Topic: Electromagnetics
The array factor of an array antenna depends on
- A. number of radiating elements
- B. spacing between the elements
- C. phase of the applied signal
- D. all of the above
Answer: C. phase of the applied signal
Explanation: Note: According to the official answer key, the answer is option (c). However, the detailed explanation in the source document states: "Thus, the array factor depends on the number of radiating elements, the elements spacing, amplitude and phase of the applied signal to each other", which fundamentally points to "all of the above". The JSON extraction captures the option strictly as presented in the key.