A 200-300 GHz SIS mixer-preamplifier with 8 GHz IF bandwidth
A 200-300 GHz SIS mixer-preamplifier with 8 GHz IF bandwidth
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具有 8 GHz IF 带宽的 200-300 GHz SIS 混频前置放大器
DOI：
10.1109/mwsym.2001.967220
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
A. Lichtenberger
中科院分区：
文献类型：
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作者：
E. Lauria;A. Kerr;M. Pospieszalski;S. Pan;J. Effland;A. Lichtenberger
介绍了一种中频带宽为8 GHz的200-300 GHz SIS混频前置放大器。该混频器在具有低中频电容和电感的电路中使用Nb/Al-氧化物/Nb隧道结。混频模块被设计成直接安装在4-12 GHz InP HFET前置放大器的主体上，混频偏置通过前置放大器的输入电路提供。在230 GHz的LO频率下，混频-前置放大器的增益为30-35dB，整个中频频段的DSB接收机噪声温度为45-57K。这是迄今为止SIS接收器报告的最大瞬时带宽。
A 200-300 GHz SIS mixer-preamplifier with an IF bandwidth of 8 GHz Is described. The mixer uses Nb/Al-oxide/Nb tunnel junctions in a circuit with low IF capacitance and inductance. The mixer block is designed to mount directly on the body of the 4-12 GHz InP HFET preamplifier and mixer bias is provided through the input circuit of the preamplifier. At a LO frequency of 230 GHz, the mixer-preamp gain is 30-35 dB, and the DSB receiver noise temperature is 45-57 K across the whole IF band. This is the largest instantaneous bandwidth reported to date for an SIS receiver.