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Achieve Measurement Accuracy in Microwave Test Systems

Application Notes

Abstract

The explosive growth of Wireless LAN is driving new IEEE WLAN standards that require very high throughput. In today’s WLAN, higher order modulation and an increased number of channels (MIMO) are common challenges faced by RF designers and engineers in maintaining measurement accuracy.

This application note describes how to enhance the measurement accuracy and flexibility in signal analysis by using the M9168C PXI programmable step attenuator module.

The M9168C provides precise attenuation as required with a known set of uncertainty. This ensures optimum signal quality delivery in various signal conditioning scenarios such as; overloading, gain compression, and distortion. 

Introduction

Today’s wireless LAN readily enables distribution of high definition content in the home that must support highspeed and high-data rate streaming, and must also be able to mirror high definition video from PC tablets to smart TVs. These requirements bring forth the need to extend RF bandwidth (up to 160 MHz), more MIMO spatial streams (up to 8), multi-user MIMO, and high-density modulation (up to 256 QAM).

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