参数资料
型号: AD8349ARE
厂商: ANALOG DEVICES INC
元件分类: 衰减器
英文描述: 700 MHz to 2700 MHz Quadrature Modulator
中文描述: 700 MHz - 2700 MHz RF/MICROWAVE QPSK MODULATOR
封装: MO-153ABT, TSSOP-16
文件页数: 12/28页
文件大小: 969K
代理商: AD8349ARE
AD8349
Rev. 0 | Page 12 of 28
–160
–158
–154
–146
–142
–140
–150
–156
–148
–144
–152
N
LO INPUT (dBm)
–10
2
0
–8
–6
–4
–2
0
WITHOUT AC INPUT
WITH AC INPUT
Figure 31. 20 MHz Offset Noise Floor vs. LO Input Power
(F
LO
= 2140 MHz, T
A
= 25°C)
–60
–50
–40
–45
–55
–30
–35
C
–20
–25
–10
–15
–6
–4
–10
–8
–2
0
2
LO INPUT (dBm)
0
F
LO
= 2140MHz
F
LO
= 900MHz
F
LO
= 1900MHz
Figure 32. Carrier Feedthrough vs. LO Input Power (F
BB
= 1 MHz, I and Q
Inputs Driven in Quadrature at 1.2 V p-p Differential, T
A
= 25°C)
–60
–50
–40
–45
–55
–30
–35
S
–25
–20
–10
–15
–6
–4
–10
–8
–2
0
2
LO INPUT (dBm)
0
F
LO
= 2140MHz
F
LO
= 900MHz
F
LO
= 1900MHz
Figure 33. Sideband Suppression vs. LO Input Power (F
BB
= 1 MHz, I and Q
Inputs Driven in Quadrature at 1.2 V p-p Differential, T
A
= 25°C)
0
5
10
15
20
25
30
35
P
–0.100
–0.125
–0.175 –0.150
–0.200
–0.075 –0.050 –0.025
0
MAGNITUDE IMBALANCE (dB)
0
Figure 34. I and Q Inputs Quadrature Phase Imbalance Distribution
(F
LO
= 2140 MHz, F
BB
= 1 MHz, I and Q Inputs Driven in
Quadrature at 1.2 V p-p Differential, T
A
= 25°C)
0
5
10
15
20
25
30
35
P
0.50
0.75
0
0.25
1.00
1.25
1.50
PHASE (I-Q) IMBALANCE (Degrees)
0
Figure 35. I and Q Inputs Amplitude Imbalance Distribution
(F
LO
= 2140 MHz, F
BB
= 1 MHz, I and Q Inputs Driven in
Quadrature at 1.2 V p-p Differential, T
A
= 25°C)
0
5
10
15
20
25
30
35
P
OP1dB (dBm)
5.0
4.5
5.5
6.0
6.5
0
Figure 36. OP1dB Distribution. (F
LO
= 2140 MHz, F
BB
= 1 MHz, I and Q Inputs
Driven in Quadrature at 1.2 V p-p Differential, T
A
= 25°C)
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