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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. Measurement of power for radiation of antenna used in US
Attenuator
Tag
Equivalent Isotropic Radiated Power (EIRP)
Microwave Frequency
2. Receives signal from reader and radiates a response back to the reader - LF or HF: induction coil - UHF or Microwave Frequency: printed antennas
Tag Generations
RFID Printer
Antenna/Inductor
Microwave Frequency
3. 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
RFID Reader
Constructive Interference
Copper Etching
4. Dead zones that surround protrusions in antenna footprint
Pattern(Footprint)
Modulation Circuitry
RFID Printer
Nulls(Voids)
5. Low Frequency(LF) - High Frequency(HF) - Ultra high frequency (UHF) and Microwave frequency
Creating A Tag
Multipath
Types of Tag Frequencies
Dry Inlay
6. Brains of the RFID tag
Integrated Circuit Chips
Strap-to-Tag
Autonomous Mode
Power Source
7. 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
Antenna Footprint
Slotted ALOHA
Serial Reader
Low Frequency (LF)
8. 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
Antenna/Inductor
Polarization
Adaptive Binary Tree Anti-Collision
9. In this mode - reader continuously reads tags in its read zone
Pattern(Footprint)
Autonomous Mode
Circular Polarized Reader Antenna
Reader Antenna
10. Divides time into discrete time intervals (slots) . A packet can only be transmitted at the beginning of a slot - reduces the collision duration.
Smart Label
Circular Polarized Reader Antenna
Slotted ALOHA
Processor
11. Every time a tag is read - it is saved to this
Linear Polarized Reader Antenna
Tag List
Memory
UHF
12. 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
Receiver
RFID Reader
Low Frequency (LF)
Reader Antenna
13. When two waves (in phase) impose on each other and enhance the original signal and give rise to protrusions
Passive Communication Methods
Creating A Tag
Constructive Interference
Destructive Interference
14. '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
Effective Radiated Power (ERP)
RFID Reader
ALOHA
Agile Reader
15. Optical and RFID hybrid
Tag class
Smart Label
Nulls(Voids)
Passive Communication Methods
16. Continuous web - no adhesive
RFID Reader
Foil Stamping
Tag Antenna Construction
Dry Inlay
17. The 3D energy field generated by the antenna (also called reading area)
Tag Collision
Low Frequency (LF)
Pattern(Footprint)
Multipath
18. The reflection of reader antenna signals on RF-opaque causes this
Multipath
Autonomous Mode
Slotted ALOHA
Antenna/Inductor
19. Image "burned" into photopolymer layer. All copper removed except where image was burned. Copper antenna goes through additional processes to protect from oxidation
Reader Antennas
Tag Antenna Construction
Main Components of RFID Tag
Copper Etching
20. Class= Functionality - - Class 0 -1 -2 -3 -4 & 5
Control Circuitry
Antenna Footprint
Low Frequency (LF)
Tag class
21. 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
Power/Attenuation
Antenna/Inductor
RFID Printer
Nulls(Voids)
22. 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)
Power Source
Reader Collision
Circular Polarized Antenna
Polarization
23. 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
Types of tags
Antenna Footprint
Attenuator
Main Components of RFID Tag
24. 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
Tag List
Modulation Circuitry
Circular Polarized Reader Antenna
Receiver
25. Used for storing data such as the reader configuration parameters and a list of tag reads
Foil Stamping
Smart Label
Memory
ALOHA
26. IC Chip - Antenna/Inductor - Power Source
Wet Inlay
Equivalent Isotropic Radiated Power (EIRP)
Main Components of RFID Tag
Commissioning The Tag
27. These are categorized into Aloha based protocols and tree based
Wet Inlay
Tag Anti-Collision Protocols
Pattern(Footprint)
Reader Antennas
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.
Control Circuitry
Copper Etching
Decommissioning The Tag
Flip-chip (Chip-to-Tag)
29. In this this antenna type - the RF waves emanate in a linear pattern from the antenna. Waves have only one energy field
Circular Polarized Reader Antenna
Linear Polarized Antenna
Slotted ALOHA
Transmitter
30. Die-cut web with adhesive - film face
Wet Inlay
Polarization
Microprocessor
Copper Etching
31. Receives analog signals from the tag via the reader antenna
Strap-to-Tag
Polarization
Persist Time
Receiver
32. Time for an associated tag to be read
Power Source
Serial Reader
Persist Time
Circular Polarized Antenna
33. Measurement of power for radiation of antenna used in Europe
Effective Radiated Power (ERP)
Serial Reader
RFID Reader
Integrated Circuit Chips
34. 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
Polarization
Interactive Mode
Circular Polarized Reader Antenna
Modulation Circuitry
35. UHF and microwave passive tags
Receiver
Circular Polarized Reader Antenna
Passive Backscatter (Capacitive Coupling)
Tag Standards
36. Pattern(Footprint) - Power/Attenuation - and Polarization
Polarization
Characteristics Of Antennas That Contribute To Tag Readability
Persist Time
Reader Collision
37. Serves as writable or non-writable data storage
Memory
RFID Printer
Annunciator
Copper Etching
38. Reader transmits a continuous-wave RF signal into the reading environment
Passive Backscatter (Capacitive Coupling)
PLC
Stationary Reader
Tag Antenna Construction
39. 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
Tag Anti-Collision Protocols
Characteristics Of Antennas That Contribute To Tag Readability
PLC
Constructive Interference
40. Readability of a tag greatly depends on this and the angle at which the tag is presented to the reader
Polarization
Tag List
Passive Communication Methods
Adaptive Binary Tree Anti-Collision
41. Proximity systems (low range -mm) medium range (cm) and long range (m)
Equivalent Isotropic Radiated Power (EIRP)
Main Components of RFID Tag
Read range
Microprocessor
42. Die-cut web adhesive - paper face
Tag
Dry Inlay
Duty Cycle
ALOHA
43. 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
Effective Radiated Power (ERP)
Stationary Reader
Multipath
44. Responsible for implementing the reader protocol to communicate with compatible tags
Microprocessor
Memory
Transmitter
Linear Polarized Reader Antenna
45. Mount the tiny chip to a strap - Greater handling ability - Possibility to use very small chips - Possibility of higher volume production - Fluidic Self Assembly
Passive Backscatter (Capacitive Coupling)
Creating A Tag
Equivalent Isotropic Radiated Power (EIRP)
Strap-to-Tag
46. 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
Tag List
Reader Collision
Agile Reader
47. Tags collide completely or not at all (Theoretically proven maximum utilization= 36.8%)
Reader Collision
Memory
Slotted ALOHA
Equivalent Isotropic Radiated Power (EIRP)
48. 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
Power Source
Effective Radiated Power (ERP)
Passive Communication Methods
ALOHA
49. The act of writing the tag data by reader
UHF
Tag Anti-Collision Protocols
Autonomous Mode
Creating A Tag
50. To disassociate the tag from a tagged object and optionally destroy it
Tag Standards
Polarization
Memory
Decommissioning The Tag