PXIE-5698  RF前置放大器 可进行矢量信号分析仪的测试

型号：PXIE-5698

26.5 GHz PXI RF放大器

PXIe-5698是一款RF前置放大器，采用了单槽PXI Express组成结构。NI 5698用于扩展PXIe-5668矢量信号分析仪的测试和监测功能，也可作为独立的前置放大器使用。PXIe-5698还提供了一条额外的RF信号旁通路径，使用的是机械式继电器，而非前置放大器，而且无需重新连接系统。

PXIE-5698前置放大器是指置于信源与放大器级之间的电路或电子设备，是专为接受来自信源的微弱电压信号而设计的。前置放大器能将弱电信号转换成输出信号足够强、噪声耐受性足够强的信号以用于进一步处理，避免信号失真。

PXIE-5698前置放大器在放大有用信号的同时也将噪声放大，低噪声前置放大器就是使电路的噪声系数达到最小值的前置放大器。对于微弱信号检测仪器或设备，前置放大器是引入噪声的主要部件之一。

Model: PXIE-5698

26.5 GHz PXI RF amplifier

The PXIe-5698 is an RF preamplifier with a single-slot PXI Express construction. The NI 5698 is used to extend the test and monitoring capabilities of the PXIe-5668 vector signal analyzer, and can also be used as a standalone preamplifier. The PXIe-5698 also provides an additional RF by-pass path, using mechanical relays rather than preamplifiers, and does not require rewiring the system.

The PXIE-5698 preamplifier is a circuit or electronic device placed between the signal source and the amplifier stage, which is designed to receive weak voltage signals from the source. The preamplifier can convert the weak current signal into a signal with strong enough output signal and strong enough noise tolerance for further processing to avoid signal distortion.

The PXIE-5698 preamplifier amplifies the noise while amplifying the useful signal, and the low-noise preamplifier is the preamplifier that minimizes the noise factor of the circuit. For weak signal detection instruments or equipment, the preamplifier is one of the main components to introduce noise.