Patent ID: 9461620
Filing Date: 2016-10-04
CPC Classification: H03H

Claim Text:
1. An elastic wave splitter comprising: an antenna terminal; a transmission terminal; a reception terminal; a transmission filter that is connected between the antenna terminal and the transmission terminal and that is defined by an elastic wave filter; a reception filter that is connected between the antenna terminal and the reception terminal and that is defined by an elastic wave filter; and a resonant circuit that is connected between the antenna terminal and a ground potential and includes an elastic wave resonator and a capacitor connected in series with the elastic wave resonator; wherein a resonant frequency of the resonant circuit is positioned in a frequency band of an interference wave that causes intermodulation distortion to be generated; the capacitor includes a plurality of comb-tooth electrodes; the elastic wave resonator includes a plurality of comb-tooth electrodes; and the capacitor and the elastic wave resonator are arranged such that a direction in which the plurality of comb-tooth electrodes of the capacitor extend defines an angle of about 90° with a direction in which the plurality of comb-tooth electrodes of the elastic wave resonator extend.