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COAXIAL Y-CIRCULATOR
TYPE 2CCH50-1 PROVIDING AUTOMATIC MAINTENANCE OF GIVEN VSWR VALUE.
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This Y-circulator was designed to protect
a klystron -type generator. Continuous power of generator's emission
is up to 70 kW in UHF range. Circulator provides the work of klystron
at full reflection in any phase from the load-resonator of electron
synchrotron.
Transmission element of the circulator is a balanced 50 Ohm stripline
with coaxial junctions EIA 6-1/8".
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| The results of test measurements on circulator |
| a) at continuous power ≤10 kW, fc=500
MHz, bandwidth (BW)=fc±10 MHz (test mode - short circuit in
any phase): |
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Parameter
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Insertion loss, max
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Isolation, min
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VSWR, max
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fc
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0,1
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26
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1,2
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BW
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0,2
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20
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1,2
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| b) in power range 10...70 kW, fc=505,8 MHz, BW=fc±2 MHz (test
mode - short circuit in any phase): |
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Parameter
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Insertion loss, max
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Isolation, min
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VSWR, max
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fc
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0,1
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26
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1,2
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BW
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0,2
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20
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1,2
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Circulator comprises two independent cooling systems: one for ferrite
parts, the other for central conductor.
Cooling liquid: desalted water at 21...31?C.
At the input of circulator, there is installed a duplex directional
coupler, from whence an incident and reflected power signals are being
transmitted to an electronic control unit responsible for automatic
maintenance of given VSWR=1,2.
Into the body of circulator are embedded three photodiodes. Their
signals go also to the above control unit. In case of electrical breakdown
in circulator, the automatic switching-off of power source does occur.
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