The Communications Edge TM
VG111
PCS/UMTS-band Variable Gain Amplifier
Product Information
VG111-PCB1900 Application Circuit Performance (cont’d)
S21 vs. Frequency
Vctrl=0V (Minimum attenuation)
S11 vs. Frequency
Vctrl=0V (Minimum attenuation)
S22 vs. Frequency
Vctrl=0V (Minimum attenuation)
0
-5
0
-5
15
14
13
12
11
10
-40°C
+25°C
+85°C
-40°C
+25°C
+85°C
-10
-15
-20
-10
-15
-20
-40°C
1750
+25°C
+85°C
1700
1800
Frequency (MHz)
S21 vs. Frequency vs. Attenuation Setting
1850
1900
1950
2000
1700
1750
1800
Frequency (MHz)
S11 vs. Frequency vs. Attenuation Setting
1850
1900
1950
2000
1700
1750
1800
Frequency (MHz)
S22 vs. Frequency vs. Attenuation Setting
1850
1900
1950
2000
20
10
0
0
-5
0
-5
0 dB Atten
10 dB Atten
20 dB Atten
5 dB Atten
15 dB Atten
25 dB Atten
-10
-15
-20
-25
-30
-10
-15
-20
-25
-30
0 dB Atten
10 dB Atten
20 dB Atten
5 dB Atten
15 dB Atten
25 dB Atten
-10
-20
0 dB Atten
5 dB Atten
10 dB Atten
25 dB Atten
15 dB Atten
20 dB Atten
1700 1750 1800 1850 1900 1950 2000
1700 1750 1800 1850 1900 1950 2000
1700 1750 1800 1850 1900 1950 2000
Frequency (MHz)
Frequency (MHz)
Frequency (MHz)
P1dB vs. Frequency
Vctrl=0V (Minimum attenuation)
Noise Figure vs. Frequency
Vctrl=0V (Minimum attenuation)
10
8
26
24
22
20
18
16
6
4
2
-40°C
1800
+25°C
+85°C
-40°C
+25°C
1920
Frequency (MHz)
+85°C
0
1880
1960
2000
1700
1750
1850
1900
1950
2000
Frequency (MHz)
Specifications and information are subject to change without notice
Page 3 of 7 February 2006
WJ Communications, Inc • Phone 1-800-WJ1-4401 • FAX: 408-577-6621 • e-mail: sales@wj.com • Web site: www.wj.com
WJCI [ WJ COMMUNICATION. INC. ]
