Correct Answer: Tag
Explanation:
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When two waves (out of phase) impose on each other and the original signal is cancelled. Nulls are created s a result
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
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)
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
Reader that can operate in different frequencies or can use different tag-to-reader communication protocols (generally stationary)
Die-cut web adhesive - paper face
An electronic signal or indicator - Audible alarms - strobes - light stacks - etc.
Image "burned" into photopolymer layer. All copper removed except where image was burned. Copper antenna goes through additional processes to protect from oxidation
The orientation of the transmitted electromagnetic field or the direction of oscillation of electromagnetically emitted waves