RADITEK Newsletter
RADITEK Newsletter July 16, 2018
Cryogenic Isolators and Circulators 

Raditek is the leading Manufacturer of state of the art Cryogenic isolator and Circulators.
 
These devices work close to Absolute Temperature (as low as 0.01 degree Kelvin -272.99 degree Centigrade. We offer both single junction Isolators and circulators and double Junction models in both narrow band and wide band with exceptional performance. 
 
These devices have internal magnetic shielding, and we offer optional external magnetic shielding for either side by side stacking and to allow full operation in a high magnetic field environment.
 
Raditek Cryogenic Isolator and Circulators have been used for some 23 years in Radio Astronomy. Customers Microwave Radiometer are extremely sensitive receivers. They measure energy emitted at Millimeter-wave Frequencies from distant stars. They use Large Dish Antenna with high gain for more sensitivity and are located in remote areas for lowest RF interference. To further increase the receiver sensitivity every effort is made to lower the Noise Figure of the receiver LNA (low Noise Amplifier) and their associated Isolators and circulators. This is best done by operating at cryogenic temperatures, a Room Temperature LNA with a NF of 0.45 dB may decrease to 0.03 dB at 4 degree Kelvin
 
The new generation Quantum processors operate in Cryostats. The temperatures are as low as 0.01 degree Kelvin. Quantum Computing needs to be in an environment where all noise is eliminated. The Cryostats operate at a temperature where all noise is eliminated from the outside environment. To achieve these temperatures all devices, need to have the lowest loss and the best Thermal Conductivity. Raditek has been selected by major Quantum Computing manufacturers in the USA and Asia and provides exceptional wide band devices such as 4-8GHz at 0.01 degree Kelvin -272.99 degree Centigrade.
 
Our new offering is 4-12GHz at 0.02 degree Kelvin, -272.98 degree Centigrade with Isolation of 24dB in the double junction units
 
 

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