[18p-B5-1~15] 11.4 Analog applications and their related technologies

4:45 PM - 5:00 PM JST(7:45 AM - 8:00 AM UTC)

[18p-B5-14] Evaluation of a 150 GHz Josephson Array Oscillator Using Balanced SIS Mixers

〇Yosuke Murayama¹, Akira Kawakami², Yoshinori Uzawa^1,3, Wenlei Shan^1,3, Kazumasa Makise^1,3,4, Sho Masui¹, Takafumi Kojima^1,3, Akihira Miyachi¹, Ezaki Shohei¹ (1.NAOJ, 2.NICT, 3.SOKENDAI, 4.AIST)

Keywords:

Josephson oscillator,Millimeter wavelength oscillator,Amplifier

We are developing a low-noise, low-power microwave amplifier using SIS mixers. As a candidate for the local oscillator (LO) source to pump SIS mixers, we are considering a Josephson oscillator. In this study, we fabricated a 150 GHz Josephson array oscillator and conducted its characterization using balanced SIS mixers. We measured the I-V curve and noise performance, confirming that it provides sufficient LO power to pump SIS mixers and has a low LO noise temperature. In the presentation, we will report these details along with the results of the linewidth evaluation.