Patent ID: 7110528

Claim:
An electronic circuit, comprising: first bidirectional terminals and second bidirectional terminals both for signals in first and second different frequency spectrums; a first mixer coupled with the first bidirectional terminals for mixing signals in said first and second frequency spectrums; a first amplifier connected with the first mixer; one or more first filters connected with the first amplifier for passing the signals in said first frequency spectrum and for blocking the signals in said second frequency spectrum; one or more second amplifiers connected with the one or more first filters for amplifying signals in said first frequency spectrum; a second mixer for mixing amplified signals in said first frequency spectrum and signals in said second frequency spectrum; a third amplifier connected with the second mixer; one or more second filters connected with the third amplifier for passing the signals in said second frequency spectrum and for blocking the signals in said first frequency spectrum; and one or more fourth amplifiers connected with, said one or more second filters and with the first mixer for amplifying the signals in said second frequency spectrum from said one or more second filters and for providing said amplified signals to said first mixer.