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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. controls the internal functions under the command of the processor
Tag Generations
Tag Standards
Control Circuitry
Adaptive Binary Tree Anti-Collision
2. Tags collide completely or not at all (Theoretically proven maximum utilization= 36.8%)
Tag List
Slotted ALOHA
Tag Anti-Collision Protocols
RFID SyCommunication methods
3. Process of creating a tag and uniquely associating it with an object
Stationary Reader
Coupling Element
Tag Collision
Commissioning The Tag
4. Dead zones that surround protrusions in antenna footprint
Power Source
Nulls(Voids)
Pattern(Footprint)
Tag List
5. Die used to "stamp" out the shape of antenna. Take up roller rolls the unused material into waste roll.
Passive Communication Methods
Stationary Reader
Foil Stamping
Screen Printing
6. Optical and RFID hybrid
Smart Label
ALOHA
Main Components of RFID Tag
Nulls(Voids)
7. 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
Inductive Coupling
Antenna Footprint
Attenuator
RFID Reader
8. Inductive coupling and passive backscatter (capacitive coupling)
Memory
Actuator
Power/Attenuation
Passive Communication Methods
9. 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
Types of tags
Adaptive Binary Tree Anti-Collision
Inductive Coupling
Low Frequency (LF)
10. IC Chip - Antenna/Inductor - Power Source
Tag Standards
Microwave Frequency
Serial Reader
Main Components of RFID Tag
11. 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%)
ALOHA
Tag Collision
Tag Standards
Wet Inlay
12. When two waves (in phase) impose on each other and enhance the original signal and give rise to protrusions
Foil Stamping
Commissioning The Tag
Control Circuitry
Constructive Interference
13. Also called an 'interrogator' - A device that can read from and write data to compatible RFID tags - Also doubles up as a writer
Tag Standards
RFID Reader
Interactive Mode
Tag
14. These are categorized into Aloha based protocols and tree based
Antenna Footprint
Linear Polarized Reader Antenna
Tag Anti-Collision Protocols
Persist Time
15. The orientation of the transmitted electromagnetic field or the direction of oscillation of electromagnetically emitted waves
Annunciator
Polarization
Wet Inlay
Types of tags
16. 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
Persist Time
Linear Polarized Reader Antenna
Passive Communication Methods
UHF
17. When two waves (out of phase) impose on each other and the original signal is cancelled. Nulls are created s a result
Screen Printing
Commissioning The Tag
Passive Communication Methods
Destructive Interference
18. Divides time into discrete time intervals (slots) . A packet can only be transmitted at the beginning of a slot - reduces the collision duration.
Annunciator
Creating A Tag
Effective Radiated Power (ERP)
Slotted ALOHA
19. 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)
Types of Tag Frequencies
Antenna/Inductor
Reader Antennas
Circular Polarized Antenna
20. Class= Functionality - - Class 0 -1 -2 -3 -4 & 5
Polarization
Tag class
Pattern(Footprint)
Decommissioning The Tag
21. Standards = EPC global & ISO 18000 - Different Organizations
Tag Standards
Antenna/Inductor
Tag Generations
Destructive Interference
22. Smart cards - smart label - etc.
Reader Collision
Pattern(Footprint)
Power/Attenuation
Types of tags
23. 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
Circular Polarized Reader Antenna
Tag List
Annunciator
Agile Reader
24. Reader that can operate in different frequencies or can use different tag-to-reader communication protocols (generally stationary)
Stationary Reader
RFID Printer
Agile Reader
Decommissioning The Tag
25. The time during which a reader can emit RF energy to read tags
Duty Cycle
Nulls(Voids)
RFID Reader
Memory
26. Die-cut web with adhesive - film face
Wet Inlay
Reader Collision
Constructive Interference
Types of tags
27. Measurement of power for radiation of antenna used in US
Slotted ALOHA
PLC
Equivalent Isotropic Radiated Power (EIRP)
RFID Reader
28. Generation= Timeline of Introduction - Gen 1 & 2 - Gen 2 protocol backward compatible
ALOHA
Tag Generations
Sensor
Inductive Coupling
29. 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
Duty Cycle
Reader Antenna
PLC
RFID Printer
30. A mechanical device for controlling or moving objects - A programmable logic controller (PLC) - robot arm - mechanical arm - etc.
Stationary Reader
RFID Reader
Actuator
RFID SyCommunication methods
31. Responsible for implementing the reader protocol to communicate with compatible tags
Attenuator
Interactive Mode
Decommissioning The Tag
Microprocessor
32. Continuous web - no adhesive
Linear Polarized Antenna
Dry Inlay
Slotted ALOHA
Tag Antenna Construction
33. 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
Multipath
Interactive Mode
Sensor
Serial Reader
34. 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
Creating A Tag
Actuator
Antenna Footprint
Tag Antenna Construction
35. Receives signal from reader and radiates a response back to the reader - LF or HF: induction coil - UHF or Microwave Frequency: printed antennas
Tag Generations
Antenna/Inductor
Microwave Frequency
Memory
36. Die-cut web adhesive - paper face
Stationary Reader
Constructive Interference
Tag
RFID Reader
37. changes signal received from reader to include data that will be transmitted back to the reader
Slotted ALOHA
Effective Radiated Power (ERP)
Modulation Circuitry
Tag Antenna Construction
38. 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...
Memory
Tag Antenna Construction
Creating A Tag
Transmitter
39. The act of writing the tag data by reader
Main Components of RFID Tag
RFID Printer
Tag List
Creating A Tag
40. 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
Tag List
Reader Antenna
Interactive Mode
Reader Antennas
41. Mount the tiny chip to a strap - Greater handling ability - Possibility to use very small chips - Possibility of higher volume production - Fluidic Self Assembly
Strap-to-Tag
UHF
Pattern(Footprint)
Tag class
42. Interprets the signal received from reader and controls memory storage and retrieval
Flip-chip (Chip-to-Tag)
Agile Reader
Processor
Types of tags
43. Receives analog signals from the tag via the reader antenna
Receiver
Pattern(Footprint)
Tag Collision
Passive Backscatter (Capacitive Coupling)
44. Used for storing data such as the reader configuration parameters and a list of tag reads
Circular Polarized Antenna
RFID Printer
Memory
Power/Attenuation
45. Time for an associated tag to be read
Autonomous Mode
Decommissioning The Tag
Transmitter
Persist Time
46. 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
Duty Cycle
Linear Polarized Reader Antenna
Tag Anti-Collision Protocols
Main Components of RFID Tag
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
Interactive Mode
Effective Radiated Power (ERP)
Types of Tag Frequencies
Tag Anti-Collision Protocols
48. 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
Tag Collision
Sensor
Slotted ALOHA
Attenuator
49. 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
Decommissioning The Tag
Tag Antenna Construction
Microwave Frequency
Stationary Reader
50. Proximity systems (low range -mm) medium range (cm) and long range (m)
RFID Reader
Passive Communication Methods
Read range
Reader Antenna