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  • 2014. All Rights Reserved.

    Pulse Finland OyTakatie 690440 Kempele, FinlandTel: +358 207 935 500Fax: +358 207 935 501www.pulseeng.com/antennas

    W3127 Datasheet version 1.2. ISM 433MHz Helical Antenna. (5/14).

    ISM 433MHz Helical AntennaGround cleared under antenna, clearance area 8.50x40.00 mm. Pulse Part Number: W3127

    Features - Plastic supported helical antenna- Size (helix): Length 35.35mm, 7mm- Low weight (1.8g)- Mounting on top of the PWB- Through hole mechanical support pegs- Feed contact by soldering via PWB hole- Tray packing- RoHS Compliant Product

    Applications - Remote controls, toys etc.- 433MHz ISM Band Systems

    Electrical specifications @ +25 CNote: Electrical characteristics depend on test board (GP) size and antenna positioning on GP and Ground Clearance area size.

    ISM 433MHzTypical performance (test board size 100x40 mm, PWB ground clearance area 8.50 x40.00 mm), tuning and matching circuit: tuning 12nH series, matching 6.8nH shunt for Pulse standard evaluation board.

    Frequency Range[MHz]

    433 435

    Max Gain[dBi]

    -2.9

    Return lossmin. [dB]

    -15

    Impedance[]

    50

    OperatingTemperature [C]

    -40 to +85

  • 2014. All Rights Reserved.

    Pulse Finland OyTakatie 690440 Kempele, FinlandTel: +358 207 935 500Fax: +358 207 935 501www.pulseeng.com/antennas

    W3127 Datasheet version 1.2. ISM 433MHz Helical Antenna. (5/14).

    ISM 433MHz Helical AntennaGround 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

    Ground via hole

    Ground Clearance Area (8.50 x 40.00 mm)all metallization should be removed from all PWB layers

    40 mm

    100

    mm

    2.50

    2.50

    25.004.15

    4.00

    7.00

    5.00

    9.60

    9.90

    7.30

    35.35

    Helix

    21 Scale 3:1

    0 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

    Ground via hole

    Ground Clearance Area (8.50 x 40.00 mm)all metallization should be removed from all PWB layers

    40 mm

    100

    mm

    2.50

    2.50

    25.004.15

    4.00

    7.00

    5.00

    9.60

    9.90

    7.30

    35.35

    Helix

    21 Scale 3:1

    0 12 nH

    6.8 nH

    Antenna Features

    No. Terminal Name

    Terminal Dimensions

    1 Feed terminal

    Wire diameter 0.8mm

    2 Support Diameter 2.5mm, length 2.6mm

    Matching circuit needs to placed on PCB close to antenna feed terminal. Matching component values depend on device construction; size, surrounding mechanics, materials etc..

  • 2014. All Rights Reserved.

    Pulse Finland OyTakatie 690440 Kempele, FinlandTel: +358 207 935 500Fax: +358 207 935 501www.pulseeng.com/antennas

    W3127 Datasheet version 1.2. ISM 433MHz Helical Antenna. (5/14).

    ISM 433MHz Helical AntennaGround cleared under antenna, clearance area 8.50x40.00 mm. Pulse Part Number: W3127

    Typical Electrical Characteristics (T=25 C)Typical Return Loss S11/ impedance, Measured on the 100x40mm test board with tuning and matching circuit

    Free space maximum gain, PWB ground clearance area 8.50 x 40.00 mm

    Feed contact

    Tuning component(fine tuning)

    Tuning component(raw tuning)

    Matching component

    Feed line 50

    Ground via hole

    Ground Clearance Area (8.50 x 40.00 mm)all metallization should be removed from all PWB layers

    40 mm

    100

    mm

    2.50

    2.50

    25.004.15

    4.00

    7.00

    5.00

    9.60

    9.90

    7.30

    35.35

    Helix

    21 Scale 3:1

    0 12 nH

    6.8 nH

    Max

    Gai

    n [d

    Bi]

