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Pulse Finland Oy

Takatie 6

90440

Kempele, Finland

Tel: +358 207 935 500

Fax: +358 207 935 501

www.pulseeng.com/antennas

W3127 Datasheet version 1.2. ISM 433MHz Helical Antenna. (04/08).

ISM 433MHz Helical Antenna

Ground cleared under antenna, clearance area 8.50x40.00 mm. Pulse Part Number: W3127

Feed contact

Tuning component

(fine tuning)

Tuning component

(raw tuning)

Matching component

Feed line 50 Ω

Ground via hole

Ground Clearance Area (8.50 x 40.00 mm)

all metallization should be removed from

all PWB layers

40 mm

25.00

4.60

4.00

ø 5.00

35.35

Helix

2

1

Scale 3:1

0 Ω

12 nH

6.8 nH

Terminal Configuration

PWB Layout

Terminal Configuration and Antenna Dimensions

Feed contact

Tuning component

(fine tuning)

Tuning component

(raw tuning)

Matching component

Feed line 50 Ω

Ground via hole

Ground Clearance Area (8.50 x 40.00 mm)

all metallization should be removed from

all PWB layers

40 mm

25.00

4.60

4.00

ø 5.00

35.35

Helix

2

1

Scale 3:1

0 Ω

12 nH

6.8 nH

AntennaFeatures

No.

Terminal

Name

Terminal

Dimensions

1

Feed

terminal

Wirediameter

0.8mm

2

Support

Diameter2.5mm,

length2.6mm

MatchingcircuitneedstoplacedonPCBclosetoantennafeedterminal.

Matchingcomponentvaluesdependondeviceconstruction;size,surroundingmechanics,materialsetc..