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BA3011

更新时间： 2024-01-06 20:39:12

品牌	Logo	应用领域
TEMEX		射频微波
页数	文件大小	规格书
58页	1044K
描述
3 Port Circulator, 62MHz Min, 72MHz Max

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技术参数
数据手册

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BA3011 技术参数

生命周期：	Obsolete	Reach Compliance Code：	unknown
风险等级：	5.57	其他特性：	SMA-F
构造：	COAXIAL	最大输入功率 (CW)：	43.01 dBm
最大插入损耗：	1 dB	最大工作频率：	72 MHz
最小工作频率：	62 MHz	最高工作温度：	55 °C
最低工作温度：	-10 °C	射频/微波设备类型：	3 PORT CIRCULATOR
最大电压驻波比：	1.35	Base Number Matches：	1

BA3011 数据手册

FERRITE DEVICES

Technical information /Technology

AY-junction circulator can be made into an isolator by adding an internal termination on port # 3, for example.

The device passes signals with low loss (port # 1 to port # 2) and with high loss in the opposite direction.

It is used to "isolate" one microwave device from another. It can, for example, protect expensive,

high-power RF sources from variations in loading conditions or mismatching (see ﬁgure 3).

4 -Po rt d iffe re n t ia l p h a s e s h ift c irc u la t o r

This four-port-device is normally used with one load, such as a high-power circulator (duplexer),

or with two dummy loads, such as a high-power isolator.

This circulator consists of three basic parts:

•

Hybrid folded magic tee

Twin parallel ferrite phase shift sections

3 dB coupler

Re s o n a n c e is o la t o r - Wave g u id e d evic e s

By magnetically biasing a ferrite inside a waveguide, the non-reciprocal effect is obtained: with low

losses in one direction and high losses (isolation) in the opposite direction.

Those isolators are only used for low and medium power (see ﬁgure 4).

The ferrite material has to dissipate the return power due to mismatch.

PORT

MAGNET

PORT

WAVEGUIDE

3 dB

HYBRID

COUPLER

PORT 4

1/2 DIFFERENTIAL

CELLES

FOLDED

MAGIC TEE

4 PORT DIFFERENTIAL PHASE SHIFT CIRCULATOR

MAGNET

FERRITE

MATERIAL

FIG. 4

FIG. 5

Fe rrit e s w it ch e s

These devices change the polarity of the magnetic bias (N ❑ S) and the RF-signal direction

of circulation. This is made by a coil instead of a magnet. This technology is used for ferrite switches

in both product lines:

•

Y-junction

4-port differential phase shift device

15-4

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