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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.
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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. Die-cut web adhesive - paper face
Tag
Dry Inlay
ALOHA
Inductive Coupling
2. Receives signal from reader and radiates a response back to the reader - LF or HF: induction coil - UHF or Microwave Frequency: printed antennas
Polarization
Antenna/Inductor
Effective Radiated Power (ERP)
Tag Generations
3. Used for storing data such as the reader configuration parameters and a list of tag reads
Reader Antenna
Main Components of RFID Tag
Memory
Passive Backscatter (Capacitive Coupling)
4. Proximity systems (low range -mm) medium range (cm) and long range (m)
Circular Polarized Reader Antenna
Passive Backscatter (Capacitive Coupling)
Read range
Dry Inlay
5. Smart cards - smart label - etc.
Creating A Tag
Types of tags
UHF
RFID Reader
6. 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
Inductive Coupling
Power Source
Control Circuitry
Power/Attenuation
7. IC Chip - Antenna/Inductor - Power Source
Commissioning The Tag
Autonomous Mode
Linear Polarized Reader Antenna
Main Components of RFID Tag
8. Class= Functionality - - Class 0 -1 -2 -3 -4 & 5
Reader Antenna
Tag class
Read range
RFID Printer
9. The orientation of the transmitted electromagnetic field or the direction of oscillation of electromagnetically emitted waves
Tag class
Low Frequency (LF)
Decommissioning The Tag
Polarization
10. Pattern(Footprint) - Power/Attenuation - and Polarization
Smart Label
Read range
Polarization
Characteristics Of Antennas That Contribute To Tag Readability
11. Dead zones that surround protrusions in antenna footprint
Inductive Coupling
Creating A Tag
Interactive Mode
Nulls(Voids)
12. Inductive coupling and passive backscatter (capacitive coupling)
Passive Communication Methods
Persist Time
ALOHA
Dry Inlay
13. Generation= Timeline of Introduction - Gen 1 & 2 - Gen 2 protocol backward compatible
Polarization
Tag Generations
Interactive Mode
Tag Antenna Construction
14. Process of creating a tag and uniquely associating it with an object
Microprocessor
Commissioning The Tag
Screen Printing
Interactive Mode
15. changes signal received from reader to include data that will be transmitted back to the reader
Modulation Circuitry
Flip-chip (Chip-to-Tag)
Actuator
RFID SyCommunication methods
16. Low Frequency(LF) - High Frequency(HF) - Ultra high frequency (UHF) and Microwave frequency
Types of Tag Frequencies
Tag
Linear Polarized Antenna
ALOHA
17. In this mode - reader continuously reads tags in its read zone
Main Components of RFID Tag
Autonomous Mode
Effective Radiated Power (ERP)
Commissioning The Tag
18. 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%)
Creating A Tag
Types of Tag Frequencies
ALOHA
RFID Reader
19. 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
Autonomous Mode
Foil Stamping
Sensor
Circular Polarized Antenna
20. 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
Tag Standards
Tag Collision
RFID Printer
21. When two waves (out of phase) impose on each other and the original signal is cancelled. Nulls are created s a result
Copper Etching
Destructive Interference
Interactive Mode
Characteristics Of Antennas That Contribute To Tag Readability
22. Tags collide completely or not at all (Theoretically proven maximum utilization= 36.8%)
Tag
Slotted ALOHA
Microwave Frequency
Types of Tag Frequencies
23. 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
Autonomous Mode
PLC
ALOHA
Reader Antennas
24. 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
Strap-to-Tag
Power Source
Linear Polarized Antenna
Multipath
25. 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
Passive Backscatter (Capacitive Coupling)
Tag Standards
Low Frequency (LF)
Transmitter
26. Measurement of power for radiation of antenna used in Europe
Modulation Circuitry
Inductive Coupling
Effective Radiated Power (ERP)
ALOHA
27. A mechanical device for controlling or moving objects - A programmable logic controller (PLC) - robot arm - mechanical arm - etc.
Modulation Circuitry
Destructive Interference
Nulls(Voids)
Actuator
28. Optical and RFID hybrid
RFID Printer
ALOHA
Smart Label
Constructive Interference
29. 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
Linear Polarized Reader Antenna
PLC
Attenuator
Tag Standards
30. Mount the tiny chip to a strap - Greater handling ability - Possibility to use very small chips - Possibility of higher volume production - Fluidic Self Assembly
Modulation Circuitry
Circular Polarized Antenna
Strap-to-Tag
RFID Reader
31. The act of writing the tag data by reader
Attenuator
Antenna Footprint
Polarization
Creating A Tag
32. Readability of a tag greatly depends on this and the angle at which the tag is presented to the reader
Types of Tag Frequencies
Slotted ALOHA
Polarization
Power Source
33. Inductive coupling and passive backscatter (capacitive coupling)
RFID SyCommunication methods
Serial Reader
Adaptive Binary Tree Anti-Collision
Memory
34. Die-cut web with adhesive - film face
Sensor
Wet Inlay
Antenna/Inductor
Modulation Circuitry
35. 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
Smart Label
Tag Antenna Construction
Polarization
36. Open image in meshed screens. Conductive ink "squeezed" thru open mesh.
Screen Printing
Tag Standards
Agile Reader
RFID Reader
37. 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 Antenna
Antenna/Inductor
Passive Communication Methods
Linear Polarized Reader Antenna
38. 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
Flip-chip (Chip-to-Tag)
Types of Tag Frequencies
Pattern(Footprint)
Serial Reader
39. 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)
Characteristics Of Antennas That Contribute To Tag Readability
Reader Collision
Tag Collision
Circular Polarized Antenna
40. Divides time into discrete time intervals (slots) . A packet can only be transmitted at the beginning of a slot - reduces the collision duration.
Strap-to-Tag
Slotted ALOHA
Read range
Antenna/Inductor
41. Ranges upward from 1 GHz - Typically operates at either 2.45 GHz or 5.8 GHz - Can use both semi-active and passive tags - Has FASTEST data-transfer rate between tag and reader - Performs poorly in presence of metals and liquids - Antenna of a passive
Modulation Circuitry
Microwave Frequency
Characteristics Of Antennas That Contribute To Tag Readability
Control Circuitry
42. The reflection of reader antenna signals on RF-opaque causes this
Multipath
Annunciator
Linear Polarized Reader Antenna
Power Source
43. Neighboring readers interrogate a tag simultaneously (can be easily solved because they can detect this and communicate to each other)
Circular Polarized Antenna
Constructive Interference
Memory
Reader Collision
44. 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
Main Components of RFID Tag
Control Circuitry
Power/Attenuation
45. 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
Screen Printing
Tag Antenna Construction
Tag Anti-Collision Protocols
PLC
46. Time for an associated tag to be read
Persist Time
Adaptive Binary Tree Anti-Collision
Decommissioning The Tag
Passive Backscatter (Capacitive Coupling)
47. Measurement of power for radiation of antenna used in US
Tag class
Characteristics Of Antennas That Contribute To Tag Readability
Strap-to-Tag
Equivalent Isotropic Radiated Power (EIRP)
48. 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.
Reader Antennas
Flip-chip (Chip-to-Tag)
RFID Printer
Inductive Coupling
49. Reader that can operate in different frequencies or can use different tag-to-reader communication protocols (generally stationary)
Linear Polarized Reader Antenna
Attenuator
Sensor
Agile Reader
50. Also called an 'interrogator' - A device that can read from and write data to compatible RFID tags - Also doubles up as a writer
Pattern(Footprint)
Tag Collision
Linear Polarized Antenna
RFID Reader
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