Specifications and information are subject to change without notice

TriQuint Semiconductor, Inc

• Phone 1-800-951-4401 • FAX: 408-577-6633 • e-mail: info-sales@tqs.com • Web site: www.TriQuint.com

Page 4 of 15 May 2009

AP561

0.7-2.9 GHz WiMAX 8W Power Amplifier

776-787 MHz Reference Design

Typical O-FDMA Performance at 25

°C

Frequency (MHz)

776

780

787 Units

Channel Power

+28

+28

+28

dBm

Power Gain

16.5 16.6

16.6

dB

Input Return Loss

10

12

13

dB

Output Return Loss

11

11

11

dB

EVM

0.68 0.64

0.57

%

ACLR

-51

-51

-52

dBc

Operating Current, Icc 405

404

402

mA

Collector Efficiency

13

13

12.9

%

Output P1dB

37.8 37.9

38

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.

The edge of C27 is placed next to the edge of L1.

8.

9.

12. 0

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

776-787 MHz Application Circuit Performance Plots

802.16-2004 O-FDMA, 64QAM-1/2, 1024-FFT, 20 symbols and 30 subchannels. 9.5 dB PAR @ 0.01%, 5 MHz Carrier BW

Gain vs. Frequency

T=25°C

14

15

16

17

18

0.75

0.77

0.79

0.81

0.83

0.85

Frequency (GHz)

Return Loss

T=25°C

-20

-15

-10

-5

0

0.75

0.77

0.79

0.81

0.83

0.85

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)

776 MHz

780 MHz

787 MHz

Current vs Output Average Power vs. Frequency

T=25°C

300

350

400

450

500

550

600

24

25

26

27

28

29

30

31

32

Output Power (dBm)

776 MHz

780 MHz

787 MHz

EVM vs. Output Average Power vs. Frequency

T=25°C

0

1

2

3

4

5

24

25

26

27

28

29

30

31

32

Output Power (dBm)

776 MHz

780 MHz

787 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)

776 MHz

780 MHz

787 MHz

W-CDMA 3GPP Test

Model 1+64 DPCH,

100% clipping,

PAR = 10.2 dB @ 0.01%,

3.84 MHz BW