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 13 of 14 May 2007 ver 1

AP603

High Dynamic Range 7W 28V HBT Amplifier

2110-2170 MHz High Efficiency Reference Design

Targeted for Linearized Power Amplifiers

Typical WCDMA Performance at 25

°C

at a channel power of +32 dBm

Frequency

2140 MHz

W-CDMA Channel Power

+32 dBm

Power Gain

11.5 dB

Input Return Loss

20 dB

Output Return Loss

11 dB

ACLR

-34 dBc

Operating Current, Icc

170 mA

Collector Efficiency

32.5 %

Output P1dB

+38.5 dBm

Quiescent Current, Icq

40 mA

Vpd, Vbias

+5 V

Vcc

+28 V

Notes:

1. The primary RF microstrip line is 50

Ω.

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

3. The center of C22 is placed at 0.185” (17.3

° @ 2140 MHz) from the center of C1.

4. The center of C1 is placed at 0.875” (81.6

° @ 2140 MHz) from the center of C5.

5. The center of C5 is placed at 0.070” (6.5

° @ 2140 MHz) from the edge of the AP603 (U1).

6. The center of C28 is placed at 0.190” (17.7

° @ 2140 MHz) from the edge of the AP603 (U1).

7. The center of C29 is placed at 0.300” (28.0

° @ 2140 MHz) from the center of C28.

8. The bold-faced RF trace is for the DC bias feed. The stub’s length is approximately a ¼ λ.

2110-2170 MHz High Efficiency Application Circuit Performance Plots

DPD Correction vs ACLR vs. Output Power

WCDMA, 2140 MHz, Vcc = 28V, Icq = 40 mA, 25 ˚C

-70

-60

-50

-40

-30

22

24

26

28

30

32

Average Output Power (dBm)

Uncorrected, Upper / Lower

DPD Corrected, Upper / Lower

Single-carrier WCDMA TM 1+64 DPCH,

No Clipping, PAR = 9.5 dB @ 0.01% CCDF

DPD Correction vs ACLR vs. Output Power

WCDMA, 2140 MHz, Vcc = 28V, Icq = 40 mA, 25 ˚C

-70

-60

-50

-40

-30

22

24

26

28

30

32

Average Output Power (dBm)

Uncorrected, Upper / Lower

DPD Corrected, Upper / Lower

Single-carrier WCDMA TM 1+64 DPCH,

69% Clipping, PAR = 8.6 dB @ 0.01% CCDF

DPD Correction vs ACLR vs. Output Power

WCDMA, 2140 MHz, Vcc = 28V, Icq = 40 mA, 25 ˚C

-70

-60

-50

-40

-30

22

24

26

28

30

32

Average Output Power (dBm)

Uncorrected, Upper / Lower

DPD Corrected, Upper / Lower

Single-carrier WCDMA TM 1+64 DPCH,

33% Clipping, PAR = 6.6 dB @ 0.01% CCDF

Gain vs. Output Power

CW tone, 2140 MHz, Vcc = 28V, Icq = 40 mA, 25 ˚C

8

9

10

11

12

13

20

24

28

32

36

40

Output Power (dBm)

Icc vs. Output Power

2140 MHz, Vcc = 28V, Icq = 40 mA, 25 ˚C

60

80

100

120

140

160

180

22

24

26

28

30

32

Average Output Power (dBm)

Single-carrier WCDMA TM 1+64 DPCH,

69% Clipping, PAR = 8.6 dB @ 0.01% CCDF

Efficiency vs. Output Power

2140 MHz, Vcc = 28V, Icq = 40 mA, 25 ˚C

0

10

20

30

40

22

24

26

28

30

32

Average Output Power (dBm)

Single-carrier WCDMA TM 1+64 DPCH,

69% Clipping, PAR = 8.6 dB @ 0.01% CCDF

0.8pF

See note 3

3.6 pF

See note 5

See note 4

W = 0.030”

L = 0.980”

C28

3.6 pF

See note 6

C29

0.4 pF

See note 7

2.3 kΩ

C21

C7

1000pF