CONNECTION STRUCTURE OF CIRCUIT BOARD

PROBLEM TO BE SOLVED: To provide connection structure of a circuit board, in which when high frequency devices 5, 6 for transmitting a high frequency signal are connected by using microstrip lines, unnecessary radio wave radiation and a loss of a transmission signal caused at the connections can be suppressed. SOLUTION: The microstrip line connected to the high frequency device 5 and the microstrip line connected to the high frequency device 6 and apart from the microstrip line connected to the high frequency device 5 are inserted inside a waveguide through an open hole provided in an H plane of the waveguide 9 and, and both microstrip lines are arranged in parallel with an E plane of the waveguide 9. COPYRIGHT: (C)2008,JPO&INPIT