Radio-frequency module and communication device

A radio-frequency module, comprising:

• a substrate having a first main surface and a second main surface opposite to each other;
• a first hybrid filter having a first acoustic wave resonator, a first inductor, and a first capacitor;
• and
• a first radio-frequency circuitry,
• wherein a pass band width of the first hybrid filter is greater than a resonant band width of the first acoustic wave resonator,
• one of the first acoustic wave resonator, the first inductor, and the first capacitor is disposed on the first main surface, and
• the first radio-frequency circuitry is disposed on the second main surface,
• wherein the first radio-frequency circuitry is a third low-noise amplifier,
• the radio-frequency module further includes an external connection terminal disposed on the second main surface,
• the first hybrid filter is a reception-only filter connected to the third low-noise amplifier, and
• in a plan view of the substrate, the first hybrid filter and the third low-noise amplifier at least partially overlap each other.

A communication device, comprising:

• a radio-frequency (RF) signal processing circuit configured to process a radio-frequency signal received by an antenna;
• and
• a radio-frequency module configured to propagate the radio-frequency signal between the antenna and the RF signal processing circuit,
• wherein the radio-frequency module includes
• a substrate having a first main surface and a second main surface opposite to each other;
• a first hybrid filter having a first acoustic wave resonator, a first inductor, and a first capacitor, and
• a first radio-frequency circuitry,
• wherein a pass band width of the first hybrid filter is greater than a resonant band width of the first acoustic wave resonator,
• one of the first acoustic wave resonator, the first inductor, and the first capacitor is disposed on the first main surface, and
• the first radio-frequency circuitry is disposed on the second main surface,
• wherein the first radio-frequency circuitry is a first low-noise amplifier,
• the radio-frequency module further includes
• an external connection terminal disposed on the second main surface,
• a first power amplifier,
• a first switch connected to the first hybrid filter for switching between connection and disconnection between the first hybrid filter and an antenna connection terminal, and
• a second switch connected to the first hybrid filter, the first low-noise amplifier, and the first power amplifier for switching between connection between the first hybrid filter and the first low-noise amplifier and connection between the first hybrid filter and the first power amplifier,
• the first hybrid filter is a transmission-and-reception filter connected to the first low-noise amplifier and the first power amplifier, and
• in a plan view of the substrate, the first hybrid filter and the first switch at least partially overlap each other.