Specifications and information are subject to change without notice.

WJ Communications, Inc

x Phone 1-800-WJ1-4401 x FAX: 408-577-6621 x e-mail: sales@wj.com x Web site: www.wj.com

Page 4 of 7 April 2007

FH1

High Dynamic Range FET

Reference Design: 260 MHz, 25 dB Gain

Frequency

MHz

250

260

270

Gain

dB

25.2

25.1

24.9

S11

dB

-23

-22

-13

S22

dB

-12

-14

-17

P1dB

dBm

+22.4

OIP3

dBm

+39.5

Noise Figure

dB

1.8

1.9

2.1

Supply Voltage

V

+5

Supply Current

mA

140

0.2

0.22

0.24

0.26

0.28

0.3

Frequency (GHz)

Gain / Return Loss

21

22

23

24

25

26

-25

-20

-15

-10

-5

0

DB(|S(2,1)|) (L)

DB(|S(1,1)|) (R)

DB(|S(2,2)|) (R)

ID=C2

C=1000 pF

C=0.2 pF

ID=R1

L=120 nH

ID=L1

L=220 nH

R=3.3 Ohm

ID=C3

C=1.8e4 pF

ID=C1

C=1000 pF

ID=C6

C=1000 pF

ID=C5

R=1e4 Ohm

ID=R6

R=2000 Ohm

ID=R7

R=2000 Ohm

1

2

NET="FH1"

+5V

Notes:

1.

Circuit Board Material: .0

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2.

Components not shown in the schematic are either not used or loaded with a thru. Gain for the circuit can be adjusted slightly with the modification of the feedback resistance.

Reference Design: 460 MHz, 20 dB Gain

Frequency

MHz

450

460

470

Gain

dB

19.9

19.9

19.9

S11

dB

-24

-24

-21

S22

dB

-16

-15

-15

P1dB

dBm

+21.6

OIP3

dBm

+42

Noise Figure

dB

1.95

2.08

2.17

Supply Voltage

V

+5

Supply Current

mA

140

0.34

0.38

0.42

0.46

0.5

0.54

0.58

Frequency (GHz)

Gain / Return Loss

16

17

18

19

20

21

-25

-20

-15

-10

-5

0

DB(|S(2,1)|) (L)

DB(|S(1,1)|) (R)

DB(|S(2,2)|) (R)

ID=C3

C=1000 pF

ID=C2

C=1000 pF

ID=R1

L=36 nH

ID=L1

L=100 nH

ID=C5

R=5000 Ohm

ID=C1

C=1000 pF

ID=R6

R=750 Ohm

ID=R7

R=750 Ohm

ID=C6

C=1000 pF

ID=R2

L=10 nH

1

2

NET="FH1"

+5V

Notes:

1.

Circuit Board Material: .0

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r

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2.

Components not shown in the schematic are either not used or loaded with a thru. Gain for the circuit can be adjusted slightly with the modification of the feedback resistance.