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. Receives signal from reader and radiates a response back to the reader - LF or HF: induction coil - UHF or Microwave Frequency: printed antennas






2. 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.






3. Interprets the signal received from reader and controls memory storage and retrieval






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






5. 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...






6. Inductive coupling and passive backscatter (capacitive coupling)






7. Serves as writable or non-writable data storage






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






9. 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)






10. 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






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






12. Smart cards - smart label - etc.






13. Measurement of power for radiation of antenna used in Europe






14. 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






15. 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






16. Used to transmit AC power and the clock cycle via its antennas to the tags in its read zone






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






18. '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






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






20. Receives analog signals from the tag via the reader antenna






21. To disassociate the tag from a tagged object and optionally destroy it






22. Brains of the RFID tag






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






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






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






26. 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






27. IC Chip - Antenna/Inductor - Power Source






28. Low Frequency(LF) - High Frequency(HF) - Ultra high frequency (UHF) and Microwave frequency






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






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






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






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






33. changes signal received from reader to include data that will be transmitted back to the reader






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






35. 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%)






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






37. Continuous web - no adhesive






38. 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






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






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






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






42. UHF and microwave passive tags






43. The reflection of reader antenna signals on RF-opaque causes this






44. 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






45. Measurement of power for radiation of antenna used in US






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






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






48. 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






49. 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






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