VHF/UHF Low-Noise Amplifiers
Table 1. MAX2664 Typical Device S-Parameter at V CC = 2.7V, T A = +25 N C, Z 0 = 50 I
FREQUENCY (MHz)
470
500
530
560
590
620
650
680
710
740
770
800
830
860
|S11|
0.6664
0.6675
0.6674
0.6674
0.6673
0.6667
0.6651
0.6662
0.6651
0.6639
0.6624
0.6610
0.6598
0.6600
S11
ANGLE
-55.7
-58.9
-62.0
-65.0
-67.8
-70.6
-73.4
-75.9
-78.4
-80.9
-83.2
-85.5
-87.7
-89.7
|S21|
4.945
4.964
4.979
4.978
4.972
4.958
4.938
4.916
4.885
4.852
4.810
4.764
4.714
4.667
S21
ANGLE
167.1
163.9
160.8
157.8
154.8
152.0
149.1
146.3
143.7
140.9
138.2
135.7
133.1
130.7
|S12|
0.0449
0.0462
0.0474
0.0484
0.0500
0.0507
0.0523
0.0528
0.0539
0.0550
0.0560
0.0570
0.0573
0.0579
S12
ANGLE
36.7
35.5
34.9
33.6
32.4
31.0
30.8
29.5
27.9
26.6
25.6
25.1
24.0
22.1
|S22|
0.2847
0.2795
0.2769
0.2787
0.2819
0.2858
0.2937
0.3011
0.3098
0.3185
0.3276
0.3372
0.3478
0.3571
S22
ANGLE
-65.8
-64.5
-63.2
-62.2
-61.3
-60.9
-60.7
-60.7
-61.2
-61.6
-62.5
-63.5
-64.7
-66.1
Table 2. MAX2665 Typical Device S-Parameter at V CC = 2.7V, T A = +25 N C, Z 0 = 50 I
FREQUENCY (MHz)
60
90
120
150
180
210
240
|S11|
0.4608
0.4944
0.5160
0.5368
0.5601
0.5800
0.6006
S11
ANGLE
-13.9
-29.2
-42.2
-53.0
-62.9
-71.6
-79.3
|S21|
5.505
5.564
5.507
5.366
5.173
4.979
4.783
S21
ANGLE
-176.6
172.6
164.2
156.6
150.4
144.7
139.5
|S12|
0.0519
0.0546
0.0571
0.0593
0.0612
0.0630
0.0649
S12
ANGLE
27.3
21.5
19.2
16.5
15.9
14.3
13.1
|S22|
0.5060
0.4518
0.4270
0.4181
0.4036
0.3948
0.3870
S22
ANGLE
-32.8
-33.6
-35.0
-38.4
-41.7
-45.0
-48.4
Table 3. MAX2664 Simulated Device Noise Parameters at V CC = 2.7V, T A = +25 N C, Z 0 = 50 I
FREQUENCY (MHz)
470
500
530
560
590
620
650
680
710
740
770
800
830
860
FMIN (dB)
1.014
1.017
1.021
1.024
1.028
1.032
1.036
1.040
1.045
1.049
1.054
1.059
1.064
1.070
| G OPT |
0.2673
0.2680
0.2691
0.2703
0.2718
0.2735
0.2753
0.2774
0.2796
0.2820
0.2845
0.2871
0.2899
0.2927
G OPT ANGLE
47.4
50.1
52.8
55.4
58.0
60.6
63.1
65.5
67.9
70.3
72.6
74.9
77.1
79.3
r n *
0.1724
0.1709
0.1695
0.1681
0.1667
0.1653
0.1639
0.1626
0.1612
0.1599
0.1586
0.1573
0.1560
0.1547
* r n is normalized.
10
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