SWITCHING DEVICE, COMMUNICATION APPARATUS, AND SIGNAL TRANSMISSION METHOD

PROBLEM TO BE SOLVED: To make it possible to exchange a change-over switch of the output of a high frequency output apparatus during its operation. SOLUTION: A switch 111-1 connects / disconnects a moving contact 121-1 to / from a fixed contact 122-1. Further, the length of a conduction line 124-1 from the fixed contact 122-1 to a connection terminal 123-1 of the switch 111-1 is selected to be an integer multiple of the half wavelength of the signal transmitted through the conduction line 124-1. The length of a conduction line 133-1 in an output transmission line 112 from a branch point 131 to a contact 132-1 being a contact of the switch 111-1 is selected to be an integer multiple of the half wavelength of the signal transmitted through the conduction line 133-1. Similarly, the length of a conduction line 133-2 in the output transmission line 112 from the branch point 131 to a contact 132-2 being a contact of the switch 111-2 is selected to be an integer multiple of the half wavelength of the signal transmitted through the conduction line 133-2. COPYRIGHT: (C)2004,JPO