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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. A mechanical device for controlling or moving objects - A programmable logic controller (PLC) - robot arm - mechanical arm - etc.
Effective Radiated Power (ERP)
Linear Polarized Antenna
Main Components of RFID Tag
Actuator
2. Reader that can operate in different frequencies or can use different tag-to-reader communication protocols (generally stationary)
Reader Collision
RFID Printer
Pattern(Footprint)
Agile Reader
3. Low Frequency(LF) - High Frequency(HF) - Ultra high frequency (UHF) and Microwave frequency
PLC
Control Circuitry
ALOHA
Types of Tag Frequencies
4. When two waves (in phase) impose on each other and enhance the original signal and give rise to protrusions
Constructive Interference
Receiver
Microwave Frequency
Antenna/Inductor
5. Open image in meshed screens. Conductive ink "squeezed" thru open mesh.
Integrated Circuit Chips
Tag Anti-Collision Protocols
Screen Printing
Equivalent Isotropic Radiated Power (EIRP)
6. 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
Power Source
Transmitter
Wet Inlay
7. Proximity systems (low range -mm) medium range (cm) and long range (m)
RFID Reader
Attenuator
Tag class
Read range
8. The orientation of the transmitted electromagnetic field or the direction of oscillation of electromagnetically emitted waves
Foil Stamping
Polarization
Types of Tag Frequencies
Multipath
9. changes signal received from reader to include data that will be transmitted back to the reader
Slotted ALOHA
Read range
Polarization
Modulation Circuitry
10. 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
Duty Cycle
Reader Antenna
Slotted ALOHA
11. Receives signal from reader and radiates a response back to the reader - LF or HF: induction coil - UHF or Microwave Frequency: printed antennas
Coupling Element
Antenna/Inductor
Screen Printing
ALOHA
12. '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
Serial Reader
RFID Reader
Tag Anti-Collision Protocols
Main Components of RFID Tag
13. To disassociate the tag from a tagged object and optionally destroy it
Adaptive Binary Tree Anti-Collision
Decommissioning The Tag
Processor
PLC
14. Time for an associated tag to be read
RFID Reader
Persist Time
Passive Backscatter (Capacitive Coupling)
Reader Antenna
15. Measurement of power for radiation of antenna used in US
Constructive Interference
Effective Radiated Power (ERP)
Equivalent Isotropic Radiated Power (EIRP)
PLC
16. 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
Processor
Stationary Reader
Circular Polarized Antenna
Strap-to-Tag
17. IC Chip - Antenna/Inductor - Power Source
Main Components of RFID Tag
Inductive Coupling
Tag List
Decommissioning The Tag
18. Inductive coupling and passive backscatter (capacitive coupling)
RFID SyCommunication methods
Characteristics Of Antennas That Contribute To Tag Readability
Serial Reader
Reader Antennas
19. 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
Effective Radiated Power (ERP)
Read range
Receiver
20. Pattern(Footprint) - Power/Attenuation - and Polarization
Memory
Characteristics Of Antennas That Contribute To Tag Readability
RFID Reader
Reader Antenna
21. The 3D energy field generated by the antenna (also called reading area)
Tag Anti-Collision Protocols
Characteristics Of Antennas That Contribute To Tag Readability
Pattern(Footprint)
Reader Antenna
22. 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
RFID Reader
Processor
Reader Antennas
UHF
23. Optical and RFID hybrid
Smart Label
Screen Printing
Types of tags
Characteristics Of Antennas That Contribute To Tag Readability
24. Class= Functionality - - Class 0 -1 -2 -3 -4 & 5
Reader Collision
Tag class
Memory
RFID Reader
25. 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
Linear Polarized Antenna
Circular Polarized Antenna
Dry Inlay
26. Die-cut web adhesive - paper face
RFID Reader
Agile Reader
Linear Polarized Antenna
Tag
27. In this mode - reader continuously reads tags in its read zone
Screen Printing
Persist Time
Agile Reader
Autonomous Mode
28. 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
Passive Communication Methods
RFID Reader
Smart Label
29. Die-cut web with adhesive - film face
Commissioning The Tag
Integrated Circuit Chips
Control Circuitry
Wet Inlay
30. 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
Polarization
Linear Polarized Antenna
Inductive Coupling
Annunciator
31. Used for storing data such as the reader configuration parameters and a list of tag reads
Reader Collision
Receiver
Memory
Circular Polarized Reader Antenna
32. Image "burned" into photopolymer layer. All copper removed except where image was burned. Copper antenna goes through additional processes to protect from oxidation
Copper Etching
Power/Attenuation
Smart Label
Adaptive Binary Tree Anti-Collision
33. 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
Passive Communication Methods
Microprocessor
ALOHA
Interactive Mode
34. 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
Modulation Circuitry
RFID Reader
Antenna Footprint
Power/Attenuation
35. 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...
ALOHA
Tag class
Tag Antenna Construction
Control Circuitry
36. 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
Coupling Element
ALOHA
Reader Antenna
Duty Cycle
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
ALOHA
Commissioning The Tag
Microprocessor
Linear Polarized Reader Antenna
38. Used to transmit AC power and the clock cycle via its antennas to the tags in its read zone
Creating A Tag
Transmitter
Read range
Passive Communication Methods
39. 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.
Flip-chip (Chip-to-Tag)
Serial Reader
PLC
Tag Antenna Construction
40. Neighboring readers interrogate a tag simultaneously (can be easily solved because they can detect this and communicate to each other)
Serial Reader
Tag Collision
Tag
Reader Collision
41. UHF and microwave passive tags
Passive Backscatter (Capacitive Coupling)
Interactive Mode
Dry Inlay
Foil Stamping
42. 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)
Constructive Interference
Wet Inlay
Passive Communication Methods
Circular Polarized Antenna
43. Divides time into discrete time intervals (slots) . A packet can only be transmitted at the beginning of a slot - reduces the collision duration.
Slotted ALOHA
Pattern(Footprint)
Modulation Circuitry
RFID SyCommunication methods
44. 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
Integrated Circuit Chips
Tag Generations
Polarization
45. Reader transmits a continuous-wave RF signal into the reading environment
Polarization
Passive Backscatter (Capacitive Coupling)
Integrated Circuit Chips
Antenna Footprint
46. Standards = EPC global & ISO 18000 - Different Organizations
Types of Tag Frequencies
Annunciator
Smart Label
Tag Standards
47. 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%)
ALOHA
Tag Antenna Construction
Equivalent Isotropic Radiated Power (EIRP)
RFID Printer
48. Responsible for implementing the reader protocol to communicate with compatible tags
Microprocessor
Processor
Memory
Commissioning The Tag
49. Brains of the RFID tag
Destructive Interference
Reader Antennas
Circular Polarized Reader Antenna
Integrated Circuit Chips
50. Interprets the signal received from reader and controls memory storage and retrieval
Processor
Smart Label
Flip-chip (Chip-to-Tag)
Multipath