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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. Receives signal from reader and radiates a response back to the reader - LF or HF: induction coil - UHF or Microwave Frequency: printed antennas
Characteristics Of Antennas That Contribute To Tag Readability
Integrated Circuit Chips
Memory
Antenna/Inductor
2. Reader transmits a continuous-wave RF signal into the reading environment
Types of tags
Main Components of RFID Tag
Power/Attenuation
Passive Backscatter (Capacitive Coupling)
3. 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
Power Source
Equivalent Isotropic Radiated Power (EIRP)
Polarization
4. 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
Sensor
Coupling Element
Circular Polarized Reader Antenna
Serial Reader
5. 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
Effective Radiated Power (ERP)
Attenuator
UHF
RFID Reader
6. Dead zones that surround protrusions in antenna footprint
RFID Printer
Transmitter
Pattern(Footprint)
Nulls(Voids)
7. Proximity systems (low range -mm) medium range (cm) and long range (m)
Tag Standards
Read range
Decommissioning The Tag
Agile Reader
8. Reader that can operate in different frequencies or can use different tag-to-reader communication protocols (generally stationary)
Agile Reader
Memory
Attenuator
Effective Radiated Power (ERP)
9. Pattern(Footprint) - Power/Attenuation - and Polarization
Decommissioning The Tag
Characteristics Of Antennas That Contribute To Tag Readability
Screen Printing
Processor
10. Inductive coupling and passive backscatter (capacitive coupling)
Low Frequency (LF)
RFID SyCommunication methods
Antenna/Inductor
Tag Anti-Collision Protocols
11. Generation= Timeline of Introduction - Gen 1 & 2 - Gen 2 protocol backward compatible
Receiver
RFID Reader
Tag Generations
Agile Reader
12. In this this antenna type - the RF waves emanate in a linear pattern from the antenna. Waves have only one energy field
Linear Polarized Antenna
Foil Stamping
RFID Printer
Flip-chip (Chip-to-Tag)
13. 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
RFID Printer
Autonomous Mode
Adaptive Binary Tree Anti-Collision
Passive Backscatter (Capacitive Coupling)
14. Die used to "stamp" out the shape of antenna. Take up roller rolls the unused material into waste roll.
Tag Generations
UHF
Foil Stamping
Memory
15. 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...
Tag Collision
Passive Backscatter (Capacitive Coupling)
Creating A Tag
Tag Antenna Construction
16. Time for an associated tag to be read
Sensor
Persist Time
Tag Standards
Passive Backscatter (Capacitive Coupling)
17. IC Chip - Antenna/Inductor - Power Source
Linear Polarized Antenna
Main Components of RFID Tag
Serial Reader
Tag Collision
18. 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
Characteristics Of Antennas That Contribute To Tag Readability
Slotted ALOHA
Coupling Element
19. The orientation of the transmitted electromagnetic field or the direction of oscillation of electromagnetically emitted waves
Antenna/Inductor
Microwave Frequency
Polarization
Read range
20. 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
Power Source
Tag List
Read range
Processor
21. Responsible for implementing the reader protocol to communicate with compatible tags
Power/Attenuation
Antenna/Inductor
UHF
Microprocessor
22. UHF and microwave passive tags
Inductive Coupling
Passive Backscatter (Capacitive Coupling)
Polarization
Passive Communication Methods
23. controls the internal functions under the command of the processor
Interactive Mode
Slotted ALOHA
Control Circuitry
Antenna Footprint
24. When two waves (in phase) impose on each other and enhance the original signal and give rise to protrusions
Foil Stamping
ALOHA
Decommissioning The Tag
Constructive Interference
25. 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
Interactive Mode
Reader Antennas
Memory
Characteristics Of Antennas That Contribute To Tag Readability
26. Similar to guessing a number made of 1's and 0's by guessing each number one at a time
Control Circuitry
Adaptive Binary Tree Anti-Collision
UHF
Equivalent Isotropic Radiated Power (EIRP)
27. The time during which a reader can emit RF energy to read tags
Foil Stamping
Duty Cycle
Creating A Tag
Tag Antenna Construction
28. Continuous web - no adhesive
Passive Backscatter (Capacitive Coupling)
Smart Label
Dry Inlay
Microprocessor
29. 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
Attenuator
Tag
Power/Attenuation
Inductive Coupling
30. Every time a tag is read - it is saved to this
Tag List
Slotted ALOHA
Attenuator
Annunciator
31. Low Frequency(LF) - High Frequency(HF) - Ultra high frequency (UHF) and Microwave frequency
Passive Communication Methods
Circular Polarized Reader Antenna
Types of Tag Frequencies
Persist Time
32. 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.
Tag Standards
Coupling Element
Dry Inlay
Antenna Footprint
33. Tags collide completely or not at all (Theoretically proven maximum utilization= 36.8%)
Slotted ALOHA
Modulation Circuitry
Pattern(Footprint)
Power/Attenuation
34. 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
Low Frequency (LF)
Duty Cycle
Antenna Footprint
PLC
35. Readability of a tag greatly depends on this and the angle at which the tag is presented to the reader
Wet Inlay
RFID Printer
Slotted ALOHA
Polarization
36. Standards = EPC global & ISO 18000 - Different Organizations
Tag Standards
Tag Antenna Construction
Polarization
Transmitter
37. A mechanical device for controlling or moving objects - A programmable logic controller (PLC) - robot arm - mechanical arm - etc.
Autonomous Mode
Actuator
UHF
Tag class
38. Die-cut web adhesive - paper face
Tag Generations
Control Circuitry
Reader Antenna
Tag
39. Optical and RFID hybrid
Types of Tag Frequencies
Circular Polarized Antenna
Smart Label
Actuator
40. 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
Smart Label
Actuator
Antenna Footprint
Tag Anti-Collision Protocols
41. 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.
Tag Standards
Power Source
Flip-chip (Chip-to-Tag)
Receiver
42. 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%)
Receiver
Smart Label
ALOHA
Equivalent Isotropic Radiated Power (EIRP)
43. Used for storing data such as the reader configuration parameters and a list of tag reads
Persist Time
Circular Polarized Reader Antenna
Wet Inlay
Memory
44. Process of creating a tag and uniquely associating it with an object
Destructive Interference
Antenna Footprint
Microwave Frequency
Commissioning The Tag
45. The 3D energy field generated by the antenna (also called reading area)
Pattern(Footprint)
Tag Standards
Persist Time
Circular Polarized Antenna
46. The act of writing the tag data by reader
Attenuator
RFID Printer
Creating A Tag
Persist Time
47. Interprets the signal received from reader and controls memory storage and retrieval
Tag Standards
Reader Collision
Processor
Tag class
48. More than one tag tries to respond to a reader at the same time.
Reader Antennas
Tag Collision
Strap-to-Tag
Serial Reader
49. 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
Tag
Pattern(Footprint)
Sensor
Microwave Frequency
50. '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
Receiver
Characteristics Of Antennas That Contribute To Tag Readability
Control Circuitry
RFID Reader