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Test your basic knowledge |
RFID Technology
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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. 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
Destructive Interference
RFID Reader
Constructive Interference
Circular Polarized Reader Antenna
2. Measurement of power for radiation of antenna used in Europe
Microprocessor
Polarization
Effective Radiated Power (ERP)
Read range
3. Mount the tiny chip to a strap - Greater handling ability - Possibility to use very small chips - Possibility of higher volume production - Fluidic Self Assembly
Transmitter
Strap-to-Tag
Wet Inlay
Agile Reader
4. These are categorized into Aloha based protocols and tree based
Tag Anti-Collision Protocols
Integrated Circuit Chips
Duty Cycle
Microprocessor
5. Die used to "stamp" out the shape of antenna. Take up roller rolls the unused material into waste roll.
Polarization
Interactive Mode
Tag List
Foil Stamping
6. Measurement of power for radiation of antenna used in US
Equivalent Isotropic Radiated Power (EIRP)
Creating A Tag
Reader Antenna
Duty Cycle
7. More than one tag tries to respond to a reader at the same time.
Multipath
Microprocessor
Tag Collision
Polarization
8. Neighboring readers interrogate a tag simultaneously (can be easily solved because they can detect this and communicate to each other)
RFID Printer
Receiver
Constructive Interference
Reader Collision
9. Smart cards - smart label - etc.
Types of tags
Circular Polarized Antenna
RFID Printer
Pattern(Footprint)
10. Brains of the RFID tag
Integrated Circuit Chips
Reader Antenna
Tag Standards
Agile Reader
11. Also called an 'interrogator' - A device that can read from and write data to compatible RFID tags - Also doubles up as a writer
Types of tags
RFID Reader
Sensor
Tag Antenna Construction
12. The time during which a reader can emit RF energy to read tags
Duty Cycle
Microwave Frequency
Characteristics Of Antennas That Contribute To Tag Readability
Linear Polarized Antenna
13. 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
Passive Backscatter (Capacitive Coupling)
ALOHA
Polarization
RFID Reader
14. Readability of a tag greatly depends on this and the angle at which the tag is presented to the reader
Screen Printing
UHF
Tag Anti-Collision Protocols
Polarization
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
Destructive Interference
Low Frequency (LF)
Tag Generations
UHF
16. 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
ALOHA
Memory
Constructive Interference
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.
RFID Printer
Flip-chip (Chip-to-Tag)
Nulls(Voids)
Linear Polarized Antenna
18. 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
Attenuator
RFID Printer
Equivalent Isotropic Radiated Power (EIRP)
Foil Stamping
19. Low Frequency(LF) - High Frequency(HF) - Ultra high frequency (UHF) and Microwave frequency
Transmitter
Microprocessor
Types of Tag Frequencies
Main Components of RFID Tag
20. UHF and microwave passive tags
Interactive Mode
Circular Polarized Reader Antenna
UHF
Passive Backscatter (Capacitive Coupling)
21. Optical and RFID hybrid
Smart Label
Tag List
Effective Radiated Power (ERP)
Power/Attenuation
22. 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
Main Components of RFID Tag
Reader Antennas
Polarization
Duty Cycle
23. An electronic signal or indicator - Audible alarms - strobes - light stacks - etc.
Polarization
Annunciator
Tag
Tag Anti-Collision Protocols
24. 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
Serial Reader
Tag Generations
Attenuator
Decommissioning The Tag
25. 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
Destructive Interference
Tag Anti-Collision Protocols
UHF
Flip-chip (Chip-to-Tag)
26. Process of creating a tag and uniquely associating it with an object
Tag
Copper Etching
Commissioning The Tag
Polarization
27. Receives analog signals from the tag via the reader antenna
Main Components of RFID Tag
Effective Radiated Power (ERP)
Receiver
RFID SyCommunication methods
28. 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
Slotted ALOHA
Circular Polarized Antenna
Polarization
29. The act of writing the tag data by reader
Tag Anti-Collision Protocols
Equivalent Isotropic Radiated Power (EIRP)
Smart Label
Creating A Tag
30. Serves as writable or non-writable data storage
Memory
Serial Reader
Circular Polarized Antenna
Passive Backscatter (Capacitive Coupling)
31. 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)
Annunciator
Microwave Frequency
Memory
Circular Polarized Antenna
32. 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.
Slotted ALOHA
Coupling Element
Strap-to-Tag
Adaptive Binary Tree Anti-Collision
33. Generation= Timeline of Introduction - Gen 1 & 2 - Gen 2 protocol backward compatible
Nulls(Voids)
ALOHA
Annunciator
Tag Generations
34. To disassociate the tag from a tagged object and optionally destroy it
Stationary Reader
Inductive Coupling
Tag
Decommissioning The Tag
35. In this mode - reader continuously reads tags in its read zone
Autonomous Mode
Multipath
Copper Etching
Passive Backscatter (Capacitive Coupling)
36. 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
UHF
Slotted ALOHA
Inductive Coupling
Foil Stamping
37. Time for an associated tag to be read
Polarization
Persist Time
Linear Polarized Reader Antenna
Foil Stamping
38. Class= Functionality - - Class 0 -1 -2 -3 -4 & 5
Effective Radiated Power (ERP)
RFID Reader
Tag class
Smart Label
39. Tags collide completely or not at all (Theoretically proven maximum utilization= 36.8%)
Processor
Slotted ALOHA
Polarization
Integrated Circuit Chips
40. When two waves (out of phase) impose on each other and the original signal is cancelled. Nulls are created s a result
Stationary Reader
Destructive Interference
Equivalent Isotropic Radiated Power (EIRP)
Tag Antenna Construction
41. IC Chip - Antenna/Inductor - Power Source
Main Components of RFID Tag
Linear Polarized Reader Antenna
Processor
Passive Backscatter (Capacitive Coupling)
42. 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
Actuator
Duty Cycle
Foil Stamping
43. Every time a tag is read - it is saved to this
Tag List
Reader Collision
Passive Communication Methods
Strap-to-Tag
44. Inductive coupling and passive backscatter (capacitive coupling)
Adaptive Binary Tree Anti-Collision
Multipath
Types of Tag Frequencies
RFID SyCommunication methods
45. Standards = EPC global & ISO 18000 - Different Organizations
Reader Antennas
Tag Standards
Pattern(Footprint)
Foil Stamping
46. The 3D energy field generated by the antenna (also called reading area)
Control Circuitry
Tag Standards
Pattern(Footprint)
Read range
47. 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
Wet Inlay
Decommissioning The Tag
Polarization
Interactive Mode
48. Reader that can operate in different frequencies or can use different tag-to-reader communication protocols (generally stationary)
Tag Generations
Reader Antenna
Wet Inlay
Agile Reader
49. In this this antenna type - the RF waves emanate in a linear pattern from the antenna. Waves have only one energy field
Reader Antenna
Low Frequency (LF)
Serial Reader
Linear Polarized Antenna
50. 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
RFID SyCommunication methods
Passive Backscatter (Capacitive Coupling)
Memory
Linear Polarized Reader Antenna
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