AST20S datasheet(28/41 Pages) ASB

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ASB Inc.

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

February 2017

AST20S

High Gain, Low Noise Amplifier

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

2) TYP

1) : R2 = 8.2KΩ, TYP2) : R2 = 5.1KΩ

500

1000

1500

2000

2500

3000

3500

Frequency (MHz)

1000

1100

1200

1300

1400

1500

1600

1700

1800

1900

2000

-40

-30

-20

-10

S12

S22

S11

S21

Frequency (MHz)

Parameter

Symbol

Test Conditions

TYP1).

TYP2).

Unit

Power Gain

F = 1472 GHz

15.0

15.5

Noise Figure

F = 1472 GHz

0.45

0.5

Input Return Loss

RLin

F = 1472 GHz

-10

Output Return Loss

RLout

F = 1472 GHz

-13

-15

Gain

Compression

Output Power

Po(1dB)

F = 1472 GHz

dBm

3rd Intercept Point

Output Power1)

OIP3

F = 1472 GHz

29.5

32.0

dBm

Circuit Current

F = 1472 GHz

Non-RF

Schematic

S-parameters & K-factor

APPLICATION CIRCUIT

GPS

1472 MHz

+5V

Board Layout (FR4, 23x13 mm2, 0.8T)

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: 2.5 mm, Width: 0.3 mm

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

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