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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. 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)
Circular Polarized Antenna
Commissioning The Tag
Linear Polarized Antenna
Passive Communication Methods
2. Reader transmits a continuous-wave RF signal into the reading environment
Serial Reader
RFID SyCommunication methods
Passive Backscatter (Capacitive Coupling)
Linear Polarized Antenna
3. 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
RFID SyCommunication methods
Antenna Footprint
Sensor
Power/Attenuation
4. Dead zones that surround protrusions in antenna footprint
Antenna Footprint
Nulls(Voids)
Flip-chip (Chip-to-Tag)
Receiver
5. 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
UHF
Destructive Interference
Reader Antennas
Receiver
6. 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
Types of tags
Modulation Circuitry
PLC
Reader Antenna
7. Process of creating a tag and uniquely associating it with an object
Commissioning The Tag
Destructive Interference
Annunciator
Tag class
8. Receives signal from reader and radiates a response back to the reader - LF or HF: induction coil - UHF or Microwave Frequency: printed antennas
Reader Antennas
Autonomous Mode
Antenna/Inductor
RFID Reader
9. The reflection of reader antenna signals on RF-opaque causes this
Types of Tag Frequencies
Interactive Mode
PLC
Multipath
10. Tags collide completely or not at all (Theoretically proven maximum utilization= 36.8%)
Transmitter
Slotted ALOHA
Adaptive Binary Tree Anti-Collision
Copper Etching
11. Reader that can operate in different frequencies or can use different tag-to-reader communication protocols (generally stationary)
Characteristics Of Antennas That Contribute To Tag Readability
RFID SyCommunication methods
Agile Reader
Annunciator
12. '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
Sensor
RFID Reader
Wet Inlay
Dry Inlay
13. Mount the tiny chip to a strap - Greater handling ability - Possibility to use very small chips - Possibility of higher volume production - Fluidic Self Assembly
Adaptive Binary Tree Anti-Collision
Strap-to-Tag
Slotted ALOHA
ALOHA
14. 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
Tag
Screen Printing
Tag Anti-Collision Protocols
Serial Reader
15. Serves as writable or non-writable data storage
Tag Anti-Collision Protocols
Memory
Passive Backscatter (Capacitive Coupling)
Transmitter
16. 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.
Slotted ALOHA
Reader Antenna
Flip-chip (Chip-to-Tag)
Interactive Mode
17. In this this antenna type - the RF waves emanate in a linear pattern from the antenna. Waves have only one energy field
Copper Etching
Linear Polarized Antenna
Actuator
Tag List
18. Proximity systems (low range -mm) medium range (cm) and long range (m)
Read range
Microwave Frequency
Persist Time
Effective Radiated Power (ERP)
19. 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...
ALOHA
Strap-to-Tag
Nulls(Voids)
Tag Antenna Construction
20. Measurement of power for radiation of antenna used in Europe
Control Circuitry
Annunciator
Effective Radiated Power (ERP)
Stationary Reader
21. Image "burned" into photopolymer layer. All copper removed except where image was burned. Copper antenna goes through additional processes to protect from oxidation
Sensor
Power Source
Tag
Copper Etching
22. 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
Tag Collision
Memory
Polarization
ALOHA
23. Neighboring readers interrogate a tag simultaneously (can be easily solved because they can detect this and communicate to each other)
Passive Backscatter (Capacitive Coupling)
Attenuator
Reader Collision
Tag Collision
24. Low Frequency(LF) - High Frequency(HF) - Ultra high frequency (UHF) and Microwave frequency
Annunciator
Read range
Passive Communication Methods
Types of Tag Frequencies
25. Measurement of power for radiation of antenna used in US
Equivalent Isotropic Radiated Power (EIRP)
Memory
Microprocessor
Stationary Reader
26. Die-cut web with adhesive - film face
Power Source
Integrated Circuit Chips
Wet Inlay
Power/Attenuation
27. Standards = EPC global & ISO 18000 - Different Organizations
Tag Antenna Construction
Processor
Linear Polarized Antenna
Tag Standards
28. controls the internal functions under the command of the processor
Duty Cycle
Control Circuitry
Agile Reader
Characteristics Of Antennas That Contribute To Tag Readability
29. 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 Anti-Collision Protocols
Linear Polarized Reader Antenna
Reader Antennas
Pattern(Footprint)
30. 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
Memory
Tag class
RFID Printer
Duty Cycle
31. To disassociate the tag from a tagged object and optionally destroy it
Smart Label
Antenna/Inductor
Decommissioning The Tag
Tag Collision
32. More than one tag tries to respond to a reader at the same time.
Tag Collision
ALOHA
Smart Label
RFID Reader
33. Inductive coupling and passive backscatter (capacitive coupling)
Slotted ALOHA
PLC
Passive Communication Methods
Autonomous Mode
34. Optical and RFID hybrid
Screen Printing
Annunciator
Smart Label
RFID Printer
35. 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.
Duty Cycle
Tag class
Foil Stamping
Coupling Element
36. Also called an 'interrogator' - A device that can read from and write data to compatible RFID tags - Also doubles up as a writer
Slotted ALOHA
Creating A Tag
RFID Reader
Memory
37. Generation= Timeline of Introduction - Gen 1 & 2 - Gen 2 protocol backward compatible
Smart Label
Coupling Element
Tag Generations
Serial Reader
38. Divides time into discrete time intervals (slots) . A packet can only be transmitted at the beginning of a slot - reduces the collision duration.
Destructive Interference
Slotted ALOHA
Polarization
Serial Reader
39. A mechanical device for controlling or moving objects - A programmable logic controller (PLC) - robot arm - mechanical arm - etc.
Microprocessor
Passive Backscatter (Capacitive Coupling)
PLC
Actuator
40. Every time a tag is read - it is saved to this
Equivalent Isotropic Radiated Power (EIRP)
Attenuator
Tag List
RFID Reader
41. When two waves (out of phase) impose on each other and the original signal is cancelled. Nulls are created s a result
Characteristics Of Antennas That Contribute To Tag Readability
Passive Backscatter (Capacitive Coupling)
Destructive Interference
Serial Reader
42. 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
Annunciator
Tag Generations
Reader Antennas
43. 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
ALOHA
Memory
RFID Reader
44. Brains of the RFID tag
Polarization
RFID Reader
Agile Reader
Integrated Circuit Chips
45. UHF and microwave passive tags
Passive Communication Methods
Linear Polarized Reader Antenna
Passive Backscatter (Capacitive Coupling)
Flip-chip (Chip-to-Tag)
46. When two waves (in phase) impose on each other and enhance the original signal and give rise to protrusions
Constructive Interference
Microwave Frequency
Modulation Circuitry
Slotted ALOHA
47. 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
RFID Reader
Inductive Coupling
Low Frequency (LF)
Agile Reader
48. The 3D energy field generated by the antenna (also called reading area)
Pattern(Footprint)
Attenuator
Antenna Footprint
Slotted ALOHA
49. Class= Functionality - - Class 0 -1 -2 -3 -4 & 5
Interactive Mode
Tag class
Tag
Integrated Circuit Chips
50. Time for an associated tag to be read
Memory
Persist Time
Modulation Circuitry
Slotted ALOHA