303 S. Technology Court, Broomfield, CO 80021
Phone: (800) SMI-MMIC
http://www.sirenza.com
9
EDS-104229 Rev B
STQ-2016-3 Direct Quadrature Modulator
6
4
20
2
4
6
8
158
156
154
152
150
I/Q Drive = 1 Vpp, Diff.
I/Q Drive = 2 Vpp, Diff.
I/Q Drive = 3 Vpp, Diff.
I/Q Drive = 4 Vpp, Diff.
LO Drive Level (dBm)
4.7
4.8
4.9
5
5.1
5.2
69
68
67
66
65
64
I/Q Drive = 1.5 Vpp, Diff.
I/Q Drive = 1.7 Vpp, Diff.
I/Q Drive = 1.9 Vpp, Diff.
Vcc (Vdc)
1.4
1.5
1.6
1.7
1.8
1.9
69
68
67
66
65
64
Vcc = 4.75 V
Vcc = 5.00 V
Vcc = 5.25 V
IQ Drive Level (Vpp, Diff.)
50
25
0
255075
100
69
68
67
66
65
64
I/Q Drive = 1.5 Vpp, Diff.
I/Q Drive = 1.7 Vpp, Diff.
I/Q Drive = 1.9 Vpp, Diff.
Temperature (Deg. C )
1.4
1.5
1.6
1.7
1.8
1.9
69
68
67
66
65
64
Temp = -40 De g. C
Temp = +25 De g. C
Temp = +85 De g. C
IQ Drive Level (Vpp, Diff.)
6
4
20
2
4
6
8
80
75
70
65
60
I/Q Drive = 1 V pp, Diff.
I/Q Drive = 2 V pp, Diff.
I/Q Drive = 3 V pp, Diff.
I/Q Drive = 4 V pp, Diff.
LO Drive L evel (d Bm)
1
1.522.5
33.5
4
80
75
70
65
60
LO D rive = -5 dBm
LO D rive = -2 dBm
LO D rive = -1 dBm
LO D rive = +4 dBm
LO D rive = +7 dBm
IQ Dr ive Level ( Vpp, D iff.)
Figure 29. First Alternate Channel Power Vs. LO Drive Level, LO
Frequency = 2140 MHz.
Figure 30. First Alternate Channel Power Vs. I/Q Drive Level, LO
Frequency = 2140 MHz.
Figure 27. Adjacent Channel Power Vs.
Temperature, LO Drive = +4.0 dBm @ 2140 MHz.
Figure 28. Adjacent Channel Power Vs. I/Q Drive Level, over
Temperature Range, LO Drive = +4.0 dBm @ 2140 MHz.
Figure 25. Adjacent Channel Power Vs. Vcc, LO
Drive = +4.0 dBm @ 2140 MHz.
Figure 26. Adjacent Channel Power Vs. I/Q Drive Level, over
Vcc Range, LO Drive = +4.0 dBm @ 2140 MHz.
First Alternate Channel Power
Typical Device Performance Graphs
Baseband Signal: W-CDMA Test Model 1 w/ 64 DPCH,
Peak-to-Average Ratio = 10.54