Broadband 230GHz finline mixer for astronomical imaging arrays
The authors report the successful operation of an antipodal finline quasi-particle SIS mixer at 230GHz. The mixer is fed by a waveguide diagonal horn and uses planar circuit technology and integrated tuning. The mixer is testd over the frequency range 213-265GHz and a receiver noise temperature of ≃...
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| Fformat: | Journal article |
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1997
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| Crynodeb: | The authors report the successful operation of an antipodal finline quasi-particle SIS mixer at 230GHz. The mixer is fed by a waveguide diagonal horn and uses planar circuit technology and integrated tuning. The mixer is testd over the frequency range 213-265GHz and a receiver noise temperature of ≃60K DSB over the whole of this range is obtained. This work has shown that superconducting finline mixers have low noise and are easy to manufacture, and are therefore suitable for large-format imaging arrays. |
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