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 10 May 2007 ver 1

AP601

High Dynamic Range 1.8W 28V HBT Amplifier

2110-2170 MHz Application Circuit (AP601-PCB2140)

Typical WCDMA Performance at 25

°C

at a channel power of +24 dBm

Frequency

2140 MHz

W-CDMA Channel Power

+24 dBm

Power Gain

13.5 dB

Input Return Loss

12 dB

Output Return Loss

8 dB

ACLR

-51 dBc

IMD3 @ +24 dBm PEP

-55 dBc

Operating Current, Icc

52 mA

Collector Efficiency

17 %

Output P1dB

+32.5 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 0.090” (8.4

° @ 2140 MHz) from the center of C1.

4. The center of C1 is placed at 0.910” (84.9

° @ 2140 MHz) from the center of C5.

5. The center of C5 is placed at 0.100” (9.3

° @ 2140 MHz) from the edge of the AP601 (U1).

6. The center of C19 is placed at 0.760” (70.9

° @ 2140 MHz) from the edge of the AP601 (U1).

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

2110-2170 MHz Application Circuit Performance Plots

W-CDMA 3GPP Test Model 1+64 DPCH, 60% clipping, PAR = 8.6 dB @ 0.01% Probability, 3.84 MHz BW

Gain vs. Output Power vs. Frequency

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

9

10

11

12

13

14

22

24

26

28

30

32

Output Power (dBm)

2110 MHz

2140 MHz

2170 MHz

S11, S22 vs. Frequency

Vcc = 28V, Icq = 40 mA, 25 ˚C

-25

-20

-15

-10

-5

0

2

2.05

2.1

2.15

2.2

2.25

2.3

Frequency (GHz)

S11

S22

Efficiency vs. Output Power vs. Frequency

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

0

10

20

30

40

50

12

16

20

24

28

32

Output Power (dBm)

2110 MHz

2140 MHz

2170 MHz

ACLR1 vs. Output Power vs. Frequency

WCDMA, Vcc = 28V, Icq = 40 mA, 25 ˚C

-60

-55

-50

-45

-40

-35

16

18

20

22

24

26

Average Output Power (dBm)

2110 MHz

2140 MHz

2170 MHz

Icc vs. Output Power vs. Frequency

WCDMA, Vcc = 28V, Icq = 40 mA, 25 ˚C

40

45

50

55

60

65

16

18

20

22

24

26

Average Output Power (dBm)

2110 MHz

2140 MHz

2170 MHz

ACLR1 vs. Output Power vs. Vcc

WCDMA, Icq = 40 mA, 2140 MHz, 25 ˚C

-60

-55

-50

-45

-40

-35

16

18

20

22

24

26

Average Output Power (dBm)

26 V

28 V

30 V

32 V

Unconditionally stable circuit version of this application circuit is available for download off of the website at: http://www.wj.com

C19

1.8pF

See note 6

C5

2.4pF

See note 5

C22

1.2pF

See note 3

C7

1000pF

3,3pF

See note 4