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Q#1
Transmission Lines
GATE EC 2023
NAT
+2 marks
-0 marks
A transparent dielectric coating is applied to glass 
to eliminate the reflection of red light 
. The minimum thickness of the dielectric coating, in 
, that can be used is ________. (rounded off to two decimal places).
Explanation:
For no reflection, impedance must be matched. Hence, 
acts like a quarter wave impedance transformer.
So,
(i) 
(ii) For impedance matching,
Here, 
Hence, for minimum distance, 
So, 
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