Agilent 346A回收346B噪声源346C

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Agilent 346系列噪声源是与Agilent噪声系数测试仪和系统联用的理想噪声信号源

。
因为它们都具有宽频带(10MHz至18GHz或26.5GHz)特性,故不再需要若干个不同
频带的信号源。每个噪声源各自具有特定频率下的校准ENR值,为便于对8970B加
载,校准值打印在它的商标上。每个噪声源的低驻波比(SWR)使测量中的主要不确
定性因素-测试信号的反身地以减小。此外,备有的各种连接器也减少了对可能导致
精度降低的接头适配器的需求。

Agilent346系列噪声是为广泛的测量应用而设计的。346C的频率覆盖范围宽,为

10MHz
到26.5GHz,346B具有高的ENR,低的SWR和各种型式的接头,使之成为一种通用的

噪声
源。346A是专为*表征输入阻*灵敏器件(如GaAs FET和许多UHF放大器)而

设计的。
该仪器从接通至切断期间反射系数的变化****小器)而设计的。该仪器从接通至切断

期间反射
系数的变化级小(<.01),因而在测量噪声系数和增益的随输入阻*变化的关系时可

使误差小。

Agilent 346 Series noise sources are ideal noise sources for use with 

Agilent noise 
figure testers and systems.Because they all h*e a wide frequency band 

(10MHz to 
18GHz or 26.5GHz) characteristics, so no longer need a number of 

differentBand source. 
Each noise source has a calibrated ENR value at a particular frequency, 

respectively, 
for ease of additio*the 8970BThe calibration value is printed on its 

mark. The low 
standing w*e ratio (SWR) of each noise source makes the main 

uncertainty in the mea
surement Qualitative factors - the test signal to reduce the reflexive. In 

addition, the various 
connectors *ailable are also reduced to what may be causedReduced 

precision connector 
adapter needs.

Agilent346 Series noise is designed for a wide range of measurement 

applicati*. 346C 
frequency coverage is wide, 10MHzAt 26.5GHz, the 346B has a high ENR, 

low SWR and vari
ous types of connector*aking it a universal noise source. The 346A is 

designed to accura
tely characterize input impedance sensitive devices such as GaAs FETs 

and many UHF amp
lifiers.The instrument from the switch to cut off during the reflection 

coefficie*f minimalist) 
design. The instrument from the switch to cut off the anti-The variation of 

the firing rate is *all 
(<.01), so errors can be minimized when measuring the relati*hip 

between the noise figure 
and the gain as a function of input impedance.