–

Revised 1/3/2017

Recommended Footprint

Recommended Mounting

No ground plane or traces

under the antenna

Ground plane on bottom

layer for counterpoise

50-ohm microstrip line

(0.21” minimum)

Vias to ground plane

PCB pads for the µSplatch

91.82 mm

(3.62”)

38.86 mm

(1.53”)

10.54 mm

(0.42”)

40.37 mm

(1.59”)

7.11 mm

(0.28”)

7.62 mm

(0.03”)

7.62 mm

(0.03”)

79.88 mm

(3.15”)

Product Description

The µSplatch™ 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 µSplatch™ exhibits good proximity

performance, making it an appropriate choice for

handheld applications such as remote controls,

pagers and alert devices.

Features

• 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

Electrical Specifications

Center Frequency:

403MHz

Recom. Freq. Range:

400 – 406MHz

Bandwidth:

6MHz

Wavelength:

¼-wave

VSWR:

≤ 2.0 typical at center

Peak Gain:

–8.7dBi

Impedance:

50-ohms

Connection:

Surface-mount

Oper. Temp. Range:

–40°C to +130°C

Electrical specifications and plots measured on 3.88 cm x 8.00

cm (1.53” x 3.15”) reference ground plane.

Ordering Information

ANT-403-USP (supplied in tubes of 63 pieces)

ANT-403-USP-T (Tape and reel of 1,000 pieces)

ANT-403-USP

Data Sheet

by

12.70 mm

(0.5")

2.62 mm

(0.103")

9.14 mm

(0.36")

5.1 mm

(0.20")

1.27 mm

(0.05")

2.03 mm

(0.08")

5.1 mm

(0.20")

2.54 mm

(0.10")

Please see AN-00502 for more details on PCB layout.