Test your basic knowledge |

RFID Technology

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 Europe






2. Time for an associated tag to be read






3. Neighboring readers interrogate a tag simultaneously (can be easily solved because they can detect this and communicate to each other)






4. Standards = EPC global & ISO 18000 - Different Organizations






5. IC Chip - Antenna/Inductor - Power Source






6. The time during which a reader can emit RF energy to read tags






7. 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






8. Every time a tag is read - it is saved to this






9. Brains of the RFID tag






10. A mechanical device for controlling or moving objects - A programmable logic controller (PLC) - robot arm - mechanical arm - etc.






11. 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






12. Class= Functionality - - Class 0 -1 -2 -3 -4 & 5






13. Pattern(Footprint) - Power/Attenuation - and Polarization






14. Also called an 'interrogator' - A device that can read from and write data to compatible RFID tags - Also doubles up as a writer






15. Die used to "stamp" out the shape of antenna. Take up roller rolls the unused material into waste roll.






16. The 3D energy field generated by the antenna (also called reading area)






17. Die-cut web adhesive - paper face






18. In this this antenna type - the RF waves emanate in a linear pattern from the antenna. Waves have only one energy field






19. Open image in meshed screens. Conductive ink "squeezed" thru open mesh.






20. When two waves (out of phase) impose on each other and the original signal is cancelled. Nulls are created s a result






21. An electronic signal or indicator - Audible alarms - strobes - light stacks - etc.






22. The orientation of the transmitted electromagnetic field or the direction of oscillation of electromagnetically emitted waves






23. These are categorized into Aloha based protocols and tree based






24. More than one tag tries to respond to a reader at the same time.






25. The act of writing the tag data by reader






26. 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






27. 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






28. controls the internal functions under the command of the processor






29. Tags collide completely or not at all (Theoretically proven maximum utilization= 36.8%)






30. Dead zones that surround protrusions in antenna footprint






31. 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






32. 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






33. Used for storing data such as the reader configuration parameters and a list of tag reads






34. '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






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...






36. Proximity systems (low range -mm) medium range (cm) and long range (m)






37. Mount the tiny chip to a strap - Greater handling ability - Possibility to use very small chips - Possibility of higher volume production - Fluidic Self Assembly






38. When two waves (in phase) impose on each other and enhance the original signal and give rise to protrusions






39. 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






40. 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






41. 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






42. Generation= Timeline of Introduction - Gen 1 & 2 - Gen 2 protocol backward compatible






43. 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






44. Image "burned" into photopolymer layer. All copper removed except where image was burned. Copper antenna goes through additional processes to protect from oxidation






45. 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%)






46. Reader transmits a continuous-wave RF signal into the reading environment






47. Inductive coupling and passive backscatter (capacitive coupling)






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






49. 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






50. UHF and microwave passive tags