Gain bandwidth and noise characteristics of millimeter-wave YBa2Cu3O7 hot-electron bolometer mixers

被引：15

作者：

Li, CT ^{[1
]}

Deaver, BS

Lee, M

Weikle, RM

Rao, RA

Eom, CB

机构：

[1] Univ Virginia, Dept Phys, Charlottesville, VA 22903 USA

[2] Univ Virginia, Dept Elect Engn, Charlottesville, VA 22903 USA

[3] Duke Univ, Dept Mech Engn & Mat Sci, Durham, NC 27708 USA

来源：

APPLIED PHYSICS LETTERS | 1998年 / 73卷 / 12期

关键词：

D O I：

10.1063/1.122268

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Conversion gain bandwidth and noise characteristics are reported for lattice-cooled superconducting YBa2Cu3O7 hat-electron bolometers acting as low-power, wide-bandwidth heterodyne mixers at 75 and 585 GKz. Near 77 K, these mixers show intrinsic conversion gain as high as -16 dB using similar to 1 mu W of local oscillator power. The measured gain bandwidth is well described by a single Lorentzian with -3 dB frequency of 5-9 GHz. Measurements of output noise combined with conversion gain indicate an optimal input noise temperature of similar to 5000 K, significantly lower than calculations predict. (C) 1998 American Institute of Physics.

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页码：1727 / 1729

页数：3

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