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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. Also called an 'interrogator' - A device that can read from and write data to compatible RFID tags - Also doubles up as a writer
Stationary Reader
Copper Etching
RFID Reader
Types of Tag Frequencies
2. Used for storing data such as the reader configuration parameters and a list of tag reads
Copper Etching
Sensor
Memory
UHF
3. Inductive coupling and passive backscatter (capacitive coupling)
Memory
Reader Antenna
RFID SyCommunication methods
Duty Cycle
4. When two waves (out of phase) impose on each other and the original signal is cancelled. Nulls are created s a result
Effective Radiated Power (ERP)
Low Frequency (LF)
Tag
Destructive Interference
5. Measurement of power for radiation of antenna used in Europe
Effective Radiated Power (ERP)
Equivalent Isotropic Radiated Power (EIRP)
Main Components of RFID Tag
Read range
6. 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.
Receiver
Tag Collision
Persist Time
Flip-chip (Chip-to-Tag)
7. Reader that can operate in different frequencies or can use different tag-to-reader communication protocols (generally stationary)
Memory
Pattern(Footprint)
Agile Reader
Screen Printing
8. Standards = EPC global & ISO 18000 - Different Organizations
Commissioning The Tag
Destructive Interference
RFID SyCommunication methods
Tag Standards
9. 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
Processor
Low Frequency (LF)
Stationary Reader
10. Receives signal from reader and radiates a response back to the reader - LF or HF: induction coil - UHF or Microwave Frequency: printed antennas
Antenna/Inductor
Read range
RFID Reader
Tag Generations
11. Divides time into discrete time intervals (slots) . A packet can only be transmitted at the beginning of a slot - reduces the collision duration.
Pattern(Footprint)
Slotted ALOHA
Attenuator
Screen Printing
12. changes signal received from reader to include data that will be transmitted back to the reader
Modulation Circuitry
Tag Collision
Types of tags
Attenuator
13. The act of writing the tag data by reader
Reader Antennas
Smart Label
Creating A Tag
Tag class
14. Open image in meshed screens. Conductive ink "squeezed" thru open mesh.
Screen Printing
Antenna Footprint
Passive Communication Methods
Actuator
15. 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)
Multipath
Effective Radiated Power (ERP)
Duty Cycle
16. In this mode - reader continuously reads tags in its read zone
Antenna/Inductor
Autonomous Mode
UHF
Coupling Element
17. Similar to guessing a number made of 1's and 0's by guessing each number one at a time
Smart Label
Adaptive Binary Tree Anti-Collision
Foil Stamping
ALOHA
18. When two waves (in phase) impose on each other and enhance the original signal and give rise to protrusions
Constructive Interference
Pattern(Footprint)
Commissioning The Tag
Types of Tag Frequencies
19. Die-cut web adhesive - paper face
Tag
Effective Radiated Power (ERP)
Multipath
Tag class
20. In this this antenna type - the RF waves emanate in a linear pattern from the antenna. Waves have only one energy field
Reader Antennas
Slotted ALOHA
Integrated Circuit Chips
Linear Polarized Antenna
21. Interprets the signal received from reader and controls memory storage and retrieval
Creating A Tag
Processor
Duty Cycle
Pattern(Footprint)
22. 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
Interactive Mode
Microwave Frequency
Serial Reader
Read range
23. These are categorized into Aloha based protocols and tree based
Tag Anti-Collision Protocols
Coupling Element
Slotted ALOHA
Power/Attenuation
24. The orientation of the transmitted electromagnetic field or the direction of oscillation of electromagnetically emitted waves
Microwave Frequency
Processor
Polarization
Agile Reader
25. Brains of the RFID tag
Circular Polarized Antenna
Integrated Circuit Chips
Foil Stamping
Modulation Circuitry
26. 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
Pattern(Footprint)
Polarization
Attenuator
27. Measurement of power for radiation of antenna used in US
Serial Reader
Duty Cycle
Equivalent Isotropic Radiated Power (EIRP)
Memory
28. The reflection of reader antenna signals on RF-opaque causes this
Multipath
Low Frequency (LF)
PLC
Actuator
29. Reader transmits a continuous-wave RF signal into the reading environment
Destructive Interference
ALOHA
Passive Backscatter (Capacitive Coupling)
Microprocessor
30. 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
Persist Time
RFID Printer
Stationary Reader
Circular Polarized Reader Antenna
31. 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
Decommissioning The Tag
UHF
Destructive Interference
Reader Collision
32. Low Frequency(LF) - High Frequency(HF) - Ultra high frequency (UHF) and Microwave frequency
Inductive Coupling
ALOHA
Microprocessor
Types of Tag Frequencies
33. The time during which a reader can emit RF energy to read tags
Low Frequency (LF)
Effective Radiated Power (ERP)
Sensor
Duty Cycle
34. Die-cut web with adhesive - film face
Wet Inlay
Constructive Interference
Smart Label
Modulation Circuitry
35. Readability of a tag greatly depends on this and the angle at which the tag is presented to the reader
Polarization
Screen Printing
Modulation Circuitry
Creating A Tag
36. Optical and RFID hybrid
Reader Collision
Modulation Circuitry
Smart Label
Circular Polarized Antenna
37. UHF and microwave passive tags
Linear Polarized Antenna
Tag Anti-Collision Protocols
Passive Backscatter (Capacitive Coupling)
Effective Radiated Power (ERP)
38. Generation= Timeline of Introduction - Gen 1 & 2 - Gen 2 protocol backward compatible
Tag Anti-Collision Protocols
Creating A Tag
Tag Generations
Main Components of RFID Tag
39. controls the internal functions under the command of the processor
Control Circuitry
RFID SyCommunication methods
Duty Cycle
Dry Inlay
40. Neighboring readers interrogate a tag simultaneously (can be easily solved because they can detect this and communicate to each other)
Duty Cycle
Types of Tag Frequencies
Reader Collision
Linear Polarized Antenna
41. 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.
UHF
Processor
Creating A Tag
Coupling Element
42. A mechanical device for controlling or moving objects - A programmable logic controller (PLC) - robot arm - mechanical arm - etc.
Circular Polarized Reader Antenna
Actuator
Multipath
Memory
43. Die used to "stamp" out the shape of antenna. Take up roller rolls the unused material into waste roll.
Characteristics Of Antennas That Contribute To Tag Readability
Foil Stamping
Attenuator
Types of tags
44. Continuous web - no adhesive
Agile Reader
Wet Inlay
RFID SyCommunication methods
Dry Inlay
45. 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
Types of tags
Reader Antennas
Duty Cycle
46. An electronic signal or indicator - Audible alarms - strobes - light stacks - etc.
Commissioning The Tag
Annunciator
Serial Reader
Adaptive Binary Tree Anti-Collision
47. Responsible for implementing the reader protocol to communicate with compatible tags
Tag Standards
Microprocessor
Copper Etching
RFID Reader
48. 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%)
Processor
Actuator
ALOHA
Pattern(Footprint)
49. 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
Stationary Reader
Passive Communication Methods
Linear Polarized Reader Antenna
Power Source
50. Every time a tag is read - it is saved to this
Low Frequency (LF)
Tag List
Effective Radiated Power (ERP)
Slotted ALOHA