Radio frequency module and communication device

A communication device, comprising:

• a radio frequency (RF) signal processing circuit configured to process a radio frequency signal to be transmitted by an antenna and a radio frequency signal received by the antenna;
• and
• a radio frequency module configured to transfer the radio frequency signals between the antenna and the RF signal processing circuit, wherein
• the radio frequency module comprises
• a module board including a first principal surface and a second principal surface on opposite sides of the module board;
• an input/output terminal;
• a first transfer circuit configured to transfer a radio frequency signal of a low band group;
• a second transfer circuit configured to transfer a radio frequency signal of a middle band group, the middle band group being higher than the low band group;
• and
• a third transfer circuit configured to transfer a radio frequency signal of a high band group, the high band group being higher than the middle band group, wherein
• the first transfer circuit includes:
• a first filter connected to the input/output terminal and having the low band group as a passband;
• and
• one or more first circuit components disposed on a first transmission path through which a transmission signal of the low band group is transferred,
• the second transfer circuit includes a second filter connected to the input/output terminal and having the middle band group as a passband,
• the third transfer circuit includes a third filter connected to the input/output terminal and having the high band group as a passband,
• the second filter and the third filter are disposed on the first principal surface, and
• at least one of the one or more first circuit components is disposed on the second principal surface.

A radio frequency module, comprising:

• a module board including a first principal surface and a second principal surface on opposite sides of the module board;
• an input/output terminal;
• a first transfer circuit configured to transfer a radio frequency signal of a first band group;
• a second transfer circuit configured to transfer a radio frequency signal of a second band group, the second band group being different from the first band group;
• and
• a third transfer circuit configured to transfer a radio frequency signal of a third band group, the third band group being different from the first band group and the second band group, wherein
• the first transfer circuit includes one or more first circuit components disposed on a first transmission path through which a transmission signal of the first band group is transferred,
• the second transfer circuit includes a second filter connected to the input/output terminal and having the second band group as a passband,
• the third transfer circuit includes a third filter connected to the input/output terminal and having the third band group as a passband,
• the second filter and the third filter are disposed on the first principal surface, and
• at least one of the one or more first circuit components is disposed on the second principal surface.