303 S. Technology Court, Broomfield, CO 80021
Phone: (800) SMI-MMIC
http://www.sirenza.com
10
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)
21 00
21 20
21 40
21 60
21 80
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 Frequency (MH z)
1
1.5
2
2.5
3
3.5
4
80
75
70
65
60
LO Freq. = 2110 M Hz
LO Freq. = 2140 M Hz
LO Freq. = 2170 M Hz
IQ Drive Level (Vpp, Diff.)
4.7
4.8
4.9
5
5.1
5.2
80
78
76
74
72
70
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
80
78
76
74
72
70
Vcc = 4.75 V
Vcc = 5.00 V
Vcc = 5.25 V
IQ Drive Level (Vpp, Diff.)
50
25
0
255075
100
80
78
76
74
72
70
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
80
78
76
74
72
70
Temp = -40 Deg. C
Temp = +25 Deg. C
Temp = +85 Deg. C
IQ Drive Level (Vpp, Diff.)
Figure 35. First Alternate Channel Power Vs. Temperature, LO
Drive = +4.0 dBm @ 2140 MHz.
Figure 36. First Alternate Channel Power Vs. I/Q Drive Level,
over Temperature Range, LO Drive = +4.0 dBm @ 2140 MHz.
Figure 33. First Alternate Channel Power Vs. Vcc,
LO Drive = +4.0 dBm @ 2140 MHz.
Figure 34. First Alternate Channel Power Vs. I/Q Drive Level,
over Vcc Range, LO Drive = +4.0 dBm @ 2140 MHz.
Figure 31. First Alternate Channel Power Vs. LO
Frequency, LO Drive = +4.0 dBm.
Figure 32. First Alternate Channel Power Vs. I/Q Drive Level,
LO Drive = +4.0 dBm.
Typical Device Performance Graphs
Baseband Signal: W-CDMA Test Model 1 w/ 64 DPCH,
Peak-to-Average Ratio = 10.54