New wireless thermometer for RF and microwave thermal therapy using an MMIC in an SiBJT VCO type
New wireless thermometer for RF and microwave thermal therapy using an MMIC in an SiBJT VCO type
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DOI：
10.1109/22.809017
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发表时间：
1999-12-01
影响因子：
4.3
通讯作者：
Tanaka, M
中科院分区：
文献类型：
--
作者：
Kotsuka, Y;Orii, K;Tanaka, M
提出了一种基于三维单片微波集成电路（MMIC）技术的新型无线体温计，该体温计采用硅双极晶体管压控振荡器（Si VCO）。采用有限元法对加热特性进行了理论分析。结果表明，MMIC温度计可用于强电磁波环境下的射频/微波热疗。实验研究了硅压控振荡器MMIC的基本特性。因此，VOC的振荡频率（约4.35 GHz）在30 ° C至50 ° C的范围内与温度呈极高的线性关系。使用体模材料的测试表明，原型温度计可以在超过8 cm的软组织深度处被检测到。
A nem wireless thermometer is proposed fur thermal therapy that uses a silicon bipolar transistor voltage-controlled oscillator (Si VCO), based on three-dimensional monolithic-microwave; Integrated-circuit (MMIC) technology. A theoretical analysis of heating characteristics was conducted using the finite-element method. The result suggests the MMIC thermometer may be used for RF/microwave thermal therapy in a strong electromagnetic: wave circumstances. The fundamental characteristics of an Si VCO MMIC are examined experimentally. As a result, the VOC's oscillation frequency (around 4.35 GHz) is extremely linear against temperature in the range from 30 degrees C to 50 degrees C. Tests using a phantom material show that a prototype thermometer can be detected at depths of more than 8 cm of soft tissue.