FACTOID # 63: Brazil takes up 47.8% of South America.
 
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Encyclopedia > Circulator

In telecommunication, the term circulator has the following meanings:


1. A passive junction of three or more ports in which the ports can be accessed in such an order that when power is fed into any port it is transferred to the next port, the first port being counted as following the last in order.


2. In radar, a device that switches the antenna alternately between the transmitter and receiver.


Source: from Federal Standard 1037C and from MIL-STD-188


  Results from FactBites:
 
Circulator (718 words)
When RF from the transmitter is applied to the circulator there is normally a 10 to 15 percent drop in the isolation.
There is one caveat involving the use of ferrite circulators and that is ferrite is a non-linear device.
It is because of this that circulators may generate harmonics of the transmitter applied to it.
  More results at FactBites »


 

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