ACtE08 · Chapter 8Demo2 · Set 2🏛️ Past Licensure QuestionID: f837f307
In RF transmission lines, calculate the Voltage Standing Wave Ratio (VSWR / SWR) if the magnitude of the voltage reflection coefficient () is 0.8:
In RF transmission lines, calculate the Voltage Standing Wave Ratio (VSWR / SWR) if the magnitude of the voltage reflection coefficient () is 0.8:
Multiple Choice Options
- A
5
- B✓ Correct Option
9
- C
1.8
- D
0.2
Detailed Technical Solution & Explanation
The Voltage Standing Wave Ratio (SWR) is calculated directly from the magnitude of the reflection coefficient using the standard formula:
Given :
Thus, the SWR is exactly 9 (or ).
Option Analysis:
•
Option A (5): Incorrect; corresponds to (since ).
•
Option B (9): Correct; .
•
Option C (1.8): Incorrect; merely the numerator ().
•
Option D (0.2): Incorrect; merely the denominator ().
Reference: Demo2 · Set 2NEC Licensure Syllabus