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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. 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
Multipath
Power Source
Constructive Interference
Reader Antennas
2. Serves as writable or non-writable data storage
Tag Standards
Types of Tag Frequencies
Memory
Interactive Mode
3. Inductive coupling and passive backscatter (capacitive coupling)
Passive Communication Methods
Slotted ALOHA
Interactive Mode
Smart Label
4. Class= Functionality - - Class 0 -1 -2 -3 -4 & 5
Memory
Tag class
Passive Backscatter (Capacitive Coupling)
Stationary Reader
5. 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...
Serial Reader
Characteristics Of Antennas That Contribute To Tag Readability
Slotted ALOHA
Tag Antenna Construction
6. Used to transmit AC power and the clock cycle via its antennas to the tags in its read zone
Antenna Footprint
Tag Antenna Construction
Effective Radiated Power (ERP)
Transmitter
7. Standards = EPC global & ISO 18000 - Different Organizations
Serial Reader
Types of tags
Tag Collision
Tag Standards
8. Can reduce power by placing this device in the transmission line. As a result - the antennas signal is reduced and the read range diminished. Proves useful in situations where the read zone needs to be constrained as a part of system requirements so
Attenuator
Low Frequency (LF)
ALOHA
Creating A Tag
9. 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
Microprocessor
Antenna Footprint
RFID SyCommunication methods
Types of Tag Frequencies
10. Low Frequency(LF) - High Frequency(HF) - Ultra high frequency (UHF) and Microwave frequency
Types of Tag Frequencies
UHF
Effective Radiated Power (ERP)
Modulation Circuitry
11. 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
Modulation Circuitry
ALOHA
Sensor
Duty Cycle
12. The 3D energy field generated by the antenna (also called reading area)
Reader Antennas
Serial Reader
Pattern(Footprint)
Strap-to-Tag
13. 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
Types of Tag Frequencies
Persist Time
Stationary Reader
Reader Collision
14. Every time a tag is read - it is saved to this
Smart Label
Serial Reader
Tag List
Memory
15. Dead zones that surround protrusions in antenna footprint
Passive Backscatter (Capacitive Coupling)
Tag Anti-Collision Protocols
Nulls(Voids)
Inductive Coupling
16. Readability of a tag greatly depends on this and the angle at which the tag is presented to the reader
Read range
Reader Collision
Polarization
Nulls(Voids)
17. The orientation of the transmitted electromagnetic field or the direction of oscillation of electromagnetically emitted waves
Smart Label
Polarization
Power Source
Slotted ALOHA
18. Tags collide completely or not at all (Theoretically proven maximum utilization= 36.8%)
Memory
Serial Reader
Antenna/Inductor
Slotted ALOHA
19. Open image in meshed screens. Conductive ink "squeezed" thru open mesh.
Interactive Mode
Screen Printing
Main Components of RFID Tag
Tag Antenna Construction
20. Proximity systems (low range -mm) medium range (cm) and long range (m)
Constructive Interference
Coupling Element
Circular Polarized Reader Antenna
Read range
21. Reader transmits a continuous-wave RF signal into the reading environment
Low Frequency (LF)
Microwave Frequency
Flip-chip (Chip-to-Tag)
Passive Backscatter (Capacitive Coupling)
22. 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
Characteristics Of Antennas That Contribute To Tag Readability
Microwave Frequency
Coupling Element
23. Interprets the signal received from reader and controls memory storage and retrieval
Destructive Interference
Attenuator
Integrated Circuit Chips
Processor
24. Reader that can operate in different frequencies or can use different tag-to-reader communication protocols (generally stationary)
Agile Reader
Nulls(Voids)
ALOHA
ALOHA
25. The act of writing the tag data by reader
Autonomous Mode
Screen Printing
Creating A Tag
UHF
26. IC Chip - Antenna/Inductor - Power Source
Integrated Circuit Chips
Slotted ALOHA
Main Components of RFID Tag
Nulls(Voids)
27. Brains of the RFID tag
Integrated Circuit Chips
Types of Tag Frequencies
Modulation Circuitry
Constructive Interference
28. 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.
Polarization
Flip-chip (Chip-to-Tag)
Tag Anti-Collision Protocols
Characteristics Of Antennas That Contribute To Tag Readability
29. 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
Passive Backscatter (Capacitive Coupling)
Antenna Footprint
Serial Reader
Wet Inlay
30. 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
Tag Anti-Collision Protocols
Strap-to-Tag
Nulls(Voids)
UHF
31. 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
Slotted ALOHA
Transmitter
Equivalent Isotropic Radiated Power (EIRP)
PLC
32. Pattern(Footprint) - Power/Attenuation - and Polarization
Slotted ALOHA
Linear Polarized Antenna
Characteristics Of Antennas That Contribute To Tag Readability
RFID Reader
33. Receives signal from reader and radiates a response back to the reader - LF or HF: induction coil - UHF or Microwave Frequency: printed antennas
Tag class
Antenna/Inductor
Flip-chip (Chip-to-Tag)
Persist Time
34. UHF and microwave passive tags
Nulls(Voids)
Passive Backscatter (Capacitive Coupling)
Foil Stamping
ALOHA
35. 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
Creating A Tag
Receiver
Nulls(Voids)
36. Smart cards - smart label - etc.
Coupling Element
Linear Polarized Antenna
Linear Polarized Reader Antenna
Types of tags
37. 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
Tag Generations
Microprocessor
Autonomous Mode
Linear Polarized Reader Antenna
38. When two waves (out of phase) impose on each other and the original signal is cancelled. Nulls are created s a result
Sensor
Destructive Interference
RFID Reader
Attenuator
39. Generation= Timeline of Introduction - Gen 1 & 2 - Gen 2 protocol backward compatible
Types of Tag Frequencies
Tag Generations
Inductive Coupling
Dry Inlay
40. Die-cut web with adhesive - film face
Inductive Coupling
Characteristics Of Antennas That Contribute To Tag Readability
Actuator
Wet Inlay
41. Used for storing data such as the reader configuration parameters and a list of tag reads
Antenna Footprint
Creating A Tag
Transmitter
Memory
42. 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
Integrated Circuit Chips
Destructive Interference
Multipath
RFID Printer
43. The reflection of reader antenna signals on RF-opaque causes this
Tag List
Types of tags
Antenna/Inductor
Multipath
44. 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
Persist Time
Characteristics Of Antennas That Contribute To Tag Readability
Constructive Interference
Circular Polarized Reader Antenna
45. 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
ALOHA
Power/Attenuation
Inductive Coupling
Tag class
46. changes signal received from reader to include data that will be transmitted back to the reader
Tag Standards
Modulation Circuitry
Nulls(Voids)
Serial Reader
47. Measurement of power for radiation of antenna used in Europe
Effective Radiated Power (ERP)
Tag Antenna Construction
Main Components of RFID Tag
Inductive Coupling
48. An electronic signal or indicator - Audible alarms - strobes - light stacks - etc.
Processor
Annunciator
RFID Reader
Flip-chip (Chip-to-Tag)
49. Measurement of power for radiation of antenna used in US
Serial Reader
Polarization
Equivalent Isotropic Radiated Power (EIRP)
Copper Etching
50. 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 Generations
Reader Collision
RFID Reader
Reader Antennas