Which of the following can be measured by a two-port vector network analyzer?
The correct answer is B: Filter frequency response. Which of the following can be measured by a two-port vector network analyzer is filter frequency response. VNAs can measure frequency response of two-port devices like filters. For amateur radio operators, this is important for test equipment. Understanding this helps when using network analyzers.
Exam Tip
Two-port VNA can measure = filter frequency response. Think 'V'ector 'N'etwork 'A'nalyzer = 'F'requency 'R'esponse. VNAs can measure frequency response of two-port devices like filters. Not phase noise, not pulse rise time, not forward power - just frequency response.
Memory Aid
"Two-port VNA can measure = filter frequency response. Think 'V'ector 'N'etwork 'A'nalyzer = 'F'requency 'R'esponse. VNAs can measure frequency response of two-port devices like filters. Important for test equipment."
Real-World Application
A two-port vector network analyzer: It can measure filter frequency response. The VNA sends signals through the filter and measures the response, showing how the filter responds at different frequencies. This is what can be measured - filter frequency response.
Key Concepts
Why Other Options Are Wrong
Option A (Phase noise): Incorrect. Phase noise isn't typically measured with VNA - VNAs measure frequency response. Phase noise isn't measured.
Option C (Pulse rise time): Incorrect. Pulse rise time isn't measured with VNA - VNAs measure frequency response. Pulse rise time isn't measured.
Option D (Forward power): Incorrect. Forward power isn't measured with VNA - VNAs measure S parameters and frequency response. Forward power isn't measured.
题目解析
The correct answer is B: Filter frequency response. Which of the following can be measured by a two-port vector network analyzer is filter frequency response. VNAs can measure frequency response of two-port devices like filters. For amateur radio operators, this is important for test equipment. Understanding this helps when using network analyzers.
考试技巧
Two-port VNA can measure = filter frequency response. Think 'V'ector 'N'etwork 'A'nalyzer = 'F'requency 'R'esponse. VNAs can measure frequency response of two-port devices like filters. Not phase noise, not pulse rise time, not forward power - just frequency response.
记忆口诀
Two-port VNA can measure = filter frequency response. Think 'V'ector 'N'etwork 'A'nalyzer = 'F'requency 'R'esponse. VNAs can measure frequency response of two-port devices like filters. Important for test equipment.
实际应用示例
A two-port vector network analyzer: It can measure filter frequency response. The VNA sends signals through the filter and measures the response, showing how the filter responds at different frequencies. This is what can be measured - filter frequency response.
错误选项分析
Option A (Phase noise): Incorrect. Phase noise isn't typically measured with VNA - VNAs measure frequency response. Phase noise isn't measured. Option C (Pulse rise time): Incorrect. Pulse rise time isn't measured with VNA - VNAs measure frequency response. Pulse rise time isn't measured. Option D (Forward power): Incorrect. Forward power isn't measured with VNA - VNAs measure S parameters and frequency response. Forward power isn't measured.
知识点
Two-port vector network analyzer, Filter frequency response, VNA measurements, Frequency response
Verified Content
Question from official FCC Extra Class question pool. Explanation reviewed by licensed amateur radio operators.