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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. Reader transmits a continuous-wave RF signal into the reading environment
RFID Printer
Stationary Reader
Passive Backscatter (Capacitive Coupling)
Tag List
2. 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.
Dry Inlay
Power/Attenuation
Flip-chip (Chip-to-Tag)
Wet Inlay
3. Open image in meshed screens. Conductive ink "squeezed" thru open mesh.
Copper Etching
Screen Printing
RFID Reader
Multipath
4. IC Chip - Antenna/Inductor - Power Source
Characteristics Of Antennas That Contribute To Tag Readability
Main Components of RFID Tag
Linear Polarized Reader Antenna
Decommissioning The Tag
5. Mount the tiny chip to a strap - Greater handling ability - Possibility to use very small chips - Possibility of higher volume production - Fluidic Self Assembly
Agile Reader
Strap-to-Tag
Multipath
Memory
6. Continuous web - no adhesive
Multipath
Power/Attenuation
Dry Inlay
Tag
7. UHF and microwave passive tags
Characteristics Of Antennas That Contribute To Tag Readability
Tag class
Passive Backscatter (Capacitive Coupling)
UHF
8. Measurement of power for radiation of antenna used in US
Copper Etching
Tag Generations
Destructive Interference
Equivalent Isotropic Radiated Power (EIRP)
9. 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
Wet Inlay
Polarization
Decommissioning The Tag
10. Can reduce power by placing this device in the transmission line. As a result - the antennas signal is reduced and the read range diminished. Proves useful in situations where the read zone needs to be constrained as a part of system requirements so
Foil Stamping
Attenuator
Constructive Interference
Modulation Circuitry
11. 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
Memory
Types of tags
Tag
12. Proximity systems (low range -mm) medium range (cm) and long range (m)
Read range
Wet Inlay
Adaptive Binary Tree Anti-Collision
Processor
13. 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)
Adaptive Binary Tree Anti-Collision
ALOHA
Antenna/Inductor
14. A mechanical device for controlling or moving objects - A programmable logic controller (PLC) - robot arm - mechanical arm - etc.
Antenna/Inductor
Reader Collision
Actuator
ALOHA
15. Image "burned" into photopolymer layer. All copper removed except where image was burned. Copper antenna goes through additional processes to protect from oxidation
Microwave Frequency
Passive Communication Methods
Copper Etching
Attenuator
16. 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
Commissioning The Tag
Receiver
Stationary Reader
17. The act of writing the tag data by reader
Attenuator
Memory
Processor
Creating A Tag
18. 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
Antenna Footprint
Circular Polarized Reader Antenna
Inductive Coupling
Effective Radiated Power (ERP)
19. Used to transmit AC power and the clock cycle via its antennas to the tags in its read zone
Adaptive Binary Tree Anti-Collision
Transmitter
Integrated Circuit Chips
Dry Inlay
20. 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
Tag List
Decommissioning The Tag
ALOHA
21. 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
Interactive Mode
Multipath
Passive Backscatter (Capacitive Coupling)
22. Interprets the signal received from reader and controls memory storage and retrieval
Nulls(Voids)
RFID Reader
Duty Cycle
Processor
23. Serves as writable or non-writable data storage
Strap-to-Tag
Screen Printing
Memory
Transmitter
24. 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
Polarization
Power/Attenuation
Memory
Transmitter
25. More than one tag tries to respond to a reader at the same time.
Tag Collision
RFID Reader
Destructive Interference
Serial Reader
26. When two waves (out of phase) impose on each other and the original signal is cancelled. Nulls are created s a result
UHF
Destructive Interference
Polarization
Control Circuitry
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
Inductive Coupling
Reader Antenna
Tag Generations
Effective Radiated Power (ERP)
28. controls the internal functions under the command of the processor
Control Circuitry
Inductive Coupling
Copper Etching
Duty Cycle
29. '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
Linear Polarized Antenna
Destructive Interference
Duty Cycle
30. Process of creating a tag and uniquely associating it with an object
Foil Stamping
Processor
RFID Reader
Commissioning The 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
Passive Communication Methods
RFID Printer
Antenna/Inductor
Tag List
32. In this this antenna type - the RF waves emanate in a linear pattern from the antenna. Waves have only one energy field
Processor
Main Components of RFID Tag
Linear Polarized Antenna
Annunciator
33. To disassociate the tag from a tagged object and optionally destroy it
Stationary Reader
PLC
Power/Attenuation
Decommissioning The Tag
34. Optical and RFID hybrid
Destructive Interference
Smart Label
Constructive Interference
Receiver
35. The orientation of the transmitted electromagnetic field or the direction of oscillation of electromagnetically emitted waves
Microprocessor
Transmitter
Polarization
Slotted ALOHA
36. Divides time into discrete time intervals (slots) . A packet can only be transmitted at the beginning of a slot - reduces the collision duration.
Destructive Interference
RFID SyCommunication methods
Duty Cycle
Slotted ALOHA
37. Class= Functionality - - Class 0 -1 -2 -3 -4 & 5
Types of Tag Frequencies
Polarization
Tag class
Processor
38. Standards = EPC global & ISO 18000 - Different Organizations
Tag Standards
Wet Inlay
Foil Stamping
Pattern(Footprint)
39. Similar to guessing a number made of 1's and 0's by guessing each number one at a time
Dry Inlay
Slotted ALOHA
RFID SyCommunication methods
Adaptive Binary Tree Anti-Collision
40. Inductive coupling and passive backscatter (capacitive coupling)
Creating A Tag
Circular Polarized Antenna
Passive Communication Methods
Tag List
41. Readability of a tag greatly depends on this and the angle at which the tag is presented to the reader
Polarization
RFID Reader
Reader Collision
Passive Backscatter (Capacitive Coupling)
42. Also called an 'interrogator' - A device that can read from and write data to compatible RFID tags - Also doubles up as a writer
Smart Label
Types of Tag Frequencies
Slotted ALOHA
RFID Reader
43. 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.
Destructive Interference
Read range
Coupling Element
Memory
44. 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)
Power Source
Circular Polarized Antenna
Screen Printing
Interactive Mode
45. 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
Multipath
Tag Collision
Effective Radiated Power (ERP)
46. 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
Interactive Mode
Linear Polarized Reader Antenna
Commissioning The Tag
Types of Tag Frequencies
47. Brains of the RFID tag
UHF
Copper Etching
Integrated Circuit Chips
Processor
48. In this mode - reader continuously reads tags in its read zone
RFID Printer
Creating A Tag
Autonomous Mode
Passive Backscatter (Capacitive Coupling)
49. An electronic signal or indicator - Audible alarms - strobes - light stacks - etc.
Dry Inlay
Annunciator
Constructive Interference
Destructive Interference
50. 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
Tag Antenna Construction
Dry Inlay
Persist Time