The fluorine ion sensitive field-effect transistor（F<sup>-</sup>-ISFET）is made by depositingvery thin LaF<sub>3</sub> film on grid of field-effect transistor with sputter method.The operating...The fluorine ion sensitive field-effect transistor（F<sup>-</sup>-ISFET）is made by depositingvery thin LaF<sub>3</sub> film on grid of field-effect transistor with sputter method.The operating principle,measuring method and measured results of F<sup>-</sup>-ISFET are given.The measured results show thatthis kind of sensor has higher sensitivity,shorter response time and better linearity.On the basisof experimental results,the factor of influencing the steadiness and repeatability of F<sup>-</sup>-ISFETare conjectured.展开更多
给出了几种 Ga As MESFET单片混频器结构与芯片测试结果比较。实验表明 ,在相同本振功率激励下 Ga As MMIC双栅混频器具有良好变频特性 ,栅混频器指标次之 ,漏混频器结构最简单 ,但变频特性不如前两种。另外 ,单片巴仑双平衡混频器具有...给出了几种 Ga As MESFET单片混频器结构与芯片测试结果比较。实验表明 ,在相同本振功率激励下 Ga As MMIC双栅混频器具有良好变频特性 ,栅混频器指标次之 ,漏混频器结构最简单 ,但变频特性不如前两种。另外 ,单片巴仑双平衡混频器具有高的动态范围和宽频段工作特点。展开更多
文摘The fluorine ion sensitive field-effect transistor（F<sup>-</sup>-ISFET）is made by depositingvery thin LaF<sub>3</sub> film on grid of field-effect transistor with sputter method.The operating principle,measuring method and measured results of F<sup>-</sup>-ISFET are given.The measured results show thatthis kind of sensor has higher sensitivity,shorter response time and better linearity.On the basisof experimental results,the factor of influencing the steadiness and repeatability of F<sup>-</sup>-ISFETare conjectured.
