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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. An electronic signal or indicator - Audible alarms - strobes - light stacks - etc.
Foil Stamping
Sensor
Tag Anti-Collision Protocols
Annunciator
2. To disassociate the tag from a tagged object and optionally destroy it
Nulls(Voids)
Memory
Decommissioning The Tag
RFID Reader
3. 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
Serial Reader
Reader Antenna
RFID Reader
4. When two waves (out of phase) impose on each other and the original signal is cancelled. Nulls are created s a result
Polarization
Tag Anti-Collision Protocols
Foil Stamping
Destructive Interference
5. UHF and microwave passive tags
Passive Communication Methods
Passive Backscatter (Capacitive Coupling)
Copper Etching
ALOHA
6. Proximity systems (low range -mm) medium range (cm) and long range (m)
Read range
Types of tags
Tag Collision
Serial Reader
7. 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
Low Frequency (LF)
Power/Attenuation
Wet Inlay
Strap-to-Tag
8. Reader transmits a continuous-wave RF signal into the reading environment
Passive Backscatter (Capacitive Coupling)
Equivalent Isotropic Radiated Power (EIRP)
Smart Label
Autonomous Mode
9. 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
Slotted ALOHA
Autonomous Mode
Tag Collision
10. Divides time into discrete time intervals (slots) . A packet can only be transmitted at the beginning of a slot - reduces the collision duration.
Stationary Reader
Slotted ALOHA
Main Components of RFID Tag
Creating A Tag
11. Receives analog signals from the tag via the reader antenna
Receiver
Dry Inlay
Integrated Circuit Chips
Copper Etching
12. When two waves (in phase) impose on each other and enhance the original signal and give rise to protrusions
Antenna Footprint
Types of Tag Frequencies
Constructive Interference
Serial Reader
13. Pattern(Footprint) - Power/Attenuation - and Polarization
Nulls(Voids)
Read range
Characteristics Of Antennas That Contribute To Tag Readability
Wet Inlay
14. Standards = EPC global & ISO 18000 - Different Organizations
Types of Tag Frequencies
Reader Collision
Circular Polarized Reader Antenna
Tag Standards
15. Measurement of power for radiation of antenna used in Europe
Polarization
Memory
Stationary Reader
Effective Radiated Power (ERP)
16. Process of creating a tag and uniquely associating it with an object
Microwave Frequency
Reader Antennas
Commissioning The Tag
Sensor
17. Similar to guessing a number made of 1's and 0's by guessing each number one at a time
Control Circuitry
PLC
Agile Reader
Adaptive Binary Tree Anti-Collision
18. 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
Serial Reader
Integrated Circuit Chips
Flip-chip (Chip-to-Tag)
Stationary Reader
19. 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
Coupling Element
Multipath
Constructive Interference
20. A mechanical device for controlling or moving objects - A programmable logic controller (PLC) - robot arm - mechanical arm - etc.
Actuator
Attenuator
Processor
Reader Collision
21. 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
Decommissioning The Tag
Foil Stamping
Slotted ALOHA
22. Tags collide completely or not at all (Theoretically proven maximum utilization= 36.8%)
Tag Antenna Construction
Main Components of RFID Tag
Sensor
Slotted ALOHA
23. Die-cut web with adhesive - film face
Wet Inlay
Microwave Frequency
Multipath
Reader Collision
24. controls the internal functions under the command of the processor
Microprocessor
Tag List
Commissioning The Tag
Control Circuitry
25. 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
UHF
Duty Cycle
ALOHA
26. The orientation of the transmitted electromagnetic field or the direction of oscillation of electromagnetically emitted waves
Polarization
ALOHA
Constructive Interference
Circular Polarized Reader Antenna
27. Also called an 'interrogator' - A device that can read from and write data to compatible RFID tags - Also doubles up as a writer
RFID Reader
Characteristics Of Antennas That Contribute To Tag Readability
Tag List
Persist Time
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
Reader Antennas
Reader Collision
Tag Generations
29. Die-cut web adhesive - paper face
Tag
Sensor
Copper Etching
Destructive Interference
30. 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)
Persist Time
Low Frequency (LF)
Circular Polarized Antenna
Reader Antennas
31. 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
Flip-chip (Chip-to-Tag)
PLC
Polarization
32. 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.
Interactive Mode
Adaptive Binary Tree Anti-Collision
RFID Reader
Flip-chip (Chip-to-Tag)
33. 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
Reader Antennas
RFID SyCommunication methods
Microprocessor
Circular Polarized Antenna
34. Low Frequency(LF) - High Frequency(HF) - Ultra high frequency (UHF) and Microwave frequency
Stationary Reader
Constructive Interference
Reader Antenna
Types of Tag Frequencies
35. Responsible for implementing the reader protocol to communicate with compatible tags
RFID Printer
Antenna/Inductor
Reader Antenna
Microprocessor
36. Optical and RFID hybrid
Reader Antenna
Tag List
Tag Standards
Smart Label
37. Inductive coupling and passive backscatter (capacitive coupling)
RFID SyCommunication methods
RFID Reader
Control Circuitry
Inductive Coupling
38. 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
Characteristics Of Antennas That Contribute To Tag Readability
Constructive Interference
Circular Polarized Reader Antenna
39. Continuous web - no adhesive
Modulation Circuitry
Transmitter
Constructive Interference
Dry Inlay
40. Used for storing data such as the reader configuration parameters and a list of tag reads
Types of Tag Frequencies
Memory
Tag Anti-Collision Protocols
Inductive Coupling
41. These are categorized into Aloha based protocols and tree based
Smart Label
Tag Anti-Collision Protocols
Wet Inlay
Types of tags
42. Reader that can operate in different frequencies or can use different tag-to-reader communication protocols (generally stationary)
Antenna Footprint
Agile Reader
Memory
Equivalent Isotropic Radiated Power (EIRP)
43. Time for an associated tag to be read
Dry Inlay
Foil Stamping
RFID SyCommunication methods
Persist Time
44. 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
Interactive Mode
PLC
Passive Backscatter (Capacitive Coupling)
Effective Radiated Power (ERP)
45. Neighboring readers interrogate a tag simultaneously (can be easily solved because they can detect this and communicate to each other)
Reader Collision
Copper Etching
Coupling Element
Passive Communication Methods
46. In this this antenna type - the RF waves emanate in a linear pattern from the antenna. Waves have only one energy field
Constructive Interference
Passive Backscatter (Capacitive Coupling)
Linear Polarized Antenna
Copper Etching
47. 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
Adaptive Binary Tree Anti-Collision
Polarization
Antenna/Inductor
48. 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
Low Frequency (LF)
Main Components of RFID Tag
Multipath
RFID Reader
49. 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
Persist Time
Tag Anti-Collision Protocols
Reader Antennas
50. 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
Wet Inlay
RFID Printer
Interactive Mode
Memory