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What does the best network analyzer look like?
425VNA 的选型标准很大程度上取决于应用或使用场景。 通常情况下，选型标准包括频率范围、需要的端口数量（从 2 个到 24个（多端口）乃至 48 个（使用开关矩阵））、输出功率，以及从经济型到手持式再到高端的仪器等级。 矢量网络分析仪既是信号发生器又是接收机...
View Full VersionIs it possible to generate DC power using an AC power supply?
可以。很多交流电源可以直接产生直流电，也可以通过在交流波形上叠加直流偏置来产生。
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What is IQ modulation?
237In-phase quadrature modulation (IQ modulation) is the main modulation scheme used in communication applications. It is popular because of its efficient use of bandwidth, meeting the increasingly urgent need for bandwidth in a world where data volumes are growing exponentially. It is important to test with simulated IQ signals because designers are always faced with a lack of bandwidth in an interference-ridden spectrum. Example...
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What is the difference between a DC power supply and an AC power supply?
360交流电适用于通过电网系统远距离输电和配电。 直流电是一种单向电荷流，比交流电更可靠，但不适合远距离输电。 大多数电子器件都使用直流电，因为它们的电压是恒定不变的，例如使用电池供电的器件。 有些器件也会使用整流器将交流电转换为直流电。 电源通常具有内...
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How does a vector network analyzer work?
361A network analyzer consists of a signal source and a receiver. The receiver will detect changes in the output signal of the device (or network) and then compare it to the source signal fed into the device. To evaluate the effect of the device on current and voltage, the VNA measures the resulting amplitude and phase response. This results in transmission and reflection measurements, impedance and s-parameters, which can be used by the test engineer to...
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