Patent ID: 6937845

Claim:
A high-frequency module comprising: a high-frequency filter arranged to attenuate a spurious high-frequency signal; a high-frequency switch arranged to switch a transmission signal and a reception signals, wherein the high-frequency switch attenuates the third harmonic of the reception signal; a transmitter-side balun arranged to convert a balanced signal into an unbalanced signal; and a receiver-side balun arranged to convert an unbalanced signal into a balanced signal, wherein the receiver-side balun attenuates the second harmonic of the reception signal; wherein said high-frequency filter is disposed between an antenna and a first terminal of said high-frequency switch, a second terminal of said high-frequency switch is connected to an unbalanced terminal of said transmitter-side balun, a third terminal of said high-frequency switch is connected to an unbalanced terminal of said receiver-side balun, and said high-frequency filter is a high-pass filter or a notch filter.