Appendix B: Chapter Quiz Questions

Use these short quizzes to confirm your grasp of each chapter before moving on. Answers are in Appendix C.

Quiz 1. Power Measurement Basics

1.1 Too much RF power radiated from an antenna or waveguide could burn a user's body. - A. True - B. False

1.2 Maximum transmitted power of devices is a concern for: - A. Regulatory Agencies - B. Component and Device Manufacturers - C. RF Engineers - D. All of the above

1.3 Measuring the output power of RF circuits has been meaningful to the technical industry for over 100 years. - A. True - B. False

Quiz 2. Key Power Measurement Technologies

2.1 Thermal sensors that measure RF energy produce a temperature rise in a terminating load. - A. True - B. False

2.2 A modulation with a peak amplitude exceeding the upper boundary of the square-law region creates challenges for a diode sensor. - A. True - B. False

2.3 Wireless devices are often expected to monitor and control transmitted power to: - A. Avoid generating a signal that dominates a composite signal seen by a base station - B. Ensure data rates stay below an established threshold - C. Increase the baud rate of wireless data transfer - D. None of the above

Quiz 3. CW, Average, and Peak Power

3.1 The three classical categories of RF power measurement are: - A. CW, Average, Differential - B. Average, Peak Power, Grounded - C. Average, Peak Power, CW - D. Sub-Zero, Grounded, CW

3.2 Measuring RF power includes measuring the peak power of a modulated signal, the instantaneous power at any moment in time, and the average power over a defined interval. - A. True - B. False

3.3 A detector's response to risetime and to bandwidth improve or degrade together. - A. True - B. False

Quiz 4. Making Power Measurements

4.1 When making power measurements, all of the following are important variables except: - A. Frequency Range - B. Dynamic Range - C. Time-of-Flight Statistics - D. Connection Type

4.2 Below 18 GHz, most power sensors use a coaxial Type-N or SMA connector. - A. True - B. False

4.3 Radar antenna loss is conveniently measured by two synchronized peak power sensors. - A. True - B. False

Quiz 5. Calibration Issues

5.1 Calibrating a power meter and power sensor separately is a reasonable way to increase the versatility of your instrument pool. - A. True - B. False

5.2 Which is a calibration technique used for power sensors? - A. Single-Point Adjustment - B. Multi-Point Adjustment - C. Two-Point Adjustment - D. All of the above

5.3 Calibration will require gain and offset adjustments. - A. True - B. False

Quiz 6. RF Power Analysis

6.1 Statistical power analysis is a new method of analyzing power. - A. True - B. False

6.2 A CCDF plot shows the probability that instantaneous power exceeds a given level above average. - A. True - B. False

6.3 Triggered pulse analysis requires a trigger source of some kind. - A. True - B. False

Quiz 7. Power Measurement Applications

7.1 A radar pulse with a 0.1% duty cycle will have a peak-to-average ratio of approximately: - A. 3 dB - B. 10 dB - C. 30 dB - D. 300 dB

7.2 For EMC compliance testing, a power sensor can be used to verify the output of the test signal source. - A. True - B. False

Quiz 8. Performance Tips

8.1 Averaging 100 readings reduces the noise floor by approximately: - A. 3 dB - B. 10 dB - C. 100 dB - D. None of the above

8.2 Hardware triggering is generally faster than software triggering. - A. True - B. False

Quiz 9. Measurement Accuracy

9.1 Measurement uncertainty is usually dominated by: - A. The sensor's cosmetic color - B. The brand name on the meter - C. Mismatch between sensor and source, plus linearity and frequency response - D. The length of the USB cable

9.2 NIST traceability is only relevant for military applications. - A. True - B. False