ANT-403-SP DATA SHEET
Product Dimensions
403-SP
Description
The Splatch uses a grounded-line
technique to achieve outstanding
performance from a tiny surface-
mount element. This unique antenna
is designed for hand- or reflow-
mounting directly to a product’s circuit board. Its low cost makes
it ideal for volume applications. Unlike many compact antennas,
the Splatch exhibits good performance in proximity to objects and
persons. While suitable for a wide range of RF applications, the
403 version was designed to cover the 402–405 MHz medical
implant communication service (MICS) band.
1.10”
(27.94)
403-SP
0.54”
(13.7)
0.06”
(1.5)
0.20”
(5.1)
Features
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Very low cost
Ultra-compact package
Direct PCB attachment
Ideal for concealed / internal mounting
Perfect for compact portable devices
Suitable for hand- or reflow-assembly
Resistant to proximity effects
Recommended Footprint
0.20”
(5.1)
0.10”
(2.5)
0.08”
(2.0)
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Electrical Specifications
Center Freq.
Bandwidth
Wavelength
VSWR
Impedance
Connection
403MHz
5MHz
1/4-wave
<1.9 typ. at center
50 ohms
Surface-mount
Electrical specifications and plots measured on 1.50” x 3.30” reference ground plane
Ordering Information
•
ANT-403-SP (supplied in tubes of 20 pieces)
Recommended Mounting
VSWR Graph
S11 SWR
1= 402MHz 2= 403MHz 3= 405MHz
2: 1.353
916-SP
No ground plane or traces
under the antenna
PCB pads for the Splatch
Vias to ground plane
Ground plane on bottom
layer for counterpoise
50-ohm microstrip line
2
CENTER 403.000MHz
1
3
SPAN
100.000MHz
1
1
GROUNDED LINE PLANAR ANTENNA
Typical VSWR
Antenna Factor
159 Ort Lane Merlin, OR 97532
www.antennafactor.com
541-956-0931 (phone) 541-471-6251 (fax)
Rev 11-10-08
