Electronics and Communication Engineering - Microwave Communication - Discussion
Discussion Forum : Microwave Communication - Section 4 (Q.No. 11)
11.
The two terms used to describe performance of a directional coupler are
Discussion:
1 comments Page 1 of 1.
Pankaj Wagh said:
5 years ago
Coupling Factor C.
The Coupling factor of a directional coupler is the ratio of incident power to the forward power, measured in dB.
C=10log10Pi/Pf dB.
Directivity D
The Directivity of a directional coupler is the ratio of forwarding power to the back power, measured in dB.
D=10log10Pf/Pb dB.
Isolation
It defines the directive properties of a directional coupler. It is the ratio of incident power to the back power, measured in dB.
I=10log10Pi/Pb dB.
Isolation in dB = Coupling factor + Directivity.
The Coupling factor of a directional coupler is the ratio of incident power to the forward power, measured in dB.
C=10log10Pi/Pf dB.
Directivity D
The Directivity of a directional coupler is the ratio of forwarding power to the back power, measured in dB.
D=10log10Pf/Pb dB.
Isolation
It defines the directive properties of a directional coupler. It is the ratio of incident power to the back power, measured in dB.
I=10log10Pi/Pb dB.
Isolation in dB = Coupling factor + Directivity.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers