Front end module comprising an antenna switch

A front-end module for use with at least three radio frequency bands, the front-end module comprising:

• at least five signal paths;
• an antenna switch to electrically connect an antenna to one of the signal paths;
• wherein at least one of the signal paths comprises subpaths, a frequency separating network interfacing the at least one signal path to the subpaths;
• wherein the subpaths are for use in passing different radio frequency bands, the different radio frequency bands having frequency ranges that do not overlap;
• wherein the frequency separating network comprises a high-pass filter in a first subpath and a low-pass filter in a second subpath;
• wherein a center frequency of a first radio frequency band is lower, by approximately one octave or more, than a center frequency of a second radio frequency band;
• wherein the first subpath is a transmit path of the second radio frequency band;
• and
• wherein the second subpath is a transmit path of the first radio frequency band.