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E4446A PSA 频谱分析仪，3 Hz - 44 GHz
[E4446AS收]主要特性与技术指标
[E4446AS收]性能
[E4446AS收]+/-0.19 dB 绝对幅度精度
[E4446AS收]154 dBm 显示平均噪声电平（DANL）
[E4446AS收]10 kHz 偏置时的相噪：-118 dBc/Hz
[E4446AS收]81 dB W-CDMA ACLR 动态范围
[E4446AS收]分析带宽
[E4446AS收]10 MHz 分析带宽（用于基本模式的选件 B7J）
[E4446AS收]可选 40 或 80 MHz 分析带宽，以便捕捉和测量复杂信号
[E4446AS收]适用于 40 或 80 MHz 分析带宽的 -78 dB（额定值）三阶互调
[E4446AS收]适用于校准后的 VSA 测量的 300 MHz 分析带宽
[E4446AS收]灵活性
[E4446AS收]灵活的平台，包含 16 个可选且易于使用的内置测量专用软件和硬件选件
[E4446AS收]标配 PowerSuite 一键式功率测量
[E4446AS收]通用数据分析、可视化、计量自动化的数据分析软件 MATLAB。PSA 系列 [E4446AS收]MATLAB软件
[E4446AS收]描述
[E4446AS收]E4446A PSA 高性能频谱分析仪可测量和监测频率高达 44 GHz 的复杂射频[E4446AS收]、微波和毫米波信号。使用外混频选件可进一步扩展频率范围：使用安捷[E4446AS收]伦外混频器时可达到 110 GHz；使用其他厂商的混频器时可达到 325 GHz-
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HP8590系列：
HP8594Q，HP8591A，HP8596E，HP8590D，HP8590A，HP8590E，
HP8593E，HP8593EM，HP8591B，HP8591C，HP8594E，HP8594EM，
HP8590C，HP8590L，HP8595A，HP8595E，HP8592D，HP8592E，
Hp8591E，HP8591EM，HP8594A，HP8594C，HP8596A，HP8596EC，
HP8595EM，HP8596EM，HP8592A，HP8592B，HP8593A，HP8593B，HP8592L，
Introduction
Advances in RF and microwave communication technology
have extended system performance to levels previously
unattainable. Design emphasis on sensitivity and selectivity
have resulted in dramatic improvements in those areas.
However, as factors previously limiting system performance have been overcome, new limitations arise and certain parameters take on increased importance. One of
these parameters is the phase noise of signal sources
used in pulsed RF and microwave systems.
In pulsed radar systems, for example, the phase noise of
the receiver local oscillator sets the minimum signal level
that must be returned from a target in order to be detectable. In this case, phase noise affects the selectivity of the
radar receiver which in turn determines the effective range
of the overall system.
Since the overall dynamic range of the radar system is
influenced by the noise of the transmitted signal, it is not
only important to know the absolute noise of individual
oscillators but to know the residual or additive noise of
signal processing devices like power amplifiers and pulse
modulators. Because the final signal in most radar systems
is pulsed, making absolute phase noise measurements on
the pulsed carrier is essential to determining the overall
performance of the system.