Appendix B Final Exam
Questions
1. Which formula will you use to calculate the wavelength of an RF wave whose frequency is f and that is traveling through free space?
A. λ = f/c
B. λ = fc
C. λ = c/2f
D. λ = c/f
2. RFID systems typically use the transmission line with the following impedance:
A. 10 Ω
B. 50 Ω
C. 100 Ω
D. 70 Ω
3. Which characteristic of an RF wave affects the performance of an RFID system in the vicinity of metal cans?
A. Reflection
B. Refraction
C. Diffraction
D. Absorption
4. For signal strength Vs and noise strength Vn, the signal to noise ratio, SNR, can be calculated in decibels by using the following formula:
A. SNR= 20 log (Vs/Vn)
B. SNR= 10 log (Vs/Vn)
C. SNR = Vs/Vn
D. log (Vs/Vn)
5. Which of the following is not ...
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