| 摘要 |
PURPOSE: A radio frequency simulator system(RFSS) using a radio frequency generator modulator(RFGM) is provided to realize a hardware simulation by mixing a radio frequency signal transmitted from the subjects of test and controlling the radio frequency level. CONSTITUTION: An input adapter(61) receives a composite signal(S1), a coherent oscillating signal(S2), and a stable local oscillating signal(S31,S32), which are radio frequency signals generated from the subjects of test in a junction unit. An attenuator(62), installed on the latter of the input adapter(61), receives the radio frequency signal, drops it to a suitable level, and outputs it. An amplifier(63) amplifies and outputs the radio frequency signal output from the attenuator(62). An isolator(64) is installed on the latter of the amplifier(63) for stability of the radio frequency signal. A signal mixing unit(65) is installed on the latter of the isolator(64), mixes the S31 and S32 of the radio frequency signals, creates and outputs a mixing signal(S3). An output adapter(66) outputs the radio frequency signals(S1,S2,S3) passing through the amplifier(63), the isolator(64), and the signal mixing unit(65).
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