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Measurement and Control of RF
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2009-09-23
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Measurement and Control of RF Power (Part I):Introduction
Fig. 1. shows a typical modern communications signal chain. The signal to be transmitted
is generated at baseband by a digital-to-analog converter (DAC.) This signal is then
mixed up to an intermediate frequency (IF) where it is filtered before being mixed up to
the final radio frequency (RF.) On the receive side the inverse transformation takes place.
The received signal is amplified, mixed down to IF and filtered before being mixed down
to baseband where it is digitized.
Fig. 1. shows a typical modern communications signal chain. The signal to be transmitted
is generated at baseband by a digital-to-analog converter (DAC.) This signal is then
mixed up to an intermediate frequency (IF) where it is filtered before being mixed up to
the final radio frequency (RF.) On the receive side the inverse transformation takes place.
The received signal is amplified, mixed down to IF and filtered before being mixed down
to baseband where it is digitized.
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