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Receptores y amplificadores
AWG 2021
Manual de usuario
Tektronix AWG 2021 Manual de usuario Pagina 26
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Figure 32. Quadrature amplitude modulated
(QAM) signal generated by combining an
amplitude modulated cosine carrier (upper) and
an amplitude modulated sine carrier. There are
16 symbols, so this is 16-QAM.
I In
I/Q Modulated RF Out
Discrete Q Signal
Discrete I Signal
Ch. 2 Out
Ch. 1 Out
AWG
RF Generator
Controller (PC)
Oscilloscope (DSO)
Q In
DUT
Figure 33. This block
diagram shows the
setup for quadrature
modulation. For more
information about
suitable RF sources,
contact your local
Tektronix
representative.
I pattern x carrier
Q pattern x carrier
Sum
1
2
...
21
22
23
24
25
26
27
28
29
30
31
...
35
36
Signals and Measurements for
1
Oscilloscope (DSO)
2
Spectrum Analyzer
2
AM with Adjacent Carriers
7
Magnitude (dBm)
8
Multi-Tone Testing
9
Multi-tone signal
10
Inverted tones
10
Frequency Modulation
11
FM with Dual-Tone Modulation
12
Demodulated output, expanded
13
Unexpanded spectrum
13
Expanded spectrum
13
FM Stereo
14
Right channel and spectrum
15
Left channel and spectrum
15
Pseudo-random noise sequence
16
Filtered sequence
16
Digital Modulation
19
Marker (trigger)
20
Carrier waveform
20
Phase modulated waveform
20
Baseband Digital Patterns
21
Digital AM — OOK and BPSK
22
Digital FM — FSK
23
Quadrature Modulation
25
I pattern x carrier
26
Q pattern x carrier
26
Data pattern
27
Gaussian impulse response
27
Resulting convolved signal
27
AWG data clock output
29
I baseband pattern
29
Q baseband pattern
29
2" Floppy Drive
33
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