Patent ID: 8581571

Claim:
A measurement apparatus that measures a characteristic of a filter, comprising: a first transmission line that has the filter connected therein, the first transmission line receiving a multi-tone signal having signal components at a plurality of frequencies from an input end thereof, passing the multi-tone signal through the filter, and outputting the multi-tone signal from an output end thereof; a second transmission line that receives the multi-tone signal from an input end thereof, propagates the multi-tone signal therein, and outputs the multi-tone signal from an output end thereof; and a measuring section that calculates the characteristic of the filter based on the multi-tone signal output from the output end of the first transmission line and the multi-tone signal output from the output end of the second transmission line, wherein the first transmission line includes: a first path in which the filter is connected, the first path receiving the multi-tone signal from an input end thereof, passing the multi-tone signal through the filter, and outputting the multi-tone signal from an output end thereof; and a second path that receives the multi-tone signal from an input end thereof and outputs the multi-tone signal from an output end thereof while bypassing the filter.