    W3127 Max Gain

    Max Gain [dBi]

    Freq [MHz]

    0.00

    -1.00

    -2.00

    -3.00

    -4.00

    -5.00

    -6.00

    -7.00

    CENTER 434.000 000 MHz SPAN 50.000 000 MHz

    Cor

    PRmDel

    CH1Markers1. -21.132 dB 433 MHz2. -32.939 dB 434 MHz3. -21.458 dB 435 MHz

    3 Jan 2008 14:56:23

    ISM 433MHz

    5 dB/REF 0 dBCH1 S11 log MAG

    CENTER 434.000 000 MHz SPAN 50.000 000 MHz

    PRmDel

    Cor

    3 Jan 2008 14:56:36

    ISM 433MHz

    CH1 S11 1 U FS

    1. 54.908 7.666 433 MHz2. 51.811 -777.34 m 471.76 pF 434.000 000 MHz3. 46.588 -7.293 435 MHz

    0 Ohm

    6.8 nH

    2

    31

    2

    3

    1428 430 432 434 436 438 440

    Max

    Gai

    n [d

    Bi]

    W3127 Max Gain

    Max Gain [dBi]

    Freq [MHz]

    0.00

    -1.00

    -2.00

    -3.00

    -4.00

    -5.00

    -6.00

    -7.00

    CENTER 434.000 000 MHz SPAN 50.000 000 MHz

    Cor

    PRmDel

    CH1Markers1. -21.132 dB 433 MHz2. -32.939 dB 434 MHz3. -21.458 dB 435 MHz

    3 Jan 2008 14:56:23

    ISM 433MHz

    5 dB/REF 0 dBCH1 S11 log MAG

    CENTER 434.000 000 MHz SPAN 50.000 000 MHz

    PRmDel

    Cor

    3 Jan 2008 14:56:36

    ISM 433MHz

    CH1 S11 1 U FS

    1. 54.908 7.666 433 MHz2. 51.811 -777.34 m 471.76 pF 434.000 000 MHz3. 46.588 -7.293 435 MHz

    0 Ohm

    6.8 nH

    2

    31

    2

    3

    1428 430 432 434 436 438 440

    Max

    Gai

    n [d

    Bi]

    W3127 Max Gain

    Max Gain [dBi]

    Freq [MHz]

    0.00

    -1.00

    -2.00

    -3.00

    -4.00

    -5.00

    -6.00

    -7.00

    CENTER 434.000 000 MHz SPAN 50.000 000 MHz

    Cor

    PRmDel

    CH1Markers1. -21.132 dB 433 MHz2. -32.939 dB 434 MHz3. -21.458 dB 435 MHz

    3 Jan 2008 14:56:23

    ISM 433MHz

    5 dB/REF 0 dBCH1 S11 log MAG

    CENTER 434.000 000 MHz SPAN 50.000 000 MHz

    PRmDel

    Cor

    3 Jan 2008 14:56:36

    ISM 433MHz

    CH1 S11 1 U FS

    1. 54.908 7.666 433 MHz2. 51.811 -777.34 m 471.76 pF 434.000 000 MHz3. 46.588 -7.293 435 MHz

    0 Ohm

    6.8 nH

    2

    31

    2

    3

    1428 430 432 434 436 438 440

  • 2014. All Rights Reserved.

    Pulse Finland OyTakatie 690440 Kempele, FinlandTel: +358 207 935 500Fax: +358 207 935 501www.pulseeng.com/antennas

    W3127 Datasheet version 1.2. ISM 433MHz Helical Antenna. (5/14).

    ISM 433MHz Helical AntennaGround cleared under antenna, clearance area 8.50x40.00 mm. Pulse Part Number: W3127

    XZ-PLANE

    Typical Free space Radiation Patterns

    ZY-PLANE

    XY-PLANE