-
© 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, ø 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[Ω]
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 Ω
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
ø 2.50
ø 2.50
25.004.15
4.00
ø 7.00
ø 5.00
9.60
9.90
7.30
35.35
Helix
21 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
100
mm
ø 2.50
ø 2.50
25.004.15
4.00
ø 7.00
ø 5.00
9.60
9.90
7.30
35.35
Helix
21 Scale 3:1
0 Ω 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 Ω
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
ø 2.50
ø 2.50
25.004.15
4.00
ø 7.00
ø 5.00
9.60
9.90
7.30
35.35
Helix
21 Scale 3:1
0 Ω 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 Ω 7.666 Ω 433 MHz2. 51.811 Ω -777.34 mΩ 471.76 pF
434.000 000 MHz3. 46.588 Ω -7.293 Ω 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 Ω 7.666 Ω 433 MHz2. 51.811 Ω -777.34 mΩ 471.76 pF
434.000 000 MHz3. 46.588 Ω -7.293 Ω 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 Ω 7.666 Ω 433 MHz2. 51.811 Ω -777.34 mΩ 471.76 pF
434.000 000 MHz3. 46.588 Ω -7.293 Ω 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
