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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. 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
Polarization
Tag Generations
Receiver
2. 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
Antenna/Inductor
Nulls(Voids)
Linear Polarized Antenna
3. 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
Strap-to-Tag
Serial Reader
ALOHA
4. 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
Agile Reader
PLC
Screen Printing
Microprocessor
5. Similar to guessing a number made of 1's and 0's by guessing each number one at a time
Tag
Low Frequency (LF)
Main Components of RFID Tag
Adaptive Binary Tree Anti-Collision
6. Measurement of power for radiation of antenna used in US
Equivalent Isotropic Radiated Power (EIRP)
Tag Standards
Circular Polarized Reader Antenna
Agile Reader
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...
Memory
Types of Tag Frequencies
Strap-to-Tag
Tag Antenna Construction
8. The time during which a reader can emit RF energy to read tags
Circular Polarized Antenna
Duty Cycle
Slotted ALOHA
Equivalent Isotropic Radiated Power (EIRP)
9. Interprets the signal received from reader and controls memory storage and retrieval
Antenna Footprint
Passive Backscatter (Capacitive Coupling)
Processor
Nulls(Voids)
10. An electronic signal or indicator - Audible alarms - strobes - light stacks - etc.
Annunciator
Effective Radiated Power (ERP)
Attenuator
Equivalent Isotropic Radiated Power (EIRP)
11. 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
Memory
Transmitter
Reader Antennas
PLC
12. 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
Receiver
Antenna/Inductor
Circular Polarized Reader Antenna
Passive Backscatter (Capacitive Coupling)
13. Brains of the RFID tag
Antenna Footprint
Integrated Circuit Chips
Tag class
Receiver
14. Inductive coupling and passive backscatter (capacitive coupling)
Passive Communication Methods
Linear Polarized Reader Antenna
Creating A Tag
Effective Radiated Power (ERP)
15. Generation= Timeline of Introduction - Gen 1 & 2 - Gen 2 protocol backward compatible
Tag Generations
Control Circuitry
Foil Stamping
Sensor
16. 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
Smart Label
Slotted ALOHA
ALOHA
Low Frequency (LF)
17. 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
ALOHA
Antenna/Inductor
Power/Attenuation
Copper Etching
18. Mount the tiny chip to a strap - Greater handling ability - Possibility to use very small chips - Possibility of higher volume production - Fluidic Self Assembly
Antenna/Inductor
Strap-to-Tag
PLC
ALOHA
19. Class= Functionality - - Class 0 -1 -2 -3 -4 & 5
Tag class
Tag List
ALOHA
ALOHA
20. Serves as writable or non-writable data storage
UHF
Memory
Passive Communication Methods
Effective Radiated Power (ERP)
21. Reader that can operate in different frequencies or can use different tag-to-reader communication protocols (generally stationary)
Agile Reader
Destructive Interference
Memory
Creating A Tag
22. Used for storing data such as the reader configuration parameters and a list of tag reads
PLC
Memory
Actuator
Persist Time
23. 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
Receiver
Microwave Frequency
Characteristics Of Antennas That Contribute To Tag Readability
Adaptive Binary Tree Anti-Collision
24. In this mode - reader continuously reads tags in its read zone
Control Circuitry
Circular Polarized Reader Antenna
Memory
Autonomous Mode
25. Continuous web - no adhesive
Microwave Frequency
Dry Inlay
Actuator
Receiver
26. Readability of a tag greatly depends on this and the angle at which the tag is presented to the reader
Circular Polarized Antenna
Polarization
Microwave Frequency
Passive Backscatter (Capacitive Coupling)
27. 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
Tag Generations
Interactive Mode
Tag List
Slotted ALOHA
28. Receives analog signals from the tag via the reader antenna
Receiver
Circular Polarized Reader Antenna
Wet Inlay
Coupling Element
29. 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
Agile Reader
Memory
Actuator
Linear Polarized Reader Antenna
30. Pattern(Footprint) - Power/Attenuation - and Polarization
Screen Printing
Microprocessor
Tag Antenna Construction
Characteristics Of Antennas That Contribute To Tag Readability
31. 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
Reader Antenna
Interactive Mode
RFID Printer
Copper Etching
32. Used to transmit AC power and the clock cycle via its antennas to the tags in its read zone
Low Frequency (LF)
Polarization
Attenuator
Transmitter
33. Die-cut web with adhesive - film face
Wet Inlay
Types of Tag Frequencies
Power Source
Linear Polarized Reader Antenna
34. In this this antenna type - the RF waves emanate in a linear pattern from the antenna. Waves have only one energy field
Interactive Mode
Polarization
Linear Polarized Antenna
Characteristics Of Antennas That Contribute To Tag Readability
35. More than one tag tries to respond to a reader at the same time.
Tag
Tag Collision
Reader Antennas
Transmitter
36. controls the internal functions under the command of the processor
Control Circuitry
Tag
Adaptive Binary Tree Anti-Collision
Microprocessor
37. Proximity systems (low range -mm) medium range (cm) and long range (m)
Decommissioning The Tag
Read range
Agile Reader
RFID Printer
38. 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.
Antenna/Inductor
Destructive Interference
Equivalent Isotropic Radiated Power (EIRP)
Flip-chip (Chip-to-Tag)
39. When two waves (out of phase) impose on each other and the original signal is cancelled. Nulls are created s a result
Tag Standards
Serial Reader
Destructive Interference
Main Components of RFID Tag
40. 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.
Stationary Reader
ALOHA
Coupling Element
Slotted ALOHA
41. Neighboring readers interrogate a tag simultaneously (can be easily solved because they can detect this and communicate to each other)
Effective Radiated Power (ERP)
Linear Polarized Antenna
Reader Collision
Creating A Tag
42. 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
Serial Reader
Creating A Tag
Multipath
43. The reflection of reader antenna signals on RF-opaque causes this
RFID Reader
Annunciator
Effective Radiated Power (ERP)
Multipath
44. Optical and RFID hybrid
Smart Label
Tag List
Autonomous Mode
Tag Antenna Construction
45. '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
Duty Cycle
Main Components of RFID Tag
RFID Reader
Passive Communication Methods
46. 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
RFID Printer
Antenna Footprint
Duty Cycle
Slotted ALOHA
47. 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
Slotted ALOHA
Power/Attenuation
RFID Reader
Stationary Reader
48. 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
Passive Communication Methods
Annunciator
Strap-to-Tag
49. Die-cut web adhesive - paper face
Tag
Slotted ALOHA
Control Circuitry
Types of tags
50. Inductive coupling and passive backscatter (capacitive coupling)
Decommissioning The Tag
Destructive Interference
PLC
RFID SyCommunication methods
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