Q.1
Which of the following is not a part of traditional RF subsystems?
  • a) Filter
  • b) Low noise amplifier
  • c) Multiplexer
  • d) Frequency translation
Q.2
Limited dynamic range in digital RF system can be improved by _____
  • a) digital filter
  • b) digital amplifier
  • c) digital equalizer
  • d) digital suppressor
Q.3
____ and ____ are the parameters that define software defined radio applications.
  • a) Linearity, SNR
  • b) Dynamic range, SNR
  • c) Linearity, Dynamic range
  • d) Bandwidth, SNR
Q.4
Which of the following influences the spurious free dynamic range?
  • a) Second-order intercept
  • b) Second-order intermodulation product
  • c) Third-order intercept
  • d) Third-order intermodulation product
Q.5
The point of intersection of the fundamental signal with the power of third-order intermodulation product is called as _____
  • a) input-referenced third-order intercept point
  • b) output-referenced third-order intercept point
  • c) input-referenced third-order intermodulation point
  • d) output-reference third-order intermodulation point
Q.6
Signal to noise ratio is the preferred metric when ____
  • a) desired signal bandwidth is less than Nyquist bandwidth
  • b) desired signal bandwidth is approximately equal to Nyquist bandwidth
  • c) desired signal bandwidth is greater than Nyquist bandwidth
  • d) bandpass sampling is used
Q.7
Which of the following is the preferred metric when the desired signal bandwidth is less than Nyquist bandwidth?
  • a) Noise Power Ratio
  • b) Spurious Free Dynamic Range (SFDR)
  • c) Full Power Analog Input Bandwidth
  • d) Half Power Analog Input Bandwidth
Q.8
The ratio of ______ the notch filter to the ____ the notch filter gives the Noise Power Ratio.
  • a) maximum spectral density inside, spectral density outside
  • b) spectral density inside , maximum spectral density outside
  • c) spectral density outside, maximum spectral density inside
  • d) maximum spectral density outside, spectral density inside
Q.9
If Wais the receiver bandwidth and NF is the noise figure, the noise power of a noise limited receiver is given by the expression ____
  • a) Pm=-184dBm+10log(Wa)+NF
  • b) Pm=-174dBm+10log(Wa)+NF
  • c) Pm=-174dBm+10log(NF)+Wa
  • d) Pm=-184dBm+10log(NF)+Wa
Q.10
Which of the following applications takes only SFDR as its performance metric?
  • a) Spread spectrum access
  • b) Wideband digital receiver
  • c) Cellular Phone
  • d) Spectrum analysis
Q.11
Which of the following metrics is considered for spread spectrum method?
  • a) SNR
  • b) SNR, SFDR
  • c) SNR, SFDR, NPR
  • d) SNR, NPR
Q.12
Which of the following conditions does not affect SNR?
  • a) Small signals in an environment of strong interference
  • b) Wide band channelized receiver
  • c) High fidelity instrumentation
  • d) High dynamic range
Q.13
The sampling rate of promising SDR technology ranges between _____
  • a) 1 MHz – 100 MHz
  • b) 10 MHz – 100 MHz
  • c) 1 MHz – 1 GHz
  • d) 1 MHz – 10 GHz
Q.14
The NPR for an SDR can be determined by matching the radio noise floor to the ADC input noise level.
  • a) True
  • b) False
Q.15
The point at which the output noise power of the fundamental signal shifts away from the ideal output power by 1-dB is called 1-dB expansion point.
  • a) True
  • b) False
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