W3126 Datasheet, PDF (2/4 Pages) Pulse A Technitrol Company – ISM 315MHz Helical Antenna

W3126 Datasheet version 1.0 ISM 315MHz Helical Antenna. (05/14)
ISM 315MHz Helical Antenna
Ground cleared under antenna, clearance area 8.50 x 40.00 mm. Pulse Part Number: W3126
Terminal Configuration
PWB Layout
Feed contact
Tuning component
(fine tuning)
Tuning component
(raw tuning)
Feed contact
Matching component
Tuning component
(fine tuning)
Tuning component
(raw tuning)
Matching component
Ground Clearance Area (8.50 x 40.00 mm)
all metallization should be removed from
all PWB layers
Feed line 50 Ω
Ground Clearance Area (8.50 x 40.00 mm)
all metallization should be removed from
all PWB layers _{Ground via hole}
Feed line 50 Ω
Ground via hole
40 mm
40 mm
Terminal Configuration and Antenna Dimensions
4.00
Helix
Antenna feed
point (under
the antenna)
Inductor for
frequency fine
tuning, i_An_nt_th_eis_nn
case 0 o_ph_om_{int (u}
jumper,_thse_er_aie_ns_te
InductoIrnfdour cto
frequenfcryeqrouuegn
tuning, 3tu3nninHg,
series case 0 o
jumper,
Inductor for
S11 ma_It_nc_dh_uin_cg_to,
10nH, s_fh_reu_qn_ut _en
tuning,
series
Inducto
S11 ma
10nH, s
Helix
4.00
ø 5.00
35.35
1
2
Antenna Features
1
No. Terminal
Name
35.35
2
Terminal
Dimensions
1
Feed
Wire diameter
terminal
0.8mm
2 Support Diameter 2.5mm,
length 2.6mm
ø _2.50
ø _2.50
4.15
Scale 3:1
Scale 3:1
ø _7.00
ø 5.00
ø _2.50
ø _7.00
ø _2.50
25.00
Matching circuit needs to placed on PCB close to antenna feed terminal.
Matching component values depend on device construction; s₄i_.z₁e₅, surrounding mechan₂ic₅s_.0, m₀ aterials etc..
Pulse Finland Oy
Takatie 6
90440 Kempele, Finland
Tel: [phone]
Fax: [phone]
www.pulseeng.com/antennas
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