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Test your basic knowledge |
RFID Technology
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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. In this this antenna type - the RF waves emanate in a linear pattern from the antenna. Waves have only one energy field
Agile Reader
Linear Polarized Antenna
Passive Communication Methods
Creating A Tag
2. The act of writing the tag data by reader
Nulls(Voids)
Stationary Reader
Creating A Tag
Screen Printing
3. Inductive coupling and passive backscatter (capacitive coupling)
RFID SyCommunication methods
Tag List
Decommissioning The Tag
Coupling Element
4. 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 class
Tag Anti-Collision Protocols
Coupling Element
Attenuator
5. Every time a tag is read - it is saved to this
Memory
Slotted ALOHA
Tag List
Nulls(Voids)
6. The 3D energy field generated by the antenna (also called reading area)
Linear Polarized Antenna
Circular Polarized Antenna
Persist Time
Pattern(Footprint)
7. Measurement of power for radiation of antenna used in US
RFID SyCommunication methods
Equivalent Isotropic Radiated Power (EIRP)
Tag
Reader Antenna
8. Dead zones that surround protrusions in antenna footprint
Memory
Linear Polarized Antenna
Transmitter
Nulls(Voids)
9. When two waves (in phase) impose on each other and enhance the original signal and give rise to protrusions
Reader Antenna
Constructive Interference
Screen Printing
Transmitter
10. These are categorized into Aloha based protocols and tree based
Tag Anti-Collision Protocols
Tag class
Antenna Footprint
Types of Tag Frequencies
11. Die-cut web adhesive - paper face
Annunciator
Nulls(Voids)
Coupling Element
Tag
12. Time for an associated tag to be read
ALOHA
Power Source
RFID Reader
Persist Time
13. Readability of a tag greatly depends on this and the angle at which the tag is presented to the reader
Tag Antenna Construction
Screen Printing
RFID SyCommunication methods
Polarization
14. changes signal received from reader to include data that will be transmitted back to the reader
Passive Backscatter (Capacitive Coupling)
Reader Collision
Dry Inlay
Modulation Circuitry
15. Measurement of power for radiation of antenna used in Europe
Effective Radiated Power (ERP)
Antenna Footprint
Foil Stamping
Dry Inlay
16. UHF and microwave passive tags
Slotted ALOHA
Memory
Memory
Passive Backscatter (Capacitive Coupling)
17. 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.
Actuator
Transmitter
Flip-chip (Chip-to-Tag)
Control Circuitry
18. The orientation of the transmitted electromagnetic field or the direction of oscillation of electromagnetically emitted waves
Polarization
Types of tags
Wet Inlay
Nulls(Voids)
19. Standards = EPC global & ISO 18000 - Different Organizations
Multipath
Slotted ALOHA
Characteristics Of Antennas That Contribute To Tag Readability
Tag Standards
20. Responsible for implementing the reader protocol to communicate with compatible tags
Microprocessor
Actuator
Circular Polarized Antenna
Creating A Tag
21. Reader transmits a continuous-wave RF signal into the reading environment
Multipath
Nulls(Voids)
Passive Backscatter (Capacitive Coupling)
Passive Communication Methods
22. Inductive coupling and passive backscatter (capacitive coupling)
Power Source
Passive Communication Methods
Nulls(Voids)
Autonomous Mode
23. 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
Duty Cycle
Actuator
RFID Printer
Integrated Circuit Chips
24. Generation= Timeline of Introduction - Gen 1 & 2 - Gen 2 protocol backward compatible
Passive Backscatter (Capacitive Coupling)
Tag Generations
Autonomous Mode
Passive Backscatter (Capacitive Coupling)
25. 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
Microprocessor
Power Source
Actuator
Processor
26. Process of creating a tag and uniquely associating it with an object
Passive Backscatter (Capacitive Coupling)
Tag Antenna Construction
Duty Cycle
Commissioning The Tag
27. 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
Receiver
Autonomous Mode
Control Circuitry
28. Serves as writable or non-writable data storage
Tag Antenna Construction
Memory
Processor
Reader Antenna
29. Brains of the RFID tag
Decommissioning The Tag
Memory
Linear Polarized Antenna
Integrated Circuit Chips
30. 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
Reader Antenna
Creating A Tag
Autonomous Mode
PLC
31. 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
Processor
Types of Tag Frequencies
Coupling Element
ALOHA
32. Tags collide completely or not at all (Theoretically proven maximum utilization= 36.8%)
Serial Reader
Passive Backscatter (Capacitive Coupling)
Agile Reader
Slotted ALOHA
33. A mechanical device for controlling or moving objects - A programmable logic controller (PLC) - robot arm - mechanical arm - etc.
Passive Communication Methods
Actuator
Types of tags
Coupling Element
34. Die-cut web with adhesive - film face
Autonomous Mode
Flip-chip (Chip-to-Tag)
Tag Antenna Construction
Wet Inlay
35. Interprets the signal received from reader and controls memory storage and retrieval
Screen Printing
Attenuator
Persist Time
Processor
36. 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
ALOHA
Antenna Footprint
Interactive Mode
Actuator
37. Used for storing data such as the reader configuration parameters and a list of tag reads
Memory
Main Components of RFID Tag
Low Frequency (LF)
Screen Printing
38. 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
Flip-chip (Chip-to-Tag)
Integrated Circuit Chips
UHF
Copper Etching
39. Die used to "stamp" out the shape of antenna. Take up roller rolls the unused material into waste roll.
Autonomous Mode
Integrated Circuit Chips
Tag Generations
Foil Stamping
40. 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
Power/Attenuation
Tag Standards
Inductive Coupling
Tag Collision
41. 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
Pattern(Footprint)
Stationary Reader
Modulation Circuitry
Equivalent Isotropic Radiated Power (EIRP)
42. 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)
Tag List
Types of Tag Frequencies
Passive Backscatter (Capacitive Coupling)
43. Proximity systems (low range -mm) medium range (cm) and long range (m)
Tag class
Receiver
Characteristics Of Antennas That Contribute To Tag Readability
Read range
44. To disassociate the tag from a tagged object and optionally destroy it
Screen Printing
Decommissioning The Tag
Equivalent Isotropic Radiated Power (EIRP)
Adaptive Binary Tree Anti-Collision
45. Most sensitive component of an RFID system - Housed in enclosures for easy mounting. Look like plain - shallow boxes. - Varying placement of this is usually the easiest adjustment while troubleshooting and is vital to achieving a high read rate
Tag Anti-Collision Protocols
Reader Antennas
Creating A Tag
Coupling Element
46. Uses a serial communication link to communicate with an application - Reader is physically connected to a computer's serial port using an RS-232 or RS-485 serial connection. Both of these connections have an upper limit on the cable length that can b
Characteristics Of Antennas That Contribute To Tag Readability
RFID SyCommunication methods
Serial Reader
Tag class
47. IC Chip - Antenna/Inductor - Power Source
Slotted ALOHA
Antenna/Inductor
Main Components of RFID Tag
Reader Collision
48. Optical and RFID hybrid
Passive Backscatter (Capacitive Coupling)
Types of tags
Tag Generations
Smart Label
49. 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
Slotted ALOHA
Types of Tag Frequencies
Processor
50. 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
Read range
Polarization
PLC
Inductive Coupling
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