*Question G6B11:
What is an SMA connector?*  

*Correct Answer is  B: A small threaded connector suitable for signals up to several GHz*  

### AI Response: (may contain errors)  

An SMA connector is a type of RF connector used for coaxial cables. Here's why the correct answer is correct and the others are not:

1. **Correct Answer: B - A small threaded connector suitable for signals up to several GHz**
   - **Explanation**: SMA stands for SubMiniature version A. It is a small, threaded connector that is widely used for RF applications. Its design allows it to handle frequencies up to several gigahertz, typically up to 18 GHz. The threaded design ensures a secure connection, which is crucial for maintaining signal integrity at high frequencies.

2. **Incorrect Choices**:
   - **A: A type-S to type-M adaptor**
     - **Explanation**: This choice is incorrect because SMA does not refer to an adaptor between two different connector types. Instead, it is a specific type of connector.
   - **C: A connector designed for serial multiple access signals**
     - **Explanation**: This choice is incorrect because SMA connectors are not specifically designed for serial multiple access signals. The term "serial multiple access" is not related to the physical characteristics or applications of SMA connectors.
   - **D: A type of push-on connector intended for high-voltage applications**
     - **Explanation**: This choice is incorrect because SMA connectors are not push-on connectors; they are threaded. Additionally, they are not designed for high-voltage applications but rather for RF signal transmission.

In summary, the SMA connector is characterized by its small size, threaded design, and suitability for high-frequency applications, making it the correct choice for signals up to several GHz.