SPE-18-8-066/B/AH Page 1 of 16
Specification
Part No.
:
SDDCP.5900.25.10.A.08
Product Name
:
Embedded 25*25*10.15mm Stacked SDARS &
DSRC Patch Antenna for OEM Automotive
Applications
Feature
:
High Efficiency and Gain
SDARS: LHCP 80.3% Efficiency, +5.4 dBi Gain
@2332.5 MHz
DSRC: RHCP 68.5% Efficiency, +3.5dBi Gain
@5900 MHz
Dual Feed Patch Assembly
Tuned for Centre Positioning on 70*70mm Ground
Plane Through–Hole Mounting Pin Type
IATF 16949
RoHS Compliant
SPE-18-8-066/B/AH Page 2 of 16
1. Introduction
The SDDCP.5900.25.10.A.08 is a passive embedded ceramic stacked patch antenna
with both SDARS and DSRC capabilities. Using a stacked dual patch assembly for both
bands results in the most economical and space-efficient solution for demanding
applications requiring both SDARS and DSRC. The patch assembly is easy to integrate
with an overall footprint size of just 25x25mm and sits at 10.15mm in height.
The SDARS patch at 25mm*25mm is designed for use with Satellite Digital Audio
Radio Services (SDARS). It features left-hand circular polarization, low in-band axial
ratio, and excellent gain characteristics in the 2320 to 2345 MHz band, making it
compatible with the most popular satellite radio services available in many new
vehicles. It is extremely efficient with up to 80% efficiency at 2332.5MHz.
The DSRC patch at 12mm*12mm is used as the communications medium of choice
for active safety V2V/V2X (Vehicle-to-Vehicle and Vehicle-to-Other) systems.
Primarily allocated for vehicle safety applications, DSRC supports high-speed, low-
latency, short-range, V2V/V2X wireless communications. The DSRC patch also has
left hand circular polarization and nearly 70% efficiency at 5900MHz.
A typical use case would include utilizing the stacked patch in shark fin style external
automotive roof mounted antennas.
This antenna has been tuned and tested on a 70 x 70 mm ground plane. Custom
tuning services can be provided for further optimization to customer-specific device
environments. Note that certification of your device and/or the antenna may be
required by certain Satellite Radio providers. Further engineering may be needed to
meet their requirements. Contact your regional Taoglas sales office for support.