[9a-A24-1~12] 11.3 Analog applications and their related technologies

11:15 AM - 11:30 AM JST(2:15 AM - 2:30 AM UTC)

[9a-A24-9] Gain Evaluation of a Fishbone-Type Kinetic Inductance Parametric Amplifier

〇(M1)Ayumi Tanaka¹, Hiroki Kutsuma², Sho Masui³, Hirotaka Terai⁴, Yasunobu Nakamura^5,6, Masanori Takeda¹ (1.Shizuoka Univ., 2.Tohoku Univ., 3.NAOJ, 4.NICT, 5.RIKEN, 6.Univ. of Tokyo)

Keywords:

parametric amplifier,kinetic inductance,NbTiN thin film

To realize an intermediate-frequency (IF) amplifier for large-scale multibeam receivers in radio astronomy, we designed and fabricated a NbTiN-based kinetic inductance traveling-wave parametric amplifier (KITWPA) using a fishbone-type transmission line. The fabricated device had a transmission line length of 0.24 m and was evaluated at 4 K. Experimental results confirmed amplification based on degenerate four-wave mixing through the observation of the generated idler signal. Furthermore, gain measurements showed that the device achieved approximately 3 dB gain over the frequency range from 1 to 3 GHz.