Radio frequency module and communication device
AssigneeMurata Manufacturing Co., Ltd.
InventorTakayuki Shinozaki
Life of this patent
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Abstract
A radio frequency module is capable of at least one of simultaneously transmitting, simultaneously receiving, or simultaneously transmitting and receiving a radio frequency signal of a first communication band and a radio frequency signal of a second communication band. The radio frequency module includes: a module board including a first principal surface and a second principal surface on opposite sides of the module board; a first duplexer having, as pass bands, a transmission band and a reception band of the first communication band; and a second duplexer having, as pass bands, a transmission band and a reception band of the second communication band. The first duplexer is disposed on the first principal surface and the second duplexer is disposed on the second principal surface.
Claims20
A radio frequency module for at least one of simultaneously transmitting, simultaneously receiving, or simultaneously transmitting and receiving a radio frequency signal of a first communication band and a radio frequency signal of a second communication band, the radio frequency module comprising:
- a board including a first principal surface and a second principal surface on opposite sides of the board;
- a first duplexer disposed on the first principal surface and including a first transmission filter and a first reception filter, wherein the first transmission filter has, as a pass band, a transmission band of the first communication band, and the first reception filter has, as a pass band, a reception band of the first communication band;
- a second duplexer disposed on the second principal surface and including a second transmission filter and a second reception filter, wherein the second transmission filter has, as a pass band, a transmission band of the second communication band, and the second reception filter has, as a pass band, a reception band of the second communication band;
- and
- an antenna switch disposed on the second principal surface, wherein
- in a plan view of the board, a footprint of the first duplexer overlaps with a footprint of the antenna switch, the footprint of the first duplexer does not overlap with a footprint of the second duplexer, and the second duplexer and the antenna switch are adjacent to each other on the second principal surface.
A communication device, comprising:
- an antenna;
- a radio frequency (RF) signal processing circuit configured to process a radio frequency signal to be transmitted by the 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, the radio frequency module comprising:
- a board including a first principal surface and a second principal surface on opposite sides of the board;
- a first duplexer disposed on the first principal surface and including a first transmission filter and a first reception filter, wherein the first transmission filter has, as a pass band, a transmission band of a first communication band, the first reception filter having, as a pass band, a reception band of the first communication band;
- and
- a second duplexer disposed on the second principal surface and including a second transmission filter and a second reception filter, wherein the second transmission filter has, as a pass band, a transmission band of a second communication band, the second reception filter having, as a pass band, a reception band of the second communication band, wherein
- an antenna switch disposed on the second principal surface, wherein
- in a plan view of the board, a footprint of the first duplexer overlaps with a footprint of the antenna switch, the footprint of the first duplexer does not overlap with a footprint of the second duplexer, and the second duplexer and the antenna switch are adjacent to each other on the second principal surface.
Dependencies are inferred from the claim text.