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| Q. |
If SWR=1.5 with a wavelength of 4 cm and the distance between load and first minima is 1.48cm, then the reflection coefficient is: |
| A. | 0.0126+j0.1996 |
| B. | 0.0128 |
| C. | 0.26+j0.16 |
| D. | none of the mentioned |
| Answer» A. 0.0126+j0.1996 | |
| Explanation: ┌= (swr-1)/ (swr+1). substituting for swr in the above equation for reflection co-efficient, magnitude of the reflection co-efficient is 0.2. to find θ, θ=π+2βlmin, substituting lmin as 1.48cm, θ=86.4⁰. hence converting the polar form of the reflection co-efficient into rectangular co- ordinates, reflection co-efficient is 0.0126+j0.1996. | |
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