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 3 of 6 March 2005

The Communications Edge

TM

AH103A

High Gain, High Linearity ½-Watt Amplifier

Product Information

Application Circuit: 700 – 1000 MHz (AH103AG-PCB900)

Typical RF Performance at 25

°C

Frequency

900 MHz

Gain

29.1 dB

Input Return Loss

20 dB

Output Return Loss

19 dB

Output IP3

+46 dBm

Output P1dB

+27 dBm

IS-95A Ch. Power

@ -45 dBc ACPR

+20.7 dBm

Noise Figure

2.5 dB

Supply Voltage

+9

Supply Current

275 mA

Notes:

1.

A voltage regulator is used in this circuit (U2) to drop the +9 V to a +5 V usable supply for the first internal amplifier. It is permissible to remove the

regulator and operate the 1

requires a dropping resistor of 6.8

Ω. A +4.5 V supply can also be used to bypass the 6.8 Ω and can be applied to Test Point 2 (TP2).

S-Parameters

26

27

28

29

30

31

700

750

800

850

900

950

1000

Frequency (MHz)

-25

-20

-15

-10

-5

0

S21

S11

S22

Wideband S-Parameters

-30

-20

-10

0

10

20

30

0

500

1000

1500

2000

2500

3000

Frequency (MHz)

S21

S11

S22

Noise Figure

0

1

2

3

4

5

700

750

800

850

900

950

1000

Frequency (MHz)

Output IP3

38

40

42

44

46

48

6

8

10

12

14

16

Outpu Power per tone (dBm)

ACPR vs. Channel Power

IS-95, 9 Ch. Fwd, ±885 kHz offset, 30 kHz Meas BW, 900 MHz

-80

-70

-60

-50

-40

14

16

18

20

22

Output Channel Power (dBm)