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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. 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.
ALOHA
Screen Printing
Autonomous Mode
Coupling Element
2. 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
Stationary Reader
Adaptive Binary Tree Anti-Collision
Tag Collision
Processor
3. 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
Integrated Circuit Chips
Antenna/Inductor
Interactive Mode
Adaptive Binary Tree Anti-Collision
4. Used for storing data such as the reader configuration parameters and a list of tag reads
Annunciator
Multipath
Memory
Types of Tag Frequencies
5. Continuous web - no adhesive
Dry Inlay
Persist Time
Reader Collision
Memory
6. Mount the tiny chip to a strap - Greater handling ability - Possibility to use very small chips - Possibility of higher volume production - Fluidic Self Assembly
Linear Polarized Reader Antenna
Strap-to-Tag
Passive Communication Methods
Actuator
7. 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...
Integrated Circuit Chips
Tag Antenna Construction
Dry Inlay
Flip-chip (Chip-to-Tag)
8. 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
Transmitter
Control Circuitry
Inductive Coupling
9. 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
Creating A Tag
Power Source
Passive Backscatter (Capacitive Coupling)
Processor
10. Tags collide completely or not at all (Theoretically proven maximum utilization= 36.8%)
Slotted ALOHA
RFID SyCommunication methods
Memory
Circular Polarized Reader Antenna
11. Brains of the RFID tag
Memory
Integrated Circuit Chips
Flip-chip (Chip-to-Tag)
Microprocessor
12. Low Frequency(LF) - High Frequency(HF) - Ultra high frequency (UHF) and Microwave frequency
Antenna Footprint
Types of Tag Frequencies
Modulation Circuitry
Memory
13. Die-cut web with adhesive - film face
Coupling Element
Stationary Reader
Processor
Wet Inlay
14. Proximity systems (low range -mm) medium range (cm) and long range (m)
Tag List
RFID Reader
Read range
Passive Backscatter (Capacitive Coupling)
15. Inductive coupling and passive backscatter (capacitive coupling)
Dry Inlay
RFID SyCommunication methods
Duty Cycle
UHF
16. 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
Microwave Frequency
Power/Attenuation
Reader Collision
Power Source
17. Serves as writable or non-writable data storage
Persist Time
Tag Anti-Collision Protocols
Memory
Actuator
18. Process of creating a tag and uniquely associating it with an object
Reader Antennas
Passive Backscatter (Capacitive Coupling)
Interactive Mode
Commissioning The Tag
19. Class= Functionality - - Class 0 -1 -2 -3 -4 & 5
Circular Polarized Antenna
Integrated Circuit Chips
Tag class
Polarization
20. Image "burned" into photopolymer layer. All copper removed except where image was burned. Copper antenna goes through additional processes to protect from oxidation
Flip-chip (Chip-to-Tag)
Attenuator
ALOHA
Copper Etching
21. When two waves (out of phase) impose on each other and the original signal is cancelled. Nulls are created s a result
Reader Antennas
Power/Attenuation
Destructive Interference
Multipath
22. Die-cut web adhesive - paper face
Tag
Tag Collision
Foil Stamping
Memory
23. 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
Effective Radiated Power (ERP)
Nulls(Voids)
Antenna Footprint
Decommissioning The Tag
24. Reader transmits a continuous-wave RF signal into the reading environment
Creating A Tag
Memory
Passive Backscatter (Capacitive Coupling)
Power Source
25. Every time a tag is read - it is saved to this
Tag List
Tag Collision
Sensor
Passive Backscatter (Capacitive Coupling)
26. Interprets the signal received from reader and controls memory storage and retrieval
Receiver
Tag Standards
Processor
Microwave Frequency
27. 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
RFID SyCommunication methods
Polarization
Screen Printing
Reader Antennas
28. Readability of a tag greatly depends on this and the angle at which the tag is presented to the reader
Effective Radiated Power (ERP)
Polarization
Stationary Reader
Attenuator
29. Responsible for implementing the reader protocol to communicate with compatible tags
Equivalent Isotropic Radiated Power (EIRP)
Tag Collision
Dry Inlay
Microprocessor
30. 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 Reader Antenna
Strap-to-Tag
Passive Backscatter (Capacitive Coupling)
PLC
31. 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
Reader Antenna
Low Frequency (LF)
Duty Cycle
Tag Antenna Construction
32. 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%)
Inductive Coupling
Coupling Element
ALOHA
Antenna/Inductor
33. IC Chip - Antenna/Inductor - Power Source
Actuator
PLC
Main Components of RFID Tag
Stationary Reader
34. Measurement of power for radiation of antenna used in US
Characteristics Of Antennas That Contribute To Tag Readability
Wet Inlay
Types of tags
Equivalent Isotropic Radiated Power (EIRP)
35. Dead zones that surround protrusions in antenna footprint
Flip-chip (Chip-to-Tag)
Copper Etching
Modulation Circuitry
Nulls(Voids)
36. 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)
Tag Collision
RFID SyCommunication methods
Circular Polarized Antenna
Memory
37. 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
Inductive Coupling
Circular Polarized Reader Antenna
Constructive Interference
Decommissioning The Tag
38. The act of writing the tag data by reader
Characteristics Of Antennas That Contribute To Tag Readability
ALOHA
Creating A Tag
Annunciator
39. Inductive coupling and passive backscatter (capacitive coupling)
RFID Reader
Passive Backscatter (Capacitive Coupling)
Coupling Element
Passive Communication Methods
40. Generation= Timeline of Introduction - Gen 1 & 2 - Gen 2 protocol backward compatible
Tag Standards
Polarization
Tag Generations
Microwave Frequency
41. 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
Actuator
UHF
Main Components of RFID Tag
Tag Anti-Collision Protocols
42. 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.
Multipath
Receiver
RFID Printer
Flip-chip (Chip-to-Tag)
43. 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
Slotted ALOHA
Reader Collision
Smart Label
Serial Reader
44. The orientation of the transmitted electromagnetic field or the direction of oscillation of electromagnetically emitted waves
Coupling Element
Memory
Agile Reader
Polarization
45. Pattern(Footprint) - Power/Attenuation - and Polarization
Characteristics Of Antennas That Contribute To Tag Readability
Types of Tag Frequencies
Power/Attenuation
Coupling Element
46. Used to transmit AC power and the clock cycle via its antennas to the tags in its read zone
Foil Stamping
Transmitter
UHF
Annunciator
47. Smart cards - smart label - etc.
Flip-chip (Chip-to-Tag)
Types of tags
Interactive Mode
RFID Reader
48. Standards = EPC global & ISO 18000 - Different Organizations
Commissioning The Tag
Tag Standards
Constructive Interference
Tag List
49. Reader that can operate in different frequencies or can use different tag-to-reader communication protocols (generally stationary)
Smart Label
Dry Inlay
Agile Reader
Antenna Footprint
50. Time for an associated tag to be read
Circular Polarized Reader Antenna
Persist Time
Characteristics Of Antennas That Contribute To Tag Readability
Power/Attenuation