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 9 of 10 May 2007 ver 1

AP601

High Dynamic Range 1.8W 28V HBT Amplifier

2320-2380 MHz WiBro Application Circuit

Typical WCDMA Performance at 25

°C

at a channel power of +23 dBm

Frequency

2350 MHz

W-CDMA Channel Power

+23 dBm

Power Gain

14 dB

ACLR

-50 dBc

Operating Current, Icc

50 mA

Collector Efficiency

14 %

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 C3 is placed at 0.050” (5.1

° @ 2.35 GHz) from the edge of the AP601 (U1).

4. The center of C19 is placed at 0.650” (66.6

° @ 2.35 GHz) from the edge of the AP601 (U1).

5. The center of C30 is placed at 0.110” (11.3

° @ 2.35 GHz) from the center of C19.

6. The center of C31 is placed at 0.040” (4.1

° @ 2.35 GHz) from the center of C19.

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

2320-2380 MHz Application Circuit Performance Plots

Gain vs. Output Power vs. Frequency

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

10

11

12

13

14

15

22

24

26

28

30

32

34

Output Power (dBm)

2320 MHz

2350 MHz

2380 MHz

Efficiency vs. Output Power vs. Frequency

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

0

10

20

30

40

50

60

22

24

26

28

30

32

34

Output Power (dBm)

2320 MHz

2350 MHz

2380 MHz

ACLR1 vs. Output Power vs. Frequency

Vcc = 28V, Icq = 40 mA, 25 ˚C

-60

-55

-50

-45

-40

20

21

22

23

24

25

Average Output Power (dBm)

2320 MHz

2350 MHz

2380 MHz

WCDMA 3GPP TM 1+64DPCH,

60% clipping, PAR = 8.6 dB

EVM vs. Output Power

Vcc = 28V, Icq = 40 mA, 25 ˚C, 2350 MHz

0.0

0.5

1.0

1.5

2.0

2.5

3.0

20

21

22

23

24

25

Output Power (dBm)

WCDMA 3GPP TM 1+64DPCH,

60% clipping, PAR = 8.6 dB

Efficiency vs. Output Power vs. Frequency

WCDMA, Vcc = 28V, Icq = 40 mA, 25 ˚C

0

5

10

15

20

25

20

21

22

23

24

25

Average Output Power (dBm)

2320 MHz

2350 MHz

2380 MHz

WCDMA 3GPP TM 1+64DPCH,

60% clipping, PAR = 8.6 dB

C3

1.6pF

See note 3

C30

0.2pF

See note 5

C7

1000pF

C32

22pF

W = .030”

L = .590”

C31

1.1pF

See note 6

C19

0.6pF

See note 4

22pF

22pF

C33

C34

C31

C30

C19

C32 C33 C34