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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. 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.
Screen Printing
Characteristics Of Antennas That Contribute To Tag Readability
Flip-chip (Chip-to-Tag)
RFID SyCommunication methods
2. To disassociate the tag from a tagged object and optionally destroy it
Adaptive Binary Tree Anti-Collision
Decommissioning The Tag
Nulls(Voids)
Serial Reader
3. Image "burned" into photopolymer layer. All copper removed except where image was burned. Copper antenna goes through additional processes to protect from oxidation
Equivalent Isotropic Radiated Power (EIRP)
Tag Generations
ALOHA
Copper Etching
4. Reader that can operate in different frequencies or can use different tag-to-reader communication protocols (generally stationary)
Agile Reader
Power/Attenuation
Interactive Mode
Tag Anti-Collision Protocols
5. Smart cards - smart label - etc.
Types of tags
Stationary Reader
RFID Reader
Tag Standards
6. Optical and RFID hybrid
Polarization
Smart Label
Nulls(Voids)
RFID Printer
7. In this this antenna type - the RF waves emanate in a linear pattern from the antenna. Waves have only one energy field
Linear Polarized Antenna
Constructive Interference
Inductive Coupling
UHF
8. Similar to guessing a number made of 1's and 0's by guessing each number one at a time
Dry Inlay
RFID Reader
Antenna Footprint
Adaptive Binary Tree Anti-Collision
9. Generation= Timeline of Introduction - Gen 1 & 2 - Gen 2 protocol backward compatible
Coupling Element
Tag Generations
Pattern(Footprint)
Tag Collision
10. 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
Annunciator
Persist Time
Circular Polarized Reader Antenna
Memory
11. Low Frequency(LF) - High Frequency(HF) - Ultra high frequency (UHF) and Microwave frequency
Types of Tag Frequencies
Creating A Tag
Serial Reader
Reader Antenna
12. 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
Tag Generations
RFID Reader
UHF
Microwave Frequency
13. Serves as writable or non-writable data storage
Passive Backscatter (Capacitive Coupling)
Characteristics Of Antennas That Contribute To Tag Readability
Multipath
Memory
14. 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
Transmitter
Power Source
Reader Antennas
Inductive Coupling
15. 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
Memory
Passive Backscatter (Capacitive Coupling)
ALOHA
16. 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
PLC
Memory
Inductive Coupling
Actuator
17. Time for an associated tag to be read
Wet Inlay
Tag Generations
Persist Time
Tag Standards
18. Die-cut web adhesive - paper face
Power/Attenuation
Tag
Annunciator
Screen Printing
19. These are categorized into Aloha based protocols and tree based
Tag Anti-Collision Protocols
Power Source
ALOHA
RFID SyCommunication methods
20. Die-cut web with adhesive - film face
Autonomous Mode
Adaptive Binary Tree Anti-Collision
Power/Attenuation
Wet Inlay
21. The time during which a reader can emit RF energy to read tags
Foil Stamping
Multipath
Duty Cycle
Characteristics Of Antennas That Contribute To Tag Readability
22. The act of writing the tag data by reader
Reader Collision
Tag Collision
Creating A Tag
Attenuator
23. Standards = EPC global & ISO 18000 - Different Organizations
Tag Standards
Main Components of RFID Tag
Tag List
Flip-chip (Chip-to-Tag)
24. 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
Control Circuitry
Low Frequency (LF)
Coupling Element
RFID Printer
25. Also called an 'interrogator' - A device that can read from and write data to compatible RFID tags - Also doubles up as a writer
RFID SyCommunication methods
RFID Reader
Annunciator
Decommissioning The Tag
26. Reader transmits a continuous-wave RF signal into the reading environment
Reader Collision
Wet Inlay
Agile Reader
Passive Backscatter (Capacitive Coupling)
27. A mechanical device for controlling or moving objects - A programmable logic controller (PLC) - robot arm - mechanical arm - etc.
Power/Attenuation
Adaptive Binary Tree Anti-Collision
Actuator
Coupling Element
28. 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...
Polarization
Passive Backscatter (Capacitive Coupling)
Persist Time
Tag Antenna Construction
29. 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
Characteristics Of Antennas That Contribute To Tag Readability
Low Frequency (LF)
Adaptive Binary Tree Anti-Collision
30. Neighboring readers interrogate a tag simultaneously (can be easily solved because they can detect this and communicate to each other)
Copper Etching
Reader Collision
Effective Radiated Power (ERP)
Power/Attenuation
31. Dead zones that surround protrusions in antenna footprint
Pattern(Footprint)
Smart Label
Persist Time
Nulls(Voids)
32. 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
Antenna/Inductor
UHF
Strap-to-Tag
Coupling Element
33. Inductive coupling and passive backscatter (capacitive coupling)
Passive Communication Methods
Commissioning The Tag
Nulls(Voids)
Memory
34. 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
ALOHA
Flip-chip (Chip-to-Tag)
Attenuator
Antenna/Inductor
35. The orientation of the transmitted electromagnetic field or the direction of oscillation of electromagnetically emitted waves
Power Source
Polarization
Tag Antenna Construction
Transmitter
36. 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
Dry Inlay
Agile Reader
Passive Communication Methods
37. Pattern(Footprint) - Power/Attenuation - and Polarization
Microprocessor
Tag
Foil Stamping
Characteristics Of Antennas That Contribute To Tag Readability
38. 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
Modulation Circuitry
Reader Antenna
Types of Tag Frequencies
Interactive Mode
39. More than one tag tries to respond to a reader at the same time.
Attenuator
Antenna/Inductor
Serial Reader
Tag Collision
40. An electronic signal or indicator - Audible alarms - strobes - light stacks - etc.
Decommissioning The Tag
Power Source
Control Circuitry
Annunciator
41. '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
Equivalent Isotropic Radiated Power (EIRP)
RFID Reader
Passive Communication Methods
Power Source
42. 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
Control Circuitry
PLC
Reader Antenna
Reader Collision
43. UHF and microwave passive tags
Creating A Tag
Multipath
Passive Backscatter (Capacitive Coupling)
RFID Reader
44. In this mode - reader continuously reads tags in its read zone
Reader Antennas
Modulation Circuitry
Autonomous Mode
Tag class
45. Process of creating a tag and uniquely associating it with an object
Tag Standards
Integrated Circuit Chips
RFID Reader
Commissioning The Tag
46. The reflection of reader antenna signals on RF-opaque causes this
Multipath
Passive Backscatter (Capacitive Coupling)
Flip-chip (Chip-to-Tag)
Reader Antennas
47. 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)
Inductive Coupling
Persist Time
Sensor
Circular Polarized Antenna
48. Responsible for implementing the reader protocol to communicate with compatible tags
ALOHA
Microprocessor
Types of tags
Stationary Reader
49. Measurement of power for radiation of antenna used in US
Equivalent Isotropic Radiated Power (EIRP)
Effective Radiated Power (ERP)
Receiver
Transmitter
50. Tags collide completely or not at all (Theoretically proven maximum utilization= 36.8%)
Power Source
Integrated Circuit Chips
Slotted ALOHA
Tag Antenna Construction