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TriQuint Semiconductor, Inc

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Page 6 of 15 May 2009

AP561

0.7-2.9 GHz WiMAX 8W Power Amplifier

1930-1990 MHz Reference Design

Typical W-CDMA Performance at 25

°C

Frequency (MHz)

1930 1960 1990 Units

Channel Power

+28

+28

+28

dBm

Power Gain

15.3 15.4

15.3

dB

Input Return Loss

12

16

18

dB

Output Return Loss

7.7

7.6

7.5

dB

ACLR

-49

-49

-51

dBc

Operating Current, Icc 440

430

425

mA

Collector Efficiency 11.7

12

12.3

%

Output P1dB

39.1 38.7

38.2

dBm

Quiescent Current, Icq

300

mA

Vpd

+5

V

Vcc

+12

V

Notes:

1.

The primary RF microstrip line is 50

Ω.

2.

Do not exceed 5.5V on Vpd or damage to D1 will occur.

3.

Do not exceed 13V on Vcc or damage to D2 will occur.

4.

Components shown on the silkscreen but not on the schematic are not used.

5.

6.

7.

8.

9.

The edge of C30 is placed next to the edge of C31

11. 0

Ω jumpers can be replaced with copper trace in target application.

1930-1990 MHz Application Circuit Performance Plots

W-CDMA 3GPP Test Model 1+64 DPCH, 100% clipping, PAR = 10.2 dB @ 0.01% Probability, 3.84 MHz BW

Gain vs. Frequency

T=25°C

14

15

16

17

18

1.92

1.94

1.96

1.98

2.00

Frequency (GHz)

Return Loss

T=25°C

-30

-25

-20

-15

-10

-5

0

1.92

1.94

1.96

1.98

2.00

Frequency (GHz)

S11

S22

Efficiency vs Output Average Power vs. Frequency

T=25°C

5

10

15

20

25

24

25

26

27

28

29

30

31

32

Output Power (dBm)

1930 MHz

1960 MHz

1990 MHz

Current vs Output Average Power vs. Frequency

T=25°C

300

400

500

600

700

800

24

25

26

27

28

29

30

31

32

Output Power (dBm)

1930 MHz

1960 MHz

1990 MHz

ACLR vs. Output Average Power vs. Frequency

T=25°C

-60

-55

-50

-45

-40

-35

-30

24

25

26

27

28

29

30

31

32

Output Power (dBm)

1930 MHz

1960 MHz

1990 MHz