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Test your basic knowledge |
RFID Technology
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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. The reflection of reader antenna signals on RF-opaque causes this
Creating A Tag
Passive Communication Methods
Nulls(Voids)
Multipath
2. 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)
Creating A Tag
ALOHA
Polarization
3. An electronic signal or indicator - Audible alarms - strobes - light stacks - etc.
RFID SyCommunication methods
Tag
Stationary Reader
Annunciator
4. To disassociate the tag from a tagged object and optionally destroy it
Reader Collision
Main Components of RFID Tag
Polarization
Decommissioning The Tag
5. In this this antenna type - the RF waves emanate in a linear pattern from the antenna. Waves have only one energy field
Circular Polarized Antenna
Linear Polarized Antenna
Wet Inlay
Receiver
6. Inductive coupling and passive backscatter (capacitive coupling)
Read range
RFID SyCommunication methods
Circular Polarized Reader Antenna
Memory
7. Reader that can operate in different frequencies or can use different tag-to-reader communication protocols (generally stationary)
RFID Printer
Actuator
Agile Reader
Linear Polarized Reader Antenna
8. 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.
Interactive Mode
Coupling Element
Integrated Circuit Chips
Tag Antenna Construction
9. Reader transmits a continuous-wave RF signal into the reading environment
Transmitter
Annunciator
Tag Anti-Collision Protocols
Passive Backscatter (Capacitive Coupling)
10. UHF and microwave passive tags
PLC
Passive Backscatter (Capacitive Coupling)
Tag class
Decommissioning The Tag
11. Fixed to meet FCC and other regulatory requirements. The signal can be decreased or attenuated to limit the tag read window or aim it only at tags you want to read
Tag Standards
Processor
Power/Attenuation
Passive Backscatter (Capacitive Coupling)
12. Die-cut web adhesive - paper face
Tag
Transmitter
Autonomous Mode
Effective Radiated Power (ERP)
13. 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
Power Source
Commissioning The Tag
Inductive Coupling
Reader Antennas
14. Die-cut web with adhesive - film face
Microprocessor
Duty Cycle
Tag Antenna Construction
Wet Inlay
15. 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.
Wet Inlay
Read range
Flip-chip (Chip-to-Tag)
Foil Stamping
16. Low Frequency(LF) - High Frequency(HF) - Ultra high frequency (UHF) and Microwave frequency
Types of Tag Frequencies
Circular Polarized Antenna
Microwave Frequency
Read range
17. Measurement of power for radiation of antenna used in US
Coupling Element
Microprocessor
Equivalent Isotropic Radiated Power (EIRP)
Tag Antenna Construction
18. Inductive coupling and passive backscatter (capacitive coupling)
Passive Communication Methods
Decommissioning The Tag
Tag Standards
Antenna Footprint
19. Receives analog signals from the tag via the reader antenna
Receiver
Decommissioning The Tag
PLC
Duty Cycle
20. Image "burned" into photopolymer layer. All copper removed except where image was burned. Copper antenna goes through additional processes to protect from oxidation
Reader Collision
Copper Etching
Agile Reader
Effective Radiated Power (ERP)
21. 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
Tag Collision
RFID Reader
Modulation Circuitry
Power Source
22. 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...
Foil Stamping
RFID Reader
Tag Antenna Construction
Creating A Tag
23. Similar to guessing a number made of 1's and 0's by guessing each number one at a time
Persist Time
Adaptive Binary Tree Anti-Collision
Reader Antenna
Circular Polarized Antenna
24. Readability of a tag greatly depends on this and the angle at which the tag is presented to the reader
Read range
Microprocessor
Polarization
Wet Inlay
25. IC Chip - Antenna/Inductor - Power Source
Power/Attenuation
RFID Reader
Antenna/Inductor
Main Components of RFID Tag
26. Receives signal from reader and radiates a response back to the reader - LF or HF: induction coil - UHF or Microwave Frequency: printed antennas
Reader Collision
Polarization
Antenna/Inductor
Multipath
27. Serves as writable or non-writable data storage
Memory
Commissioning The Tag
Antenna/Inductor
Integrated Circuit Chips
28. Die used to "stamp" out the shape of antenna. Take up roller rolls the unused material into waste roll.
Foil Stamping
Flip-chip (Chip-to-Tag)
RFID Printer
Receiver
29. A mechanical device for controlling or moving objects - A programmable logic controller (PLC) - robot arm - mechanical arm - etc.
Polarization
Screen Printing
Duty Cycle
Actuator
30. Neighboring readers interrogate a tag simultaneously (can be easily solved because they can detect this and communicate to each other)
ALOHA
Reader Collision
Serial Reader
Circular Polarized Reader Antenna
31. The 3D energy field generated by the antenna (also called reading area)
Constructive Interference
Types of tags
Pattern(Footprint)
Adaptive Binary Tree Anti-Collision
32. The act of writing the tag data by reader
Memory
Creating A Tag
ALOHA
Multipath
33. 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
Types of Tag Frequencies
Nulls(Voids)
Screen Printing
Circular Polarized Reader Antenna
34. Mount the tiny chip to a strap - Greater handling ability - Possibility to use very small chips - Possibility of higher volume production - Fluidic Self Assembly
Decommissioning The Tag
Modulation Circuitry
Equivalent Isotropic Radiated Power (EIRP)
Strap-to-Tag
35. Measurement of power for radiation of antenna used in Europe
Modulation Circuitry
Passive Communication Methods
Tag Anti-Collision Protocols
Effective Radiated Power (ERP)
36. Time for an associated tag to be read
Types of Tag Frequencies
Circular Polarized Antenna
Persist Time
Tag Standards
37. Continuous web - no adhesive
Dry Inlay
Microwave Frequency
Power/Attenuation
Adaptive Binary Tree Anti-Collision
38. Used for storing data such as the reader configuration parameters and a list of tag reads
Memory
Foil Stamping
Linear Polarized Reader Antenna
Serial Reader
39. 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
Adaptive Binary Tree Anti-Collision
Creating A Tag
Antenna/Inductor
40. Also called an 'interrogator' - A device that can read from and write data to compatible RFID tags - Also doubles up as a writer
Agile Reader
Flip-chip (Chip-to-Tag)
Microwave Frequency
RFID Reader
41. Process of creating a tag and uniquely associating it with an object
Sensor
Circular Polarized Reader Antenna
Commissioning The Tag
Circular Polarized Antenna
42. Interprets the signal received from reader and controls memory storage and retrieval
Microwave Frequency
Power/Attenuation
Constructive Interference
Processor
43. 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
Slotted ALOHA
UHF
Low Frequency (LF)
Sensor
44. 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
Transmitter
Low Frequency (LF)
Characteristics Of Antennas That Contribute To Tag Readability
RFID Printer
45. Dead zones that surround protrusions in antenna footprint
Sensor
ALOHA
Polarization
Nulls(Voids)
46. Optical and RFID hybrid
Power/Attenuation
Smart Label
Agile Reader
Copper Etching
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)
Transmitter
Commissioning The Tag
Tag Standards
Circular Polarized Antenna
48. 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
Decommissioning The Tag
Receiver
Multipath
49. These are categorized into Aloha based protocols and tree based
ALOHA
Tag Anti-Collision Protocols
Reader Antennas
RFID Reader
50. 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
Autonomous Mode
Flip-chip (Chip-to-Tag)
Creating A Tag
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