Low flicker-noise DC amplifier for 50 Ω sources

被引：0

作者：

Rubiola, E ^{[1
]}

Lardet-Vieudrin, F ^{[1
]}

机构：

[1] Univ Henri Poincare, ESSTIN, Nancy, France

来源：

PROCEEDINGS OF THE 2004 IEEE INTERNATIONAL FREQUENCY CONTROL SYMPOSIUM AND EXPOSITION | 2005年

关键词：

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This article analyzes the design of a low-noise dc amplifier primarly intended as the post-detection front-end for phase noise measurements. Low residual flicker when the amplifier is follows a source with 50 Q impedance is the most desired performance. This feature can only be appreciated if white noise is sufficiently low, and if an appropriate design ensures de stability. An optimal solution is proposed, in which the low-noise and dc-stability are achieved at a reasonable complexity and without need of temperature stabilization. Gain is accurate in amplitude and phase up to more than 100 kHz. This is relevant to dual-channel Fourier transform measurements, that is, the measurement of transfer functions and of cross spectra. The proposed amplifier turs out to be a general-purpose laboratory tool, useful in a variety of measurements other than phase noise.

引用

页码：471 / 474

页数：4

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