amplitude of signal meaning in English

信号振幅

Vector modulators have been used in this paper to vary the phase and amplitude of signals in the in - band spurious cancellation loop of feed - forward power amplifiers ( ffpa ) . in the two - tone test , 3 . 5ghz ffpa developed in this paper shows more than 35db improvement in the third - order inter - modulation ( im3 ) , offers approximately - 60dbc im3 output , achieves the expected goal , and meets the communication requirement
本文研制的3 . 5ghz前馈放大器采用了矢量调制器来实现前馈环路的幅度和相位调节，在双音测试结果中，三阶交调im3的改善超过了35db ，前馈系统输出im3抑制近- 60dbc ，达到了预期指标，满足了通信需要。