Datasheet > BA4140

BA4140

更新时间： 2024-01-05 09:01:55

品牌	Logo	应用领域
TEMEX		射频微波
页数	文件大小	规格书
58页	1041K
描述
4 Port Circulator, 138MHz Min, 155MHz Max

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技术参数
数据手册

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BA4140 技术参数

生命周期：	Obsolete	Reach Compliance Code：	unknown
风险等级：	5.58	其他特性：	N-F
构造：	COAXIAL	最大输入功率 (CW)：	53.98 dBm
最大插入损耗：	0.8 dB	最大工作频率：	155 MHz
最小工作频率：	138 MHz	最高工作温度：	70 °C
最低工作温度：		射频/微波设备类型：	4 PORT CIRCULATOR
最大电压驻波比：	1.25	Base Number Matches：	1

BA4140 数据手册

FERRITE DEVICES

Technical information / Electrical features

Load VSWR

Power rating of a ferrite device depends on the mismatch at the output port (load VSWR); for instance,

for an isolator, if load VSWR is 2: 1, more than 10% of the input power is reﬂected inside the ferrite

device to the internal load.

In case of short-circuit (inﬁnite load VSWR), the ferrite device has to handle the equivalent of twice

the input CW-power, and the equivalent of a peak power equal to 4 times the input power, based on

the higher internal voltage levels.

Therefore, the time-duration of short circuit or high load VSWR is needed in order to determine an

adequate safety margin.

Third order interm odulation products (IMP

)

Harmonics and third order intermodulation products appear when non-linear elements are used such

as ferrite materials, metal welds, surface ﬁnish, etc.

When two tones - F and F - are applied to a ferrite device, the relative amplitudes of 2F - F and

2F -F are critical in some communication systems and should be speciﬁed when ordering (see Fig. 8).

POWER

IMP₃₂

P_IM3

2F₁- F₂

2F₂- F₁

F₁

F₂

FREQUENCY

∆ F

FIG. 8

•

Test conditions (to be speciﬁed)

F and F

1 2,

P and P in W or dBm.

Third order intermodulation products

in dBm or,

IM3

IMP = P

- P in dBc.

IM3

15-7

Vol. 1

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