HPMX-2006 Mixer Port Impedances
GHz
0.05
0.10
0.15
0.20
0.25
0.30
0.40
0.50
0.60
0.70
0.80
0.90
Mag.
0.86
0.81
0.84
0.88
0.93
0.91
0.80
0.81
0.80
0.80
0.85
0.84
Deg.
-4
-3
-1
-3
-9
-15
-19
-23
-28
-30
-34
-39
GHz
0.50
[1]
0.75
1.00
1.25
1.50
1.75
1.75
[2]
2.00
2.25
2.50
2.75
3.00
Mag.
0.49
0.48
0.46
0.42
0.40
0.31
0.24
0.20
0.20
0.16
0.37
0.53
Deg.
-49
-63
-73
-82
-102
-114
-131
147
87
15
-131
168
GHz
0.50
0.75
1.00
1.25
1.50
1.75
2.00
2.25
2.50
2.75
3.00
Mag.
0.60
0.55
0.52
0.36
0.18
0.17
0.20
0.24
0.28
0.34
0.37
Deg.
82
38
-5
-35
-44
-17
5
13
17
12
3
Figure 8. Impedance of Mixer IF Port.
Circuit of Figure 11 with 1 k Pull up
Resistors for the IFs and LO and RF Ports
Terminated in 50
Ω.
Figure 9. Impedance of Mixer LO Port.
[1] Circuit of Figure 11 with IF and RF
Ports Terminated in 50
Ω.
[2] As above but LO RC combination in
Figure 11 changed from 12
Ω
and
12 pF to 0
Ω
and 2.7 pF (recommended
use for >1.75 GHz).
Figure 10. Impedance of Mixer RF
Port.
Circuit of Figure 11 with IF and LO Ports
Terminated in 50
Ω.
Typical Scattering Parameters,
Common Emitter, Z
O
= 50
Ω,
V
CC
= 3 V, I
C
= 23 mA
Freq.
GHz
0.1
0.5
0.8
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
2.5
3.0
Mag.
0.51
0.37
0.37
0.37
0.39
0.39
0.40
0.41
0.40
0.40
0.38
0.37
0.36
0.33
0.33
0.31
0.31
0.30
0.32
0.32
0.32
S
11
Ang.
149
144
120
113
104
96
88
81
75
67
62
61
58
62
62
64
70
75
79
84
94
dB
19.72
17.42
16.56
16.24
15.99
15.55
15.16
15.07
14.50
13.37
12.69
12.46
11.64
11.17
10.81
9.99
9.37
8.66
8.10
7.16
4.45
S
21
Mag.
9.68
7.43
6.73
6.49
6.30
5.99
5.73
5.67
5.31
4.66
4.31
4.20
3.82
3.62
3.47
3.16
2.94
2.71
2.54
2.28
1.67
Ang.
-26
-49
-76
-85
-94
-101
-112
-120
-125
-134
-145
-148
-153
-161
-168
-175
178
173
170
166
134
dB
-37.08
-39.17
-43.10
-36.48
-40.00
-41.94
-47.96
-38.42
-40.92
-46.02
-33.98
-33.15
-32.77
-34.42
-34.89
-29.37
-30.75
-30.75
-33.15
-32.77
-28.40
S
12
Mag.
0.014
0.011
0.007
0.015
0.010
0.008
0.004
0.012
0.009
0.005
0.020
0.022
0.023
0.019
0.018
0.034
0.029
0.029
0.022
0.023
0.038
S
22
Ang.
-43
11
1
25
22
28
118
68
85
147
99
102
102
88
91
96
102
89
90
89
99
Mag.
0.91
0.78
0.80
0.83
0.84
0.84
0.84
0.85
0.87
0.84
0.85
0.84
0.84
0.79
0.77
0.75
0.72
0.69
0.67
0.65
0.49
Ang.
-3
-16
-22
-23
-26
-29
-32
-33
-36
-40
-40
-44
-49
-51
-54
-58
-62
-65
-70
-76
-103
7-70
AGILENT [ AGILENT TECHNOLOGIES, LTD. ]
