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XC0900A-20 参数 Datasheet PDF下载

XC0900A-20图片预览
型号: XC0900A-20
PDF下载: 下载PDF文件 查看货源
内容描述: 20分贝定向耦合器 [20 dB Directional Coupler]
分类和应用:
文件页数/大小: 23 页 / 576 K
品牌: ANAREN [ ANAREN MICROWAVE ]
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Model XC0900A-20  
Rev F  
Definition of Measured Specifications  
Parameter  
Definition  
Mathematical Representation  
V
max  
The impedance match of  
the coupler to a 50Ω  
system. A VSWR of 1:1 is  
optimal.  
VSWR =  
V
min  
VSWR  
Vmax = voltage maxima of a standing wave  
Vmin = voltage minima of a standing wave  
(Voltage Standing Wave Ratio)  
The impedance match of  
the coupler to a 50Ω  
system. Return Loss is  
an alternate means to  
express VSWR.  
VSWR +1  
VSWR -1  
Return Loss  
Return Loss (dB)= 20log  
At a given frequency (ωn),  
coupling is the input  
P (ωn )  
in  
Coupling (dB) =  
C(ωn ) =10log  
P (ωn )  
cpl  
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.  
Mean Coupling  
N
C(ω )  
n
n=1  
Mean Coupling (dB) =  
N
The input power divided  
by the sum of the power  
at the two output ports.  
The input power divided  
by the power at the direct  
port.  
P
in  
10log  
Insertion Loss  
P
cpl +  
P
direct  
P
in  
Transmission Loss  
10log  
10log  
P
direct  
The power at the  
P
cpl  
iso  
coupled port divided by  
the power at the isolated  
port.  
Directivity  
P
The decibel difference  
between the maximum in  
band coupling value and  
the mean coupling, and  
the decibel difference  
between the minimum in  
band coupling value and  
the mean coupling.  
Max Coupling (dB) – Mean Coupling (dB)  
and  
Min Coupling (dB) – Mean Coupling (dB)  
Frequency Sensitivity  
USA/Canada:  
Toll Free:  
(315) 432-8909  
(800) 411-6596  
+44 2392-232392  
Available on Tape  
and Reel for Pick and  
Place Manufacturing.  
Europe: