303 S. Technology Court, Broomfield, CO 80021
Phone: (800) SMI-MMIC
http://www.sirenza.com
11
EDS-104229 Rev B
STQ-2016-3 Direct Quadrature Modulator
1
1.522.5
33.5
4
85
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.)
21 00
21 20
21 40
21 60
21 80
85
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
22.533.5
4
85
80
75
70
65
60
LO Fre q. = 2110 MHz
LO Fre q. = 2140 MHz
LO Fre q. = 2170 MHz
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.)
Figure 41. Second Alternate Channel Power Vs. Vcc, LO Drive =
+4.0 dBm @ 2140 MHz.
Figure 42. Second Alternate Channel Power Vs. I/Q Drive Level,
over Vcc Range, LO Drive = +4.0 dBm @ 2140 MHz.
Figure 39. Second Alternate Channel Power Vs. LO
Frequency, LO Drive = +4.0 dBm.
Figure 40. Second Alternate Channel Power Vs. I/Q Drive
Level, LO Drive = +4.0 dBm.
Figure 37. Second Alternate Channel Power Vs.
LO Drive Level, LO Frequency = 2140 MHz.
Figure 38. Second Alternate Channel Power Vs. I/Q Drive
Level, LO Frequency = 2140 MHz.
6
4
20
2
4
6
8
85
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)
Second Alternate Channel Power
Typical Device Performance Graphs
Baseband Signal: W-CDMA Test Model 1 w/ 64 DPCH,
Peak-to-Average Ratio = 10.54