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 5 of 7 April 2007

FH1

High Dynamic Range FET

Reference Design: 790 MHz, 19 dB Gain

Frequency

GHz

746

790

835

Gain

dB

19.2

19.4

19.3

S11

dB

-20

-28

-15

S22

dB

-22

-23

-22

P1dB

dBm

+22

OIP3

dBm

+41

Noise Figure

dB

2.3

Supply Voltage

V

+5

Supply Current

mA

140

0.7

0.75

0.8

0.85

0.9

Frequency (GHz)

Gain / Return Loss

17

17.5

18

18.5

19

19.5

20

-30

-25

-20

-15

-10

-5

0

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

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

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

ID=C4

C=1e4 pF

ID=C2

C=100 pF

ID=C1

C=100 pF

ID=R6

R=560 Ohm

ID=R7

R=560 Ohm

ID=C3

C=100 pF

ID=C6

C=100 pF

ID=L1

L=27 nH

ID=R1

L=8.2 nH

ID=C5

L=10 nH

ID=R2

L=2.2 nH

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: 790 MHz, 17 dB Gain

Frequency

GHz

746

790

835

Gain

dB

17.3

17.4

17.4

S11

dB

-19

-19

-16

S22

dB

-22

-22

-21

P1dB

dBm

+22

OIP3

dBm

+41

Noise Figure

dB

2.0

2.1

2.2

Voltage

V

+5

Current

mA

140

0.7

0.75

0.8

0.85

0.9

Frequency (GHz)

Gain / Return Loss

14

15

16

17

18

19

-25

-20

-15

-10

-5

0

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

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

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

Noise Figure vs. Frequency

0

1

2

3

4

740

760

780

800

820

840

Frequency (MHz)

25 °C

50 °C

90 °C

ID=C1

C=100 pF

ID=C2

C=100 pF

ID=C3

C=100 pF

ID=C4

C=10000 pF

ID=C6

C=100 pF

ID=L1

L=33 nH

ID=R1

L=12 nH

ID=C5

R=10000 Ohm

ID=R6

R=360 Ohm

ID=R7

R=360 Ohm

1

2

NET="FH1"

+5V

Notes:

1.

Circuit Board Material: .0

#´ÃBr‡rxÃHG!9TTà …Ã2Ã#!à “Ãp‚ƒƒr…ÃÃUurÀhvÃ€vp…‚†‡…vƒÃyvrÃuh†ÃhÃyvrÃv€ƒrqhprÂsÃ$à 

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.