WJ Communications, Inc. • Phone: 1-800-WJ1-4401 • FAX: 408-577-6620 • e-mail: sales@wj.com • Web site: www.wj.com

April 2002

AH22

Push-Pull Circuit: 50-860 MHz

Performance Charts

Typical Performance (75 Ohm System)

Frequency

50 MHz

450 MHz

750 MHz 860 MHz

Magnitude S21

11.7 dB

11.7 dB

11.4 dB

11.3 dB

Magnitude S11

-11.0 dB

-12.3 dB

-11.7 dB

-15.6 dB

Magnitude S22

-13.2 dB

-11.9 dB

-11.4 dB

-12.3 dB

OIP2

72.0 dBm

70 dBm

72 dBm

70 dBm

OIP3

42.0 dBm

43 dBm

41 dBm

40 dBm

Bias

Vds = 5 V, Id = 300 mA

FR4 Board Layout (T = 28 Mils to ground plane)

Schematic

RF OUT

DC +5 V

DC +5 V

RF IN

C = 1.5 pF

C = 100 pF

C = 1000 pF

C = 1000 pF

C = 100 pF

C = 1.5 pF

R = 560

R = 560

L = 470 nH

L = 470 nH

L = 5.6 nH

L = 5.6 nH

4 or more Via

Grounds req.

6 turns bifilar

wire around

ferrite core

6 turns bifilar

wire around

ferrite core

Or

MaCOM

ETCI-1-13

SMT balun

Core: TDK H5C2-T3.1-1.3-1.3

Wire: MWS B2383211

Interior Trans. Lines Z = 37.5 Ohm

1008 Package

L = 5.6 nH

0603 Package

R = 560 ohm

0603 Package

C = 1000 pF

0603 Package

C = 1000 pF

0603 Package

C = 100 pF

0603 Package

C = 100 pF

0603 Package

R = 560 ohm

1008 Package

L = 5.6 nH

0402 Package

C = 1.5 pF

0603 Package

C = 1000 pF

0603 Package

C = 1000 pF

L = 470 nH

Coilcraft

1008 Package

L = 470 nH

Coilcraft

1008 Package

+5 V

+5 V

AH22

CSO

-63 dBc

750 MHz

110 channels

+40 dBmV/ch, Flat

CTB

-61 dBc

750 MHz

110 channels

+40 dBmV/ch, Flat

XMOD

-61 dBc

750 MHz

110 channels

+40 dBmV/ch, Flat

Multi-channel Measurements

AH22

Note: Balun and board losses have not been extracted but typically account for 0.4 dB loss midband and 1.1 dB loss at 860 MHz.

Frequency (MHz)

0

100 200

300 400 500

600

700 800

900 1000

S-Parameters

15

10

5

0

-5

-10

-20

-15

S21

S11

S22

Frequency (MHz)

0

100 200

300 400 500

600 700 800

900 1000

Linearity vs. Frequency

80

70

60

40

50

30

10

20

0

V = 5 V

I = 290 mA

OIP3

OIP2