Front end module supporting device to device communication using plural frequency bands and electronic device including the same
A front end module supporting a plurality of frequency bands and an electronic device includes a plurality of duplexers, a first switch configured to connect any one of the plurality of duplexers to an antenna, a second switch configured to connect a first port, to which a Tx signal of a first communication or a Tx signal of a second communication is input, to any one of Tx ports of the plurality of duplexers, and to connect a second port, from which a Rx signal of the second communication is output, to one of the Tx ports of the plurality of duplexers. According to certain embodiments, the number of switches occupying a large space can be minimized, and thus a space occupied by the front end module supporting device to device (D2D) communication can be reduced.
1. A communication circuit of an electronic device comprising:
a plurality of duplexers including a first duplexer and a second duplexer;
a first switch configured to connect any one of the plurality of duplexers to an antenna; and
a second switch including at least two poles and a plurality of throws, the at least two poles including a first pole connected to a first port of the communication circuit, to which a Tx signal of a first communication or a Tx signal of a second communication is input, and a second pole connected to a second port of the communication circuit, to which a Rx signal of the second communication is output, each throw of the plurality of throws being connected to a Tx port of each duplexer of the plurality of duplexers,
wherein the second switch is configured to:
connect the first pole to one of the plurality of throws, and
connect the second pole to another of the plurality of throws, and
wherein the first communication supports frequency division multiplexing, and the second communication supports time division multiplexing.
2. The communication circuit of claim 1 , wherein a frequency band of the second communication uses a transmission band of a frequency band of the first communication.
3. The communication circuit of claim 1 , further comprising an amplifier deployed between the first port and the second switch to amplify the Tx signal of the first communication or the Tx signal of the second communication.
4. The communication circuit of claim 3 , wherein the second switch connects a pole connected to a signal line through which a signal output from the amplifier is transmitted to any one of the Tx ports of the plurality of duplexers.
5. The communication circuit of claim 3 , comprising a front end module included and packaged on one substrate.
6. The communication circuit of claim 1 , wherein the second port is connected to a single line coupled to signal lines output from the Tx ports of the plurality of duplexers.
7. The communication circuit of claim 1 , wherein the second communication is a communication using a part of an uplink frequency band used by the first communication.