| 摘要 |
PURPOSE:To amplify plural signals having different frequencies in two directions with a common amplifier by using additionally a frequency converter. CONSTITUTION:A signal f1' sent from an input terminal 11 is delivered through BPFs 12 and 17, an amplifier 20 and BPFs 17' and 12'. While the signal f1 is supplied to a repeater 10 via a mixer 13 and BPFs 16 and 17 connected to a local oscillator f0 and delivered through a mixer 13'' and a BPF16' connected to an HPF21 and the oscillator f0 respectively. Then a signal f2' is delivered from the terminal 11 via a BPFs 14' and 19' and then the amplifier 20 and BPFs 19 and 14. While a signal f2 is delivered from the terminal 11 via the mixers 13'' and BPFs 15' and 19' and then the amplifier 20, a BPF19, an HPF18, the mixer 13' and a BPF15. Thus it is possible to amplify two signals having different frequencies in two directions.
|
