Hochfrequenzvorrichtung

摘要

A high frequency circuit apparatus whose thermal dissipation characteristics is excellent and which is advantageous in the compact design and in the massproductivity is provided. The high frequency circuit apparatus comprises a multilayer substrate 12 in which direct current circuit patterns 16 and 17 for transferring direct current signals are formed on an upper substrate 121 of the multilayer substrate 12 while a high frequency current circuit pattern 18 for transferring high frequency signals is formed on a lower substrate located lower than the upper substrate.