Enhancement of the rf characteristics of a soda dummy load by reduction of the skin depth effect

In addition, the mechanical effort is also added for sealing the soda water at the top region of dummy load due to the water pressure imbalance on the sealing region. The water pressure distribution of the top region for the conventional and new one are calculated by the commercial software for the fluid dynamics named CFX and a bar type supporter made by a high purity alumina (96%) fix the water leak problem. The cold rf-test using the network analyzer shows that the VSWR is less than 1.15 up to 200 MHz for the new one whereas the VSWR for the conventional one is as high as 1.3 around 200 MHz. The VSWR is less than 1.35 for the temperature variations of the soda water from 35 °C to 45 °C.