Design and characterization of sideband-separating SIS mixer RF hybrids for the Band 3 receiver (84-116 GHz)

Design and characterization of sideband-separating SIS mixer RF hybrids for the Band 3 receiver (84-116 GHz)
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用于频段 3 接收器 (84-116 GHz) 的边带分离 SIS 混频器 RF 混合器的设计和表征

DOI:
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发表时间:
2005
期刊:
2005 Joint 30th International Conference on Infrared and Millimeter Waves and 13th International Conference on Terahertz Electronics
影响因子:
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通讯作者:
S. Pan
S. Pan
中科院分区:
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文献类型:
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作者:
P. Dindo;S. Claude;D. Derdall;D. Henke;D. Erickson;G. Rodrigues;A. Lichtenberger;S. Pan

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Band3 ALMA 前端接收器采用边带分离 (2SB) 超导体-绝缘体-超导体 (SIS) 射频混合组件,以实现低噪声温度。 2SB RF 混合组件包括一个用于引导 RF 信号的馈电喇叭、用于分离 USB 和 LSB 信号的 RF 和 IF 正交混合器,以及两个用于将 100 GHz RF 信号下变频为 4-8 GHz IF 信号的 SIS 混频器。这些组件需要仔细匹配 USB 和 LSB 路径中信号的相位和幅度,以最大限度地减少接收器噪声。各个组件经过仔细的表征和测试,以构建合适的 2SB 射频混合组件。
The Band3 ALMA front end receiver incorporates sideband-separating (2SB) superconductor-insulator-superconductor (SIS) RF hybrid assemblies to achieve low noise temperatures. The 2SB RF hybrid assembly consists of a feedhorn to direct the RF signals, RF and IF quadrature hybrids for separating the USB and LSB signals, and two SIS mixers to down convert the 100 GHz RF signals to 4-8 GHz IF signals. These assemblies require careful matching of the phase and amplitude of the signals in the USB and LSB pathways to minimize receiver noise. The individual components undergo careful characterization and tests to build suitable 2SB RF hybrids assemblies.