Study on multiband heterodyne receiver technologies aiming at octave instantanous bandwidth

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K18057
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Electron device/Electronic equipment
• Research Institution: National Astronomical Observatory of Japan
• Principal Investigator: Kojima Takafumi 国立天文台, 先端技術センター, 助教 (00617417)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 低雑音 / ヘテロダイン / 超伝導ミキサ / 周波数マルチプレクサ / マルチバンド / 広帯域

Outline of Final Research Achievements

We have successfully developed a radio frequency (RF) filter and low-noise heterodyne mixer-preamplifier modules for a multiband receiver at 400 GHz band. The RF filter adopted a hybrid-coupled type of the multiplexer to divide the frequency range of 405-480 GHz into 3 bands. The measurement result showed excellent agreement with the simulation. The heterodyne module integrates a superconductor-insulator-superconductor (SIS) mixer with a cryogenic low-noise pre-amplifier. The measurement demonstrates 3 times wider bandwidth than the one in current existing receivers maintaining low-noise temperature. By combining the multiplexer and the modules, we demonstrated noise temperature of 200 K for a 3-band receiver. The result indicates that this approach is promising for future low-noise and wideband receiver applications.

Free Research Field

超伝導および高周波エレクトロニクス