A new amplifier design for fast low-noise far-infrared detectors using a pyroelectric element

被引：7

作者：

Schouten, RN ^{[1
]}

机构：

[1] Delft Univ Technol, Fac Appl Phys, NL-2600 GA Delft, Netherlands

来源：

MEASUREMENT SCIENCE AND TECHNOLOGY | 1998年 / 9卷 / 04期

关键词：

Bandwidth - Dielectric amplifiers - Pyroelectricity - Signal to noise ratio;

D O I：

10.1088/0957-0233/9/4/017

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A new concept for pyroelectric detector circuits with a flat signal bandwidth of 10 kHz or more is reported. It leads to signal-to-noise ratio improvement by a factor of 50 compared with commercially available fast pyroelectric detector circuits. The approach is also showing a larger bandwidth, ease of implementation and noise improvement compared with add-on frequency-compensating circuits for bandwidth enlargement. A demonstration circuit has been built using a low-cost pyroelectric detector element. The design can be used for amplification of other high-impedance sources too.

引用

页码：686 / 691

页数：6