Active antennas in medical microwave radiometry
Active antennas in medical microwave radiometry
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DOI：
10.1049/el:20070577
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发表时间：
2007-05-24
影响因子：
1.1
通讯作者：
Klemetsen, O.
中科院分区：
文献类型：
--
作者：
Jacobsen, S.;Klemetsen, O.
研究了有源天线在微波辐射测温中的应用，在生物医学诊断中具有潜在的应用前景。通过在天线探头中加入一个只有边缘自加热的微小低噪声放大器，可以提高宽带辐射计的温度精度，从而使整个系统的噪声系数更小。概念验证是通过提高有损介质中热对象的可探测性来进行实验验证的。
The use of active antennas in microwave radiometric thermometry is investigated, where prospective applications are within biomedical diagnostics. By incorporating a tiny low-noise amplifier, with only marginal self-heating, in the antenna probe, it is shown that the temperature accuracy of a broadband radiometer can be improved as a consequence of a smaller overall system noise figure. Proof of concept is verified experimentally through increased detectability of a hot object within a lossy medium.