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Integrating multiple antennas into vehicle OBD and telematics

Antenova Ltd has built a model design for On Board Devices (OBD) and vehicle telematics. The OBD design is said to use three antennas inside an OBD housing to link to a satellite (GNSS), Bluetooth and a terrestrial network, whilst obtaining optimum performance from all three antennas simultaneously. The design also features a small GNSS RF module to fix location.

The latest antennas from Antenova’s product ranges are used in the OBD design including the Armata 3G FPC antenna for penta-band frequencies which operates at 824 to 960MHz and 1710 to 2170MHz, Bentoni - a GNSS antenna - operating at 1559 to 1609MHz, and the Weii PCB-mounted antenna which provides a Bluetooth connection at 2.4GHz.

The M10578 GPS/GNSS module is a complete receiver that provides location tracking for OBDs. It features the latest MediaTek chipset with an additional LNA to give added performance when mounted under dashboards and out of line of sight with the sky.

“We are demonstrating how a design for an OBD can give great performance, even when new antennas are added to an existing design,” explained Colin Newman, Antenova’s managing director. “OBD devices are growing fast in popularity, and the design of the RF components is critical to the overall performance of a device. In particular, Antenova’s engineers have invested many years in designing antennas that work effectively in very small spaces, whilst maintaining the efficiency of the antenna.”

Author
Tom Austin-Morgan

Source:  www.newelectronics.co.uk