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ASB Inc.

 sales@asb.co.kr  Tel: +82-42-528-7225

April 2017

AST54S

High Gain, Low Noise Amplifier

C1=100 pF

C2=100 pF

RF OUT

AST54S

C4=1 nF

RF IN

L2=8.2 nH

*P1

R1=820



C5=1 uF

*P1

VDD

R2=5.1 k



L1=6.8 nH

R3=43



C3=0.75 pF

1000

1200

1400

1600

1800

0

5

10

15

20

25

Frequency (MHz)

1000

1200

1400

1600

1800

-30

-25

-20

-15

-10

-5

0

Frequency (MHz)

1000

1200

1400

1600

1800

-35

-30

-25

-20

-15

-10

-5

0

Frequency (MHz)

0

1000

2000

3000

4000

5000

6000

7000

8000

9000

0

1

2

3

4

5

6

7

8

9

10

Frequency [MHz]

1) OIP3 is measured with two tones at an output power of +0 dBm/tone separated by 1MHz.

Parameter

Symbol

Unit

Frequency (MHz)

1164 ~ 1300

1559 ~ 1620

Power Gain

dB

17.4

15.2

Noise Figure

NF

dB

0.45

0.45

Input Return Loss

dB

-12

-10

Output Return Loss

dB

-18

-18

1 dB Gain Compression

Output Power

dBm

17

18

OIP3

dBm

30

32

Circuit Current

mA

40

40

Schematic

S-parameters & K-factor

APPLICATION CIRCUIT

Note: 1) The length of the strip line P1 is given as below at

the PCB with Er = 4.5 and T = 0.8 mm.

P1 Length: 1 mm, Width: 0.3 mm

2) Gain and S11 are in trade-off and varied with the length of P1

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GPS,GLONASS,Galileo,Compass

1164 ~ 1620 MHz

+5 V, 40 mA