BROADBAND LOW LOSS COUPLER, TEST TOOL USING THE COUPLER, AND TEST METHOD OF RADIO SIGNAL

摘要

PROBLEM TO BE SOLVED: To provide a broadband coupler that is lower in the loss and higher in the stability in comparison with those of prior arts.;SOLUTION: The coupler for detecting a radio signal emitted from an antenna provided on electronic equipment includes: a conductive case; and two or more resonance conductors provided in the case and electromagnetically coupled with each other so as to act like a filter, each of the resonance conductors includes a first resonance conductor and a second resonance conductor electrically connected to a coaxial connector, the case has an opening through which the electronic apparatus or the antenna is inserted to the case, and the first resonance conductor electromagnetically couples to the antenna much more strongly than the other resonance conductors when the electronic apparatus or the antenna is inserted to the case.;COPYRIGHT: (C)2006,JPO&NCIPI