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ASB Inc.

· sales@asb.co.kr · Tel: +82-42-528-7223

July 2010

AST163

High Gain, Low Noise Amplifier

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

Schematic

S-parameters & K-factor

APPLICATION CIRCUIT

Board Layout (FR4, 23x13 mm

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: 0.4 mm, Width: 0.3 mm

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

Bottom

Parameter

Symbol

Unit

Frequency [MHz]

1710~1880

Power Gain

dB

17.5

Noise Figure

NF

dB

0.65

Input Return Loss

dB

-10

Output Return Loss

dB

-8

1 dB Gain Compression

Output Power

dBm

16.5

3

Output Power

1)

OIP3

dBm

28

Circuit Current

mA

35

Top

1710 ~ 1880 MHz

+5 V / 35 mA

C1=100 pF

C2=100 pF

RF OUT

AST163

C3=10 nF

RF IN

L2=8.2 nH

*P1

R1=750

W

C4=1 uF

*P1

VDD

R2=5.1 k

W

L1=4.7 nH

R3=30

W

1500

1600

1700

1800

1900

2000

2100

0

5

10

15

20

25

Frequency (MHz)

1500

1600

1700

1800

1900

2000

2100

-20

-15

-10

-5

0

Frequency (MHz)

1500

1600

1700

1800

1900

2000

2100

-20

-15

-10

-5

0

Frequency (MHz)

0

500

1000

1500

2000

2500

3000

3500

0

1

2

3

4

5

Frequency (MHz)