19/22

ASB Inc.

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

August 2011

ASL563

High Gain, Low Noise Amplifier

1) Total gain is sum of the 1st stage and 2nd stage amplifiers (not include filter loss).

2) NF is that of the 1st stage amplifier.

3) S11 is that of the 1st stage amplifier and S22 is that of the 2nd stage amplifier.

4) OIP3 is that of the 2nd stage amplifier measured with two tones at an output power of +0 dBm/tone separated by 1MHz.

5) Total current is the sum of the 1st stage and the 2nd stage amplifiers.

Top

Bottom

C1=1.2 pF

C5=1.2 pF

VDD2

RF OUT1

RF OUT2

ASL563

L1=5.1 nH

C3=10 nF

C6=68 pF

RF IN1

RF IN2

L2=5.6 nH

C4=68 pF

C7=10 nF

L3=4.7 nH

L4=5.6 nH

R4=1.1

k

W

R5=8.2 k

W

R2=1.2

k

W

R1=9.1 k

W

C8=1

mF

C2=1

mF

R3=51

W

R6=27

W

VDD1

BPF

Parameter

Symbol

Test Conditions

MIN.

TYP.

MAX.

Unit

Power Gain

1)

F = 1.575 GHz

24

25

dB

Noise Figure

2)

NF

F = 1.575 GHz

1.1

1.3

dB

Input Return Loss

3)

F = 1.575 GHz

-15

dB

Output Return Loss

3)

F = 1.575 GHz

-15

dB

1 dB Gain Compression

Output Power

F = 1.575 GHz

8

10

dBm

3

Output Power

4)

OIP3

F = 1.575 GHz

17

19

dBm

Circuit Current

5)

F = 1.575 GHz,

Non-RF

7.7

mA

Schematic (without the stripline at the Pin 1 and 2)

1st stage S-parameters & Noise Figure

GPS

1575 MHz

+3 V

Board Layout (FR4, 19.4x17.4 mm

APPLICATION CIRCUIT

(TYPE 2)

Without strip lines

S11

S22

freq (1.400GHz to 1.800GHz)

1400

1450

1500

1550

1600

1650

1700

1750

1800

-30

-20

-10

0

10

20

30

S12

S22

S11

S21

Frequency [MHz]

0

500

1000

1500

2000

2500

3000

3500

0

1

2

3

4

5

Frequency (MHz)

1400

1450

1500

1550

1600

1650

1700

1750

1800

0.5

0.6

0.7

0.8

0.9

1.0

1.1

1.2

1.3

1.4

1.5

Frequency (MHz)