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Measurements On Digital Modula
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2010-07-14
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Introduction
In the past, RF and microwave components destined
for analog systems have been tested using single or
multiple continuous wave (CW) signals to characterize
their performance and evaluate distortion. The prolif-
eration of digital modulationtechniques in wireless
communications has demanded new types of mesure-
ments requiring a digitally modulated stimulus and
the ability to analyze the device’s response. As third-
generation systems such as W-CDMA and cdma2000
evolve, and performance requirements become tighter,
these measurements have become more important.
This article will discuss these measurements, and
applications of these measurements in design verifica-
tion and troubleshooting.
In the past, RF and microwave components destined
for analog systems have been tested using single or
multiple continuous wave (CW) signals to characterize
their performance and evaluate distortion. The prolif-
eration of digital modulationtechniques in wireless
communications has demanded new types of mesure-
ments requiring a digitally modulated stimulus and
the ability to analyze the device’s response. As third-
generation systems such as W-CDMA and cdma2000
evolve, and performance requirements become tighter,
these measurements have become more important.
This article will discuss these measurements, and
applications of these measurements in design verifica-
tion and troubleshooting.
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