Term
(T/F)
Radio frequencies from 1KHz to 10GHz have been used in RFID applications. |
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Definition
False
100KHz to 1GHz
Or
0.0000001 to 1GHz |
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Term
| Name architectures for tags. |
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Definition
1. CMOS circuitry
2. Surface acoustic wave (SAW) or tuned resonators |
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Term
| RFID tags are powered how (2)? |
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Definition
1. Battery
2. Rectification of the radio signal sent by the reader |
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Term
| Data is transferred from a tag to the interrogator how (2)? |
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Definition
1. By changing the loading of the tag antenna in a coded manner
2. By generating, modulating, and transmitting a radio signal |
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Term
| A typical RFID system can use the principle of (1) ________ _________. In this type of RFID system, to transfer data from the tag to the reader, the reader sends an (2)________ signal to the tag. The tag reads its internal memory of stored data and changes the loading on the tag antenna in a coded manner corresponding to the stored data. The signal reflected from the tag is thus modulated with this coded information. This modulated signal is received by the reader, (3)_________ using a homodyne receiver, and decoded and output as digital information that contains the data stored in the tag. |
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Definition
1. Modulated backscatter
2. Unmodulated
3. Demodulated |
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Term
| A simple ______ ______ allows the detection circuitry in RFID tags to be simple and consume little power. |
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Definition
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Term
| What scientist was the first to demonstrate continuous wave (CW) generation and transmission of radio signals in 1906, marking the beginning of modern radio communications? |
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Definition
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Term
| The early 20th century, particularly during WWII, was considered the birth of _____. |
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Definition
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Term
| ______ works to detect the location of an object by reflecting radio waves. |
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Definition
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Term
Communication by Means of Reflected Power
“Evidently, considerable research and development work has to be done before the remaining basic problems in reflected-power communication are solved, and before the field of useful applications is explored.” |
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Definition
| Landmark paper by Harry Stockman in 1948 |
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Term
Theory of Loaded Scatterers
Electromagnetic theory related to RFID was written by this scientist in 1964. |
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Definition
| R.F. Harrington’s paper that preluded the explosion of RFID technologies in the 1970’s |
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Term
| Two RFID companies founded in the 1960’s developing electronic article surveillance (EAS) |
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Definition
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Term
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Definition
| Electronic Article Surveillance |
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Term
| Early EAS systems used this strategy for detection (2). |
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Definition
1. Microwave (generation of harmonics using a semiconductor)
2. Inductive technology (resonant circuits) |
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Term
| First and most widespread use of RFID. |
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Definition
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Term
| This development signaled the beginning of practical, completely passive tags with an operational range of tens of meters. |
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Definition
| Los Alamos work that was presented by Alfred Koelle, Steven Depp, and Robert Freyman, “Short-Range Radio-Telemetry for Electronic Identification Using Modulated Backscatter,” in 1975. |
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Term
| This was a successful transportation program of the 1990s that everyone is familiar with and is due to RFID technology. |
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Definition
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Term
| What is the memory of choice for RFID tags? |
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Definition
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Term
| The size of RFID tags is currently limited by what physical characteristic? |
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Definition
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