Which of the following can be measured with a vector network analyzer?
The correct answer is D: All these choices are correct. Which of the following can be measured with a vector network analyzer includes: input impedance, output impedance, and reflection coefficient. All three can be measured with VNAs. For amateur radio operators, this is important for test equipment. Understanding this helps when using network analyzers.
Exam Tip
All three can be measured with VNA: input impedance, output impedance, reflection coefficient. When all listed parameters can be measured with VNAs, 'all of the above' is usually the answer. All are valid VNA measurements.
Memory Aid
"All three can be measured with VNA: Input impedance, Output impedance, Reflection coefficient. Think 'A'll 'V'NA measurements. All three are valid VNA measurements. Important for test equipment."
Real-World Application
A vector network analyzer: It can measure input impedance (S11), output impedance (S22), and reflection coefficient (S11, S22). VNAs measure S parameters which provide all this information. This is what can be measured - all these parameters with VNA.
Key Concepts
Why Other Options Are Wrong
Option A: While correct, this is incomplete. Output impedance and reflection coefficient can also be measured.
Option B: While correct, this is incomplete. Input impedance and reflection coefficient can also be measured.
Option C: While correct, this is incomplete. Input impedance and output impedance can also be measured.
题目解析
The correct answer is D: All these choices are correct. Which of the following can be measured with a vector network analyzer includes: input impedance, output impedance, and reflection coefficient. All three can be measured with VNAs. For amateur radio operators, this is important for test equipment. Understanding this helps when using network analyzers.
考试技巧
All three can be measured with VNA: input impedance, output impedance, reflection coefficient. When all listed parameters can be measured with VNAs, 'all of the above' is usually the answer. All are valid VNA measurements.
记忆口诀
All three can be measured with VNA: Input impedance, Output impedance, Reflection coefficient. Think 'A'll 'V'NA measurements. All three are valid VNA measurements. Important for test equipment.
实际应用示例
A vector network analyzer: It can measure input impedance (S11), output impedance (S22), and reflection coefficient (S11, S22). VNAs measure S parameters which provide all this information. This is what can be measured - all these parameters with VNA.
错误选项分析
Option A: While correct, this is incomplete. Output impedance and reflection coefficient can also be measured. Option B: While correct, this is incomplete. Input impedance and reflection coefficient can also be measured. Option C: While correct, this is incomplete. Input impedance and output impedance can also be measured.
知识点
Vector network analyzer, Input impedance, Output impedance, Reflection coefficient
Verified Content
Question from official FCC Extra Class question pool. Explanation reviewed by licensed amateur radio operators.