Answer:
a) a1 : This is the incident voltage at port 1
b) b1 : This is the deflected voltage at port 1 ;
b1 = [tex]S_{21} a_{1} + S_{22} a_{2}[/tex]
c) S11 ; This is the input port voltage reflection coefficient when the input voltage is at port 1
S11 = [tex]\frac{V1^-}{V1^+} |v2^+=0[/tex]
d) S12 : this is the gross voltage gain
S12 = [tex]\frac{V1^-}{V2^+}| v1 ^+[/tex]
e) S21 : This is the forward voltage gain
S21 = [tex]\frac{V2^-}{V1^+} | v2^+[/tex]
f) S22 : output port voltage reflection coefficient
S22 = [tex]\frac{v2^-}{v2^+} | v1^+ = 0[/tex][tex]\frac{v2^-}{v2^+} | v1^+ = 0[/tex]
Explanation:
a) a1 : This is the incident voltage at port 1
b) b1 : This is the deflected voltage at port 1 ;
b1 = [tex]S_{21} a_{1} + S_{22} a_{2}[/tex]
c) S11 ; This is the input port voltage reflection coefficient when the input voltage is at port 1
S11 = [tex]\frac{V1^-}{V1^+} |v2^+=0[/tex]
d) S12 : this is the gross voltage gain
S12 = [tex]\frac{V1^-}{V2^+}| v1 ^+[/tex]
e) S21 : This is the forward voltage gain
S21 = [tex]\frac{V2^-}{V1^+} | v2^+[/tex]
f) S22 : output port voltage reflection coefficient
S22 = [tex]\frac{v2^-}{v2^+} | v1^+ = 0[/tex][tex]\frac{v2^-}{v2^+} | v1^+ = 0[/tex]
