6-9GHz Direct Quadrature Modulator
Typical on Board Measurements
Tamb.= +25°C, VD1 = VD2 = VD3 = +4V, Idq = 100mA
USB versus RF Frequency
F
BB
= 10MHz / V
BBI
= V
BBQ
= 200mVpp
P
LO
= 0dBm
-20
-21
-22
30
CHM1481-QFG
LSB Rejection versus RF Frequency
F
BB
= 10MHz / V
BBI
= V
BBQ
= 200mVpp
P
LO
= 0dBm
40
35
LSB Rejection (dBc)
RF Output : USB
USB (dBm)
-23
-24
-25
-26
-27
-28
-29
-30
25
20
15
10
5
0
LSB Rejection
6
7
8
RF Frequency (GHz)
9
6
7
8
RF Frequency (GHz)
9
LO leakage versus RF Frequency
F
BB
= 10MHz / V
BBI
= V
BBQ
= 200mVpp
P
LO
= 0dBm
0
-5
-10
-15
-20
-25
-30
-35
-40
-45
-50
-55
-60
-65
-70
-75
-80
LO leakage versus LO Input Power
F
BB
= 10MHz / V
BBI
= V
BBQ
= 200mVpp
P
LO
= 0dBm
-10
-15
-20
LO leakage without cancalation
LO leakage with cancelation
6 GHz
7 GHz
8 GHz
9 GHz
LO leakage (dBm)
LO Leakage (dBm)
-25
-30
-35
-40
-45
-50
6
7
8
RF Frequency (GHz)
9
-10
-9
-8
-7
-6
-5 -4 -3 -2 -1 0
LO Input Power (dBm)
1
2
3
4
USB versus LO Input Power
F
BB
= 10MHz / V
BBI
= V
BBQ
= 200mVpp
F
LO
: [6 to 9 / 1] GHz
-24
DC Supply Current versus LO Input Power
F
BB
= 10MHz / V
BBI
= V
BBQ
= 200mVpp
F
LO
: [6 to 9 / 1] GHz
170
165
6 GHz
7 GHz
8 GHz
9 GHz
160
-25
USB Power (dBm)
-26
-27
-28
Supply Current (mA)
155
150
145
140
135
130
6 GHz
7 GHz
8 GHz
9 GHz
-29
-30
125
120
-10
-9
-8
-7
-6
-5 -4 -3 -2 -1 0
LO Input Power (dBm)
1
2
3
4
-10
-9
-8
-7
-6
-5 -4 -3 -2 -1 0
LO Input Power (dBm)
1
2
3
4
Ref. : DSCHM1481-QFG1356 - 22 Dec 11
5/10
Specifications subject to change without notice
Route Départementale 128, BP46 - 91401 ORSAY Cedex - FRANCE
Tel.: +33 (0) 1 69 33 03 08 - Fax: +33 (0) 1 69 33 03 09
UMS [ UNITED MONOLITHIC SEMICONDUCTORS ]
