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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. In this mode - reader continuously reads tags in its read zone
Autonomous Mode
Passive Backscatter (Capacitive Coupling)
RFID SyCommunication methods
Memory
2. Reader that can operate in different frequencies or can use different tag-to-reader communication protocols (generally stationary)
Adaptive Binary Tree Anti-Collision
Agile Reader
Characteristics Of Antennas That Contribute To Tag Readability
Processor
3. Pattern(Footprint) - Power/Attenuation - and Polarization
Constructive Interference
Memory
Characteristics Of Antennas That Contribute To Tag Readability
Circular Polarized Reader Antenna
4. 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
Main Components of RFID Tag
Polarization
Read range
Power/Attenuation
5. In this this antenna type - the RF waves emanate in a linear pattern from the antenna. Waves have only one energy field
ALOHA
Coupling Element
Memory
Linear Polarized Antenna
6. Readability of a tag greatly depends on this and the angle at which the tag is presented to the reader
Polarization
RFID SyCommunication methods
Persist Time
Stationary Reader
7. 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 Antenna Construction
Microwave Frequency
Agile Reader
Coupling Element
8. An electronic signal or indicator - Audible alarms - strobes - light stacks - etc.
Tag Anti-Collision Protocols
Annunciator
ALOHA
Destructive Interference
9. Smart cards - smart label - etc.
Power/Attenuation
Memory
Types of tags
RFID SyCommunication methods
10. 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
Annunciator
ALOHA
Reader Antenna
Transmitter
11. 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
Multipath
Tag Antenna Construction
Types of tags
Circular Polarized Reader Antenna
12. controls the internal functions under the command of the processor
Tag Anti-Collision Protocols
Passive Communication Methods
Control Circuitry
Multipath
13. 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
Passive Backscatter (Capacitive Coupling)
Receiver
Multipath
PLC
14. 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
ALOHA
Reader Antenna
Tag List
15. The reflection of reader antenna signals on RF-opaque causes this
Microprocessor
Strap-to-Tag
Serial Reader
Multipath
16. The 3D energy field generated by the antenna (also called reading area)
Commissioning The Tag
Pattern(Footprint)
Tag Generations
Autonomous Mode
17. 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 Generations
ALOHA
Flip-chip (Chip-to-Tag)
Control Circuitry
18. Continuous web - no adhesive
Foil Stamping
Polarization
Slotted ALOHA
Dry Inlay
19. 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
Stationary Reader
RFID Printer
Passive Backscatter (Capacitive Coupling)
Tag Collision
20. Used for storing data such as the reader configuration parameters and a list of tag reads
Memory
Tag class
Duty Cycle
Read range
21. 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
Antenna Footprint
Integrated Circuit Chips
Types of Tag Frequencies
Tag Collision
22. Every time a tag is read - it is saved to this
Reader Antenna
ALOHA
Tag List
UHF
23. Optical and RFID hybrid
Modulation Circuitry
Reader Antenna
Smart Label
Reader Collision
24. Also called an 'interrogator' - A device that can read from and write data to compatible RFID tags - Also doubles up as a writer
Adaptive Binary Tree Anti-Collision
Destructive Interference
RFID Reader
Interactive Mode
25. The act of writing the tag data by reader
Creating A Tag
Dry Inlay
Linear Polarized Antenna
Slotted ALOHA
26. More than one tag tries to respond to a reader at the same time.
Copper Etching
Reader Antennas
Effective Radiated Power (ERP)
Tag Collision
27. 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
Persist Time
Serial Reader
Smart Label
Control Circuitry
28. 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
Slotted ALOHA
Modulation Circuitry
Attenuator
Receiver
29. '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
Decommissioning The Tag
Reader Collision
RFID Reader
Memory
30. Similar to guessing a number made of 1's and 0's by guessing each number one at a time
Power Source
Adaptive Binary Tree Anti-Collision
Creating A Tag
Receiver
31. Time for an associated tag to be read
Persist Time
Wet Inlay
Reader Collision
Circular Polarized Reader Antenna
32. Interprets the signal received from reader and controls memory storage and retrieval
Receiver
Multipath
ALOHA
Processor
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
Smart Label
Constructive Interference
Flip-chip (Chip-to-Tag)
Interactive Mode
34. Open image in meshed screens. Conductive ink "squeezed" thru open mesh.
Screen Printing
Tag Generations
RFID Reader
Autonomous Mode
35. Measurement of power for radiation of antenna used in US
Integrated Circuit Chips
Equivalent Isotropic Radiated Power (EIRP)
Passive Backscatter (Capacitive Coupling)
Tag
36. 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...
Stationary Reader
Tag Antenna Construction
Dry Inlay
Memory
37. Class= Functionality - - Class 0 -1 -2 -3 -4 & 5
Tag class
Foil Stamping
Control Circuitry
Linear Polarized Antenna
38. Receives analog signals from the tag via the reader antenna
Types of tags
Receiver
Duty Cycle
Memory
39. 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.
Wet Inlay
Effective Radiated Power (ERP)
Coupling Element
Tag Antenna Construction
40. 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
Tag Generations
RFID Printer
Passive Backscatter (Capacitive Coupling)
Inductive Coupling
41. The time during which a reader can emit RF energy to read tags
Reader Antenna
Duty Cycle
Equivalent Isotropic Radiated Power (EIRP)
Control Circuitry
42. Reader transmits a continuous-wave RF signal into the reading environment
Sensor
Passive Backscatter (Capacitive Coupling)
Passive Communication Methods
Tag Anti-Collision Protocols
43. Used to transmit AC power and the clock cycle via its antennas to the tags in its read zone
Constructive Interference
Slotted ALOHA
Duty Cycle
Transmitter
44. The orientation of the transmitted electromagnetic field or the direction of oscillation of electromagnetically emitted waves
Circular Polarized Reader Antenna
Polarization
Attenuator
Microprocessor
45. 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
Circular Polarized Antenna
Tag Generations
Nulls(Voids)
RFID Printer
46. These are categorized into Aloha based protocols and tree based
Screen Printing
Duty Cycle
Tag Anti-Collision Protocols
Antenna/Inductor
47. Proximity systems (low range -mm) medium range (cm) and long range (m)
Sensor
Circular Polarized Antenna
Read range
Processor
48. Mount the tiny chip to a strap - Greater handling ability - Possibility to use very small chips - Possibility of higher volume production - Fluidic Self Assembly
Smart Label
Strap-to-Tag
Commissioning The Tag
Modulation Circuitry
49. UHF and microwave passive tags
Passive Backscatter (Capacitive Coupling)
Multipath
Autonomous Mode
Flip-chip (Chip-to-Tag)
50. Standards = EPC global & ISO 18000 - Different Organizations
Tag Standards
Creating A Tag
Microprocessor
Strap-to-Tag