Specifications and information are subject to change without notice

WJ Communications, Inc • Phone 1-800-WJ1-4401 • FAX: 408-577-6621 • e-mail: sales@wj.com • Web site: www.wj.com

Page 6 of 9 May 2007

AH202

1W High Linearity Amplifier

Reference Design: 1900 MHz

using the AH202 in the previously recommended circuit configuration with the AH201 (AH201-PCB1900)

Typical RF Performance at 25°°C

Frequency

1900 MHz

S21 - Gain

15 dB

S11

- 8 dB

S22

- 8 dB

Output P1dB

+ 29.7 dBm

Output IP3

+ 46 dBm

IS-95A Ch. Power

@ -45 dBc ACPR

+ 23 dBm

Noise Figure

3.8 dB

Supply Voltage

+11 V

Supply Current

330 mA

CAP

ID=C2

C=56 pF

CAP

ID=C3

C=56 pF

CAP

ID=C6

C=0.5 pF

CAP

ID=C4 (0805)

C=1000 pF

CAP

ID=C5 (1206)

C=1e5 pF

IND

ID=L1 (1008)

L=22 nH

CAP

ID=C7

C=1.0 pF

TLIN

ID=TL1

Z0=50 Ohm

EL=31 Deg

F0=1900 MHz

CAP

ID=C1

C=56 pF

RES

ID=L2

R=0 Ohm

SUBCKT

ID=S1

NET="AH202_F"

PORT

P=1

Z=50 Ohm

PORT

P=2

Z=50 Ohm

+11V

Notes:

1.

The amplifier should be connected directly to a +11 V regulator; no dropping resistor is required.

2.

If no DC signal is present at the input (pin 1), C1 can be removed. The gate (input pin) is internally grounded in the amplifier.

3.

Component sizes are 0603 unless otherwise noted. RF choke L1 should be wirewound ceramic type to insure sufficient current carrying

capacity. Coilcraft’s 1008 CS series (part # 1008CS-220X_B) is recommended.

4.

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the performance.

5.

C6 is located at silk screen marker “C” and C8 is located between silk screen markers “6” and “7” on the WJ evaluation board.

S-Parameters

Vd = +11.0V, Temp = +25C

12

13

14

15

16

1700

1800

1900

2000

Frequency (MHz)

-20

-15

-10

-5

0

S21

S11

S22

Noise Figure

Vd = 11.0V, Temp = 25°C

0

1

2

3

4

5

6

1700

1800

1900

2000

Frequency (MHz)

OIP3 vs. Pout

Vd = +11V, Temp = 25°C

35

40

45

50

55

5

7

9

11

13

15

17

Pout (dBm)

ACPR vs. Channel Power

1900 MHz., IS-95 Ch. Fwd, ± 885 KHz offset, 30 KHz Meas. BW

-75

-70

-65

-60

-55

-50

-45

-40

14

16

18

20

22

24

Output Channel Power (dBm)