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US 2002/0171508 A1Published application
Front end module
AssigneeTDK Corporation
InventorsNobumi Harada, Satoshi Suga, Masashi Iwata, Hideki Hasegawa, Hiroshi Tadanoh
Life of this patent
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Abstract
Such a front end module is arranged as a module using an antenna switch (6), a low pass filter (5), a surface acoustic wave filter (7) and a balun (8) integrated by a multilayer substrate (11) and components incorporated in or mounted on the multilayer substrate (11).
Claims2
A front end module comprising:
- an antenna switch for selectively connecting an antenna to a transmitter circuit or a receiver circuit;
- a low pass filter for removing harmonics from a transmit signal output from a transmitter circuit;
- an unbalanced-output surface acoustic wave filter for filtering a signal received via said antenna switch of said antenna;
- and
- a balun for converting an unbalanced signal that has passed through said surface acoustic wave filter,
- wherein said antenna switch, said low pass filter, said surface acoustic wave filter and said balun are arranged as a module integrated by a multilayer substrate and components incorporated in or mounted on said multilayer substrate.
3 more elements
Dependencies are inferred from the claim text.