UHF or Microwave Frequency: printed antennas
Circular Polarized Reader Antenna
Memory
RFID Reader
Antenna/Inductor
32. To disassociate the tag from a tagged object and optionally destroy it
Coupling Element
Decommissioning The Tag
Commissioning The Tag
Linear Polarized Antenna
33. 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
UHF
Circular Polarized Reader Antenna
Antenna Footprint
Linear Polarized Antenna
34. Interprets the signal received from reader and controls memory storage and retrieval
Processor
Sensor
Commissioning The Tag
Read range
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
RFID Reader
Types of tags
Low Frequency (LF)
Polarization
36. controls the internal functions under the command of the processor
Passive Backscatter (Capacitive Coupling)
ALOHA
Control Circuitry
Inductive Coupling
37. 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
Interactive Mode
Coupling Element
RFID Reader
38. In this this antenna type - the RF waves emanate in a linear pattern from the antenna. Waves have only one energy field
Copper Etching
Linear Polarized Antenna
Linear Polarized Reader Antenna
Control Circuitry
39. These are categorized into Aloha based protocols and tree based
Passive Backscatter (Capacitive Coupling)
Foil Stamping
Tag Anti-Collision Protocols
Commissioning The Tag
40. Die-cut web with adhesive - film face
RFID SyCommunication methods
Adaptive Binary Tree Anti-Collision
Wet Inlay
Power/Attenuation
41. 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
Transmitter
Tag Anti-Collision Protocols
Circular Polarized Antenna
42. 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
Passive Backscatter (Capacitive Coupling)
Antenna Footprint
Sensor
43. Inductive coupling and passive backscatter (capacitive coupling)
Tag Anti-Collision Protocols
Antenna Footprint
RFID SyCommunication methods
ALOHA
44. Used to transmit AC power and the clock cycle via its antennas to the tags in its read zone
Characteristics Of Antennas That Contribute To Tag Readability
Receiver
Transmitter
Passive Backscatter (Capacitive Coupling)
45. 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...
Linear Polarized Antenna
Tag Antenna Construction
Receiver
Transmitter
46. Serves as writable or non-writable data storage
Nulls(Voids)
Slotted ALOHA
Circular Polarized Reader Antenna
Memory
47. Generation= Timeline of Introduction - Gen 1 & 2 - Gen 2 protocol backward compatible
Adaptive Binary Tree Anti-Collision
Multipath
Tag Generations
Autonomous Mode
48. The act of writing the tag data by reader
Tag List
Creating A Tag
Interactive Mode
Transmitter
49. Optical and RFID hybrid
Autonomous Mode
Smart Label
Linear Polarized Antenna
Flip-chip (Chip-to-Tag)
50. 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
Tag class
Tag Generations
Decommissioning The Tag
PLC