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A Fixed Tuned Low Noise 600-700 GHz SIS Receiver |
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| Authors: | C C Chin M J Wang W L Shah W Zhang H W Cheng S C Shi and T Noguchi |
| Institution: | (1) Academia Sinica, Nankang, Institute of Astronomy and Astrophysics, Taipei, Taiwan, China;(2) Herzberg Institute, 5071 West Saanich Road, Victoria, BC, Canada, V9E 2E7;(3) Purple Mountain Observatory, Nanjing, China;(4) Present address: Academia Sinica, Institute of Astronomy and Astrophysics, Nankang, Taipei, Taiwan, China |
| Abstract: | We have designed and fabricated a fixed tuned low noise 600-700 GHz SIS mixer. Twin junctions connected in parallel was employed in the mixer design. A short microstrip tuning structure was used to minimize the RF signal loss at frequency above the energy gap. A receiver noise temperature below 200 K (without any loss correction) in the frequency range of 630 to 660 GHz was recorded. The lowest noise temperature of the receiver was 181 K (without any loss correction) at 656 GHz. |
| Keywords: | Sub-mm-waves SIS mixers and Receivers |
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