Which is the most common input and output impedance of MMICs?
The correct answer is A: 50 ohms. Which is the most common input and output impedance of MMICs is 50 ohms. MMICs are typically designed for 50-ohm impedance. For amateur radio operators, this is important for RF circuit design. Understanding this helps when using MMICs.
Exam Tip
MMIC input/output impedance = 50 ohms. Think 'M'MIC = 'M'ostly '5'0 ohms. MMICs are typically designed for 50-ohm impedance. Not 300Ω, not 450Ω, not 75Ω (video) - just 50 ohms.
Memory Aid
"MMIC input/output impedance = 50 ohms. Think 'M'MIC = '5'0 ohms. MMICs are typically designed for 50-ohm impedance. Important for RF circuit design."
Real-World Application
MMICs: The most common input and output impedance is 50 ohms. This matches standard RF systems and makes MMICs easy to integrate. This is the impedance - 50 ohms for MMICs.
Key Concepts
Why Other Options Are Wrong
Option B (300 ohms): Incorrect. 300 ohms isn't common - 50 ohms is the standard. 300 ohms isn't the impedance.
Option C (450 ohms): Incorrect. 450 ohms isn't common - 50 ohms is the standard. 450 ohms isn't the impedance.
Option D (75 ohms): Incorrect. 75 ohms is for video, not MMICs - 50 ohms is standard for MMICs. 75 ohms isn't the impedance.
题目解析
The correct answer is A: 50 ohms. Which is the most common input and output impedance of MMICs is 50 ohms. MMICs are typically designed for 50-ohm impedance. For amateur radio operators, this is important for RF circuit design. Understanding this helps when using MMICs.
考试技巧
MMIC input/output impedance = 50 ohms. Think 'M'MIC = 'M'ostly '5'0 ohms. MMICs are typically designed for 50-ohm impedance. Not 300Ω, not 450Ω, not 75Ω (video) - just 50 ohms.
记忆口诀
MMIC input/output impedance = 50 ohms. Think 'M'MIC = '5'0 ohms. MMICs are typically designed for 50-ohm impedance. Important for RF circuit design.
实际应用示例
MMICs: The most common input and output impedance is 50 ohms. This matches standard RF systems and makes MMICs easy to integrate. This is the impedance - 50 ohms for MMICs.
错误选项分析
Option B (300 ohms): Incorrect. 300 ohms isn't common - 50 ohms is the standard. 300 ohms isn't the impedance. Option C (450 ohms): Incorrect. 450 ohms isn't common - 50 ohms is the standard. 450 ohms isn't the impedance. Option D (75 ohms): Incorrect. 75 ohms is for video, not MMICs - 50 ohms is standard for MMICs. 75 ohms isn't the impedance.
知识点
Input and output impedance, MMICs, 50 ohms
Verified Content
Question from official FCC Extra Class question pool. Explanation reviewed by licensed amateur radio operators.