900MHz SiGe, High IP3,
Low-Noise Amplifiers
Table 4. MAX2642 Typical Scattering Parameters
(R BIAS = 510 ? , low-gain mode, V CC = +3.0V, T A = +25 ° C.)
FREQ
(MHz)
500
600
700
800
820
840
860
880
900
920
940
960
980
1000
1100
1200
1300
1400
1500
S11 MAG
0.757279
0.75734
0.696969
0.626874
0.616023
0.608751
0.600617
0.596488
0.593722
0.590101
0.588409
0.589625
0.588079
0.588646
0.597562
0.6066
0.617079
0.628195
0.640304
S11 PHASE
(DEGREES)
-68.0641
-84.3042
-98.422
-107.497
-108.596
-109.794
-110.754
-111.776
-112.739
-113.712
-114.834
-115.806
-116.828
-117.975
-124.002
-129.873
-136.272
-142.195
-147.446
S21 MAG
0.186886
0.715305
1.140352
1.272844
1.267541
1.258504
1.242296
1.22394
1.203776
1.181885
1.156787
1.129734
1.102653
1.074686
0.952505
0.852237
0.778154
0.718399
0.656535
S21 PHASE
(DEGREES)
-175.019
-146.702
-174.61
157.4571
152.644
148.0772
143.7583
139.7228
135.9799
132.3471
128.909
125.6671
122.5478
119.9067
108.5103
99.7348
92.06538
85.7905
78.77735
S12 MAG
0.032297
0.066113
0.099941
0.115242
0.116521
0.117601
0.119312
0.122318
0.124196
0.125203
0.126462
0.127369
0.127952
0.12743
0.134236
0.138354
0.142609
0.153771
0.149518
S12 PHASE
(DEGREES)
163.9787
148.5775
124.8504
103.1406
100.3007
97.74948
95.48379
93.07481
90.21815
86.9857
84.27329
82.07469
80.98836
79.48192
72.42102
65.08001
58.40858
52.64912
46.71009
S22 MAG
0.87996
0.71413
0.449346
0.201112
0.165909
0.137812
0.118557
0.106845
0.103446
0.108109
0.116508
0.129083
0.140436
0.151608
0.206216
0.252003
0.295689
0.33692
0.374046
S22 PHASE
(DEGREES)
-73.8882
-98.6736
-121.361
-127.267
-123.451
-116.955
-107.057
-93.617
-81.5882
-70.2192
-61.7886
-55.1485
-52.3827
-48.4917
-43.8143
-43.9084
-46.8967
-51.7496
-56.7658
10
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