Reconfigurable radio frequency (rf) filtering circuits

A radio frequency (RF) filtering device, comprising:

• a RF filter that comprises:
• a common circuit comprising one or more first series resonators in series between an input terminal and an output terminal, and one or more first shunt resonators each electrically connected between the input terminal and the output terminal, and a common terminal;
• a first branch circuit electrically connected to the common circuit, the first branch circuit comprising a second series resonator;
• a second branch circuit electrically connected to the common circuit, the second branch circuit comprising a third series resonator;
• a first multiplexer having a second output terminal;
• a second multiplexer having a third output terminal;
• and
• an antenna comprising a switch and being electrically coupled to the output terminal of the RF filter, the first multiplexer, and the second multiplexer, wherein:
• in response to the switch being electrically coupled to the first branch circuit, the RF filter is multiplexed with the first multiplexer, and
• in response to the switch being electrically coupled to the second branch circuit, the RF filter is multiplexed with the second multiplexer.

A radio frequency (RF) filtering device, comprising:

• a first RF filter, comprising:
• a first common circuit comprising one or more first series resonators in series between a first input terminal and a first output terminal, and one or more first shunt resonators each electrically connected between a junction between the first input terminal and the first output terminal, and a common terminal;
• a first branch circuit electrically connected to the first common circuit at a first terminal between the first input terminal and the first output terminal, the first branch circuit comprising at least one of a second series resonator or a second shunt resonator;
• a second branch circuit electrically connected to the first common circuit at the first terminal, the second branch circuit comprising at least one of a third series resonator or a third shunt resonator;
• and
• a first switch being electrically connecting one of the first branch circuit or the second branch circuit to the first output terminal;
• a second RF filter, comprising:
• a second common circuit comprising one or more fourth series resonators in series between a second input terminal and a second output terminal, and one or more fourth shunt resonators each electrically connected between the second input terminal and the second output terminal, and a common terminal;
• a third branch circuit comprising a fifth shunt resonator electrically connected to the second common circuit at a second terminal, and another fifth shunt resonator electrically connected to the second common circuit at a third terminal, the fifth shunt resonator being different from the other fifth shunt resonator;
• and
• a fourth branch circuit comprising a sixth shunt resonator electrically connected to the second common circuit at the second terminal, and another sixth shunt resonator electrically connected to the second common circuit at the third terminal, the sixth shunt resonator being different from the other sixth shunt resonator;
• and
• an antenna electrically connected to the first output terminal and the second output terminal.