WR19(40～60GHz)矩形波导微量热计设计

摘要

The design and correction factor evaluation of a WR19 (40～60 GHz) rectangular waveguide microcalorimeter which is based on a kind of thermistance power sensor is presented. This new kind of microcalorimeter will be developed as a 40 ～ 60 GHz microwave power standard of NIM. It can measure the effective efficiency of a wider frequency range of transfer standards than that of the previous microcalorimeter. The evaluation of correction factor is also given.%介绍了一种基于热敏电阻功率座的对称双线结构的WR19(40～60 GHz)矩形波导微量热计的设计和修正因子计算方法.该微量热计将作为中国计量科学研究院40 ～60 GHz微波功率基准,它能够测量比原微量热计频段更宽的传递标准的有效效率,同时给出了测量修正因子的方法.