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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. 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
Antenna/Inductor
Tag class
Microwave Frequency
Foil Stamping
2. 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
Foil Stamping
Transmitter
Reader Antennas
3. When two waves (out of phase) impose on each other and the original signal is cancelled. Nulls are created s a result
Destructive Interference
RFID SyCommunication methods
Nulls(Voids)
Wet Inlay
4. The reflection of reader antenna signals on RF-opaque causes this
Multipath
Reader Collision
Duty Cycle
Destructive Interference
5. An electronic signal or indicator - Audible alarms - strobes - light stacks - etc.
Types of Tag Frequencies
Annunciator
Flip-chip (Chip-to-Tag)
Multipath
6. 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
Receiver
Passive Backscatter (Capacitive Coupling)
Integrated Circuit Chips
7. 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)
Foil Stamping
Circular Polarized Antenna
Constructive Interference
Tag Collision
8. Interprets the signal received from reader and controls memory storage and retrieval
Stationary Reader
Processor
Attenuator
Equivalent Isotropic Radiated Power (EIRP)
9. Continuous web - no adhesive
Transmitter
Tag
Dry Inlay
Tag Standards
10. A mechanical device for controlling or moving objects - A programmable logic controller (PLC) - robot arm - mechanical arm - etc.
Actuator
Reader Collision
Sensor
Constructive Interference
11. Tags collide completely or not at all (Theoretically proven maximum utilization= 36.8%)
Equivalent Isotropic Radiated Power (EIRP)
Slotted ALOHA
Linear Polarized Antenna
Reader Antenna
12. Die-cut web adhesive - paper face
Antenna/Inductor
Tag
Polarization
Circular Polarized Antenna
13. Image "burned" into photopolymer layer. All copper removed except where image was burned. Copper antenna goes through additional processes to protect from oxidation
Linear Polarized Reader Antenna
Copper Etching
Destructive Interference
Tag class
14. These are categorized into Aloha based protocols and tree based
Memory
Tag Anti-Collision Protocols
Tag Generations
Tag List
15. 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
Tag Anti-Collision Protocols
Types of Tag Frequencies
Main Components of RFID Tag
16. Smart cards - smart label - etc.
Microprocessor
Flip-chip (Chip-to-Tag)
Circular Polarized Antenna
Types of tags
17. 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
Pattern(Footprint)
Integrated Circuit Chips
Serial Reader
Types of Tag Frequencies
18. 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
RFID Printer
Circular Polarized Antenna
Main Components of RFID Tag
Attenuator
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
Tag Standards
Constructive Interference
UHF
Strap-to-Tag
20. To disassociate the tag from a tagged object and optionally destroy it
Decommissioning The Tag
Tag Anti-Collision Protocols
Agile Reader
Wet Inlay
21. 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
Flip-chip (Chip-to-Tag)
Low Frequency (LF)
Effective Radiated Power (ERP)
Stationary Reader
22. The 3D energy field generated by the antenna (also called reading area)
RFID Reader
Circular Polarized Reader Antenna
Equivalent Isotropic Radiated Power (EIRP)
Pattern(Footprint)
23. Receives analog signals from the tag via the reader antenna
Receiver
Creating A Tag
RFID Reader
Sensor
24. Pattern(Footprint) - Power/Attenuation - and Polarization
Foil Stamping
Characteristics Of Antennas That Contribute To Tag Readability
Reader Antennas
Tag Standards
25. 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
Inductive Coupling
ALOHA
Interactive Mode
Low Frequency (LF)
26. Receives signal from reader and radiates a response back to the reader - LF or HF: induction coil - UHF or Microwave Frequency: printed antennas
Memory
Antenna/Inductor
Polarization
Copper Etching
27. changes signal received from reader to include data that will be transmitted back to the reader
Tag Collision
Modulation Circuitry
Sensor
Low Frequency (LF)
28. Generation= Timeline of Introduction - Gen 1 & 2 - Gen 2 protocol backward compatible
ALOHA
Control Circuitry
Passive Communication Methods
Tag Generations
29. Serves as writable or non-writable data storage
ALOHA
Strap-to-Tag
Memory
PLC
30. Neighboring readers interrogate a tag simultaneously (can be easily solved because they can detect this and communicate to each other)
Reader Collision
Characteristics Of Antennas That Contribute To Tag Readability
Microwave Frequency
Pattern(Footprint)
31. Die used to "stamp" out the shape of antenna. Take up roller rolls the unused material into waste roll.
ALOHA
Tag
Polarization
Foil Stamping
32. 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
RFID Reader
Effective Radiated Power (ERP)
Integrated Circuit Chips
Power Source
33. The orientation of the transmitted electromagnetic field or the direction of oscillation of electromagnetically emitted waves
Actuator
Polarization
Flip-chip (Chip-to-Tag)
Circular Polarized Antenna
34. Measurement of power for radiation of antenna used in Europe
Pattern(Footprint)
Effective Radiated Power (ERP)
Tag List
Tag Antenna Construction
35. The time during which a reader can emit RF energy to read tags
Memory
Duty Cycle
Dry Inlay
Destructive Interference
36. 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 Antenna Construction
PLC
Multipath
Reader Collision
37. 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
Power/Attenuation
Passive Backscatter (Capacitive Coupling)
Tag List
Actuator
38. 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 Standards
Tag Antenna Construction
Copper Etching
Tag List
39. Dead zones that surround protrusions in antenna footprint
Circular Polarized Antenna
Foil Stamping
Nulls(Voids)
Wet Inlay
40. Responsible for implementing the reader protocol to communicate with compatible tags
Polarization
Decommissioning The Tag
Multipath
Microprocessor
41. Used for storing data such as the reader configuration parameters and a list of tag reads
Inductive Coupling
Persist Time
Memory
Control Circuitry
42. IC Chip - Antenna/Inductor - Power Source
ALOHA
Main Components of RFID Tag
RFID Reader
Passive Backscatter (Capacitive Coupling)
43. Reader that can operate in different frequencies or can use different tag-to-reader communication protocols (generally stationary)
Circular Polarized Antenna
Attenuator
Agile Reader
Circular Polarized Reader Antenna
44. 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
Decommissioning The Tag
RFID Reader
Duty Cycle
ALOHA
45. '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
Screen Printing
Tag Antenna Construction
Read range
RFID Reader
46. Low Frequency(LF) - High Frequency(HF) - Ultra high frequency (UHF) and Microwave frequency
Flip-chip (Chip-to-Tag)
Types of Tag Frequencies
UHF
Transmitter
47. Open image in meshed screens. Conductive ink "squeezed" thru open mesh.
Circular Polarized Reader Antenna
Constructive Interference
Passive Communication Methods
Screen Printing
48. Used to transmit AC power and the clock cycle via its antennas to the tags in its read zone
Effective Radiated Power (ERP)
RFID Reader
Receiver
Transmitter
49. 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
Polarization
Foil Stamping
Circular Polarized Reader Antenna
Control Circuitry
50. 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
Inductive Coupling
Main Components of RFID Tag
Flip-chip (Chip-to-Tag)
Commissioning The Tag