| ID | 原文 | 译文 |
| 43946 | 分析了合格与失效电路的噪声功率谱密度和时间序列，并提取 GaAs PHEMTMMIC 功率放大器 1 /f 噪声的幅度值、噪声指数和转折频率。 | The noise power spectral density and timeseries of the qualified circuits and the failure ones were tested respectively, from which the amplitude, noise index and transition frequency of 1 /f noise of GaAs PHEMT MMIC power amplifier were extracted. |
| 43947 | 测试结果表明，MMIC 功率放大器的噪声主要为1 /f 噪声和热噪声。 | The test results show that the noise of MMIC power amplifier is mainly 1 /f noise and thermal noise. |
| 43948 | 从噪声功率谱密度来看，失效电路的噪声比合格电路的噪声大; | From the noise power spectral density, the noise of the failure circuit is larger than that of the qualified circuit. |
| 43949 | 从时间序列来看，失效与合格电路的噪声谱幅值不同， | From the terms of time series, the noise spectral amplitude of the failure circuits is different from that ofthe qualified ones. |
| 43950 | 失效电路的噪声谱幅值变化无规律且为爆裂噪声， | The variation of the noise spectral amplitude of the failure circuits is irregular, and the noise is considered to contain burst noise. |
| 43951 | 合格电路的噪声谱幅值变化有规律且主要是 1 /f 噪声; | The variation of the spectral amplitude of the qualified circuits isregular, and the noise is mainly 1/f noise. |
| 43952 | 从噪声参量提取来看，1 /f噪声的幅度值、噪声指数和转折频率均可作为噪声的表征参量。 | From the extraction of noise parameters, the amplitude value of1/f noise, noise index and transition frequency can be used as the characterization parameters of noise. |
| 43953 | 基于 CMOS 工艺，设计了一款可用于无线卫星通信系统的低相噪、低杂散、24 bit 分数分频频率综合器。 | A low phase noise, low spur and 24 bit fractional synthesizer for wireless satellite communications system was designed based on the CMOS process. |
| 43954 | 频率综合器内部集成 LC 压控振荡器 ( VCO) ，通过自动增益控制电路调整VCO 输出频率，采用电荷泵偏移电流线性化技术及 Δ-Σ 调制器加抖动技术改善相位噪声和杂散性能。 | The LC voltage-controlled oscillator (VCO)was integrated in the frequency synthesizer, and the output frequency of VCO was adjusted by the automatic gain control circuit.The charge pump current-offset linearization technique and Δ-Σ modulatordithering techniques were used to improve the phase noise and spur performance. |
| 43955 | 在整数模式和分数模式下，带内相位噪声分别为－106. 2 dBc /Hz 和－99. 7 dBc /Hz。 | In the integer mode andfraction mode the in-band phase noises are －106.2 dBc /Hz and －99.7 dBc /Hz, respectively. |