DC0710J5005AHF Datasheet, PDF (4/6 Pages) Anaren Microwave – Ultra Low Profile 0805

Model DC0710J5005AHF
Rev B
Definition of Measured Specifications
Parameter
Return Loss
Directivity
Insertion Loss
Mean Coupling
Phase Balance
Frequency
sensitivity
Definition
The impedance match of the
coupler to a 50 system. Return
Loss is an alternate means to
express VSWR.
The power at the isolated port
divided by the power at the
coupled port
The input power divided by the
sum of the power at the two output
ports.
At a given frequency ( _n ),
coupling is the input power divided
by the power at the coupled port.
Mean coupling is the average
value of the coupling
values in the band. N is the
number of frequencies
in the band.
The difference in phase angle
between the two output ports.
The decibel difference between
the maximum in band coupling
value and the minimum in band
coupling value.
Mathematical Representation
i, j, k, m is denoted as the port index of input, isolated, direct
and coupled port for specific pin configuration shown in the
table above
20 log₁₀ ( S_ii )
20 log₁₀
S _ji
S _mi
2
2
10 log₁₀ ( S_mi  S_ki )
Coupling (dB) = 20 log₁₀ S_mi
N
 ^{20 log}10 ^Smi
Mean Coupling (dB) = ^m1
N
S_ki  S_mi  90^o
(Max Coupling (dB) – Min Coupling)/2
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