| 摘要 |
PURPOSE: An N-way synthesizer for LPA(Linear Power Amplifier) having an AGC(Automatic Gain Control) function is provided to obtain output power similar to input power by performing an AGC function. CONSTITUTION: A signal input portion(10) receives an RF signal. An AGC portion(20) is used for controlling a gain of the received RF signal. The first insulating portion(30) is used for minimizing a reflective loss of an output signal of the AGC portion(20). An N-way distributor(40) is used for distributing an output signal of the first insulating portion(30) into a multitude of path. An attenuator(50) is used for maintaining the distributed values of the N-way distributor(40). The second insulating portion(60) is used for insulating each port for transmitting output signals of the attenuator(50). An amplifier(70) is used for amplifying each LPA signal. A switch(80) is used for transferring output signals of the amplifier(70) to a synthesizer(90). A synthesizer(90) is used for synthesizing output signals of the switch(80). A signal output portion(100) transmits output signals of the synthesizer(90). A control portion(110) controls the AGC portion(20) or the switch(80) to intercept an inferior port.
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