Agilent Measuring Frequency Response with E5061B LF Network Analyzer 5990-5578EN c20141209 [34] free download

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Measuring Frequency Response with the Keysight Technologies E5061B LF-RF Network Analyzer Application Note Introduction Evaluating frequency responses of components and circuits is essential for ensuring the performance of electronic equipment. Especially in the case of the high-reliability electronic equipment used in automotive, medical, and aerospace and defense industries, it is necessary to evaluate a wide variety of components and circuits in the low- to high-frequency ranges. Among these applications, the low-frequency network analyzer plays an important role in ensuring the stable and reliable operation of low-frequency analog circuits such as sensor systems and power supplies. You need a better understanding of low-frequency network analysis (gain-phase measurements) as well as RF network analysis (S-parameter measurements). This application note describes fundamentals of low-frequency network analy- sis using the E5061B LF-RF network analyzer. Here we mainly discuss simple low-frequency 2-port device measurements and associated topics such as high-impedance probing techniques and high-attenuation measurements. Table of Contents E5061B-3L5 LF-RF Network Analyzer... 3 Basic Measurement Configurations ... 4 50 DUTs ... 5 Non-50 DUTs, example 1 ... 5 Non-50 DUTs, example 2 ... 7 In-circuit probing measurements ... 8 IFBW Setting for Low-Frequency Measurement ... 10 High-Impedance Probing Methods ... 11 Signal Separation for Ratio Measurement ... 13 High-Attenuation Measurement at Low Frequencies ... 15 OP Amp Measurement Example ... 20 Closed-loop gain... 20 Open-loop gain, phase margin ... 22 CMRR ... 27 PSRR... 29 Output impedance... 31 References ... 33 Table 1. Guideline for selecting test ports Test ports Situation Application S-parameter test port Transmission and reflection