Acoustic wave filter with different types of resonators in acoustic filter component and/or multiplexer

A multiplexer comprising:

• a first filter including a plurality of series temperature compensated surface acoustic wave resonators, a multi-mode surface acoustic wave filter in series with the series temperature compensated surface acoustic wave resonators, a series bulk acoustic wave resonator coupled between the series temperature compensated surface acoustic wave resonators and a common node, and shunt bulk acoustic wave resonators together arranged to filter a radio frequency signal, a first shunt bulk acoustic wave resonator of the shunt bulk acoustic wave resonators has a resonant frequency that is lower than a resonant frequency of a first series temperature compensated surface acoustic wave resonator of the series temperature compensated surface acoustic wave resonators, the first filter being a receive band pass filter having a first passband that includes two operating bands associated with different radio access technologies, and the first filter being arranged to support dual connectivity;
• a second filter coupled to the first filter at the common node, the second filter being a transmit filter having a second passband associated with a first of the two operating bands, the second passband being below the first passband, and the second passband being separated from the first passband by a gap that is less than 2% of a frequency halfway between the first passband and the second passband;
• a third filter coupled to the common node, the third filter being a transmit filter having a third passband associated with a second of the two operating bands, the third passband being above the first passband;
• and
• an inductor that is co-packaged with the series temperature compensated surface acoustic wave resonators and the shunt bulk acoustic wave resonators.

A wireless communication device comprising:

• a first filter including series temperature compensated surface acoustic wave resonators, a series bulk acoustic wave resonator, and shunt bulk acoustic wave resonators together arranged to filter a radio frequency signal, the first filter being a receive band pass filter having a first passband that includes two operating bands associated with different radio access technologies, and the series temperature compensated surface acoustic wave resonators are coupled to a common node by way of the series bulk acoustic wave resonator;
• a second filter coupled to the first filter at the common node, the second filter being a transmit filter having a second passband associated with a first of the two operating bands, the second passband being below the first passband;
• a third filter coupled to the common node, the third filter being a transmit filter having a third passband associated with a second of the two operating bands, the third passband being above the first passband, and the third passband being separated from the first passband by a gap that is less than 2% of a frequency halfway between the first passband and the third passband;
• and
• at least one antenna configured to concurrently receive a first radio frequency signal associated with the first of the two operating bands and a second radio frequency signal associated with the second of the two operating bands, the first filter configured to support dual connectivity by concurrently filtering the first radio frequency signal and the second radio frequency signal.