![](http://datasheet.mmic.net.cn/330000/FLL21E040IK_datasheet_16397308/FLL21E040IK_3.png)
3
High Voltage - High Power GaAs FET
FLL21E040IK
S-Parameters @V
DS
=28V, I
DS
=500mA, f=1.7 to 3 GHz
S11
S22
2.0GHz
25
Ω
50
Ω
2.2
2.1
2.2
2.1
2.0GHz
0
∞
+10j
+25j
+50j
+100j
+250j
-10j
-25j
-50j
-100j
-250j
100
Ω
10
Ω
S12
S21
0.6
-90°
0.4
12
±180°
Scale for |S
21
|
0°
+90°
S
S
1
|
2.0GHz
8
2.1
2.2
!freq(GHzS11(mag)S11(ang) S21(mag)S21(ang) S12(mag)S12(ang) S22(mag)S22(ang)
0.1
0.953
174.7
2.608
176.3
0.2
0.889
171.9
4.640
130.1
0.3
0.895
172.6
3.664
0.4
0.931
169.8
2.268
0.5
0.938
166.2
1.511
1
0.948
149.4
0.614
-29.3
1.1
0.953
146.0
0.588
-37.3
1.2
0.952
142.3
0.597
-44.5
1.3
0.948
138.4
0.624
-52.9
1.4
0.944
133.8
0.689
-61.7
1.5
0.943
129.6
0.799
-72.1
1.6
0.920
124.8
0.964
-83.5
1.7
0.905
119.3
1.243
-97.0
1.8
0.858
112.8
1.718
-114.1
1.9
0.807
105.3
2.575
-136.9
1.95
0.768
101.1
3.263
-151.0
2
0.714
94.9
4.253
-168.2
2.05
0.625
83.9
5.890
169.2
2.1
0.388
59.6
8.431
135.3
2.11
0.304
50.9
9.088
125.7
2.12
0.199
38.9
9.530
115.7
2.13
0.082
11.6
9.900
104.5
2.14
0.076
-116.4
9.952
2.15
0.204
-147.0
9.710
2.16
0.328
-161.3
9.243
2.17
0.438
-172.0
8.617
2.18
0.523
179.6
7.824
2.19
0.598
172.6
7.157
2.2
0.648
166.5
6.453
2.25
0.788
147.2
3.966
2.3
0.836
137.6
2.609
-10.9
2.35
0.862
130.9
1.839
-24.0
2.4
0.877
126.5
1.364
-34.2
2.5
0.901
119.0
0.826
-49.5
2.6
0.910
112.6
0.558
-62.6
2.7
0.913
107.8
0.401
-73.0
2.8
0.917
103.2
0.305
-81.7
2.9
0.918
99.0
0.243
-90.1
3
0.920
94.8
0.206
-96.9
0.001
0.002
0.004
0.002
0.002
0.004
0.005
0.006
0.006
0.007
0.009
0.011
0.014
0.018
0.026
0.030
0.038
0.050
0.066
0.069
0.072
0.071
0.073
0.068
0.064
0.059
0.051
0.047
0.040
0.023
0.014
0.010
0.006
0.003
0.004
0.002
0.001
0.002
0.002
70.7
65.7
20.9
22.6
10.9
27.4
32.1
24.5
31.8
28.9
13.0
5.0
-4.4
-21.8
-41.4
-57.4
-74.7
-97.1
-132.4
-141.9
-152.1
-163.8
-174.9
172.1
160.5
151.0
140.7
132.6
124.9
96.9
75.7
64.0
43.1
10.9
17.9
-3.1
-5.4
-12.9
-25.9
0.565
0.851
0.850
0.838
0.855
0.913
0.906
0.907
0.907
0.903
0.889
0.855
0.828
0.794
0.743
0.727
0.721
0.722
0.706
0.698
0.684
0.665
0.652
0.641
0.640
0.647
0.662
0.673
0.691
0.753
0.796
0.828
0.853
0.883
0.899
0.909
0.925
0.934
0.937
-153.1
-165.1
-178.9
177.2
173.8
153.8
149.7
145.6
141.3
136.8
131.4
125.8
119.6
112.9
104.5
98.8
90.1
73.3
33.0
19.4
71.9
39.5
20.1
3.3
-14.6
-35.0
-55.9
-76.1
-94.5
-111.0
-124.3
-135.8
-171.7
170.6
159.6
151.9
141.3
133.6
127.7
122.5
117.9
114.2
92.4
80.5
68.8
58.1
48.7
40.2
32.8
5.9