*Question G9D06:
Which of the following is an advantage of a log-periodic antenna?*  

*Correct Answer is  A: Wide bandwidth*  

### AI Response: (may contain errors)  

A log-periodic antenna is designed to operate over a wide range of frequencies, which is why the correct answer is:

**A: Wide bandwidth**

### Explanation:

1. **Why the correct answer is correct:**
   - **Wide Bandwidth:** The log-periodic antenna is known for its ability to maintain consistent performance over a broad frequency range. This is due to its unique design, where the elements are arranged in a logarithmic pattern, allowing it to cover multiple bands without needing adjustments.

2. **Why the other choices are incorrect:**
   - **B: Higher gain per element than a Yagi antenna:** A Yagi antenna typically has higher gain per element compared to a log-periodic antenna. The log-periodic sacrifices some gain to achieve its wide bandwidth.
   - **C: Harmonic suppression:** Log-periodic antennas are not specifically designed for harmonic suppression. They are primarily used for their wide frequency coverage.
   - **D: Polarization diversity:** Log-periodic antennas do not inherently provide polarization diversity. They are usually linearly polarized, and any polarization diversity would require additional design considerations.

### Useful Concepts:

- **Log-Periodic Design:** The elements of a log-periodic antenna are spaced and sized in a logarithmic fashion, which allows the antenna to operate efficiently over a wide range of frequencies.
- **Trade-off:** The trade-off for the wide bandwidth of a log-periodic antenna is typically lower gain compared to more narrowband antennas like the Yagi.