Quantum-limited Mixing in a Transformer-coupled SIS Resonator for the 600 GHz Frequency Band

Physics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

6

Scientific paper

Quantum-limited mixer noise temperature has been achieved in Superconductor-Insulator-Superconductor (SIS) resonant mixer in the 600 - 720 GHz frequency range. Our mixer employs a single full-wave Nb/AlN/Nb tunnel junction resonator, fed by a quarter-wave transformer. The devices have low critical current density (~5 kA/cm2). The mixers were tested in a fixed-tuned waveguide mixer mount. Double-side-band receiver noise temperatures equivalent to a few quanta have been measured for a number of different devices. Using a 0.55 x 25 micron resonator, a noise temperature of 141 K was recorded at an LO frequency of 700 GHz with the mixer at 4.2 K. The noise temperature dropped to 111 K when the helium bath was pumped down to 2.8 K. High sensitivity has been attained over reasonably wide RF bandwidth, ~17%. The IF bandwidth of these mixers has also been investigated.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Quantum-limited Mixing in a Transformer-coupled SIS Resonator for the 600 GHz Frequency Band does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Quantum-limited Mixing in a Transformer-coupled SIS Resonator for the 600 GHz Frequency Band, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quantum-limited Mixing in a Transformer-coupled SIS Resonator for the 600 GHz Frequency Band will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-1498694

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.