Personal Location Beacon

Personal Location Beacon

The Challenge

Personal Locator Beacons (PLBs) are personal safety devices for land or sea, best attached to your lifejacket or rucksack for alerting emergency services. PLBs transmit coded data bursts conforming to C/S T.001 specification.

To maximize the chance of detection our client wanted to create a product capable of transmitting on 3 different frequencies. Plextek’s challenge was to design the RF front end to accommodate triband operation, which had never previously been developed.

The Approach

Plextek designed the electronics with a particular focus on that RF front end development. This included the design of power amplifiers, antenna and antenna matching circuits. During the development stage, particular focus was paid to the power consumption requirements.

The Outcome

First Personal Location Beacon to have achieved a tri-band capability with stringent limitations on size, weight, power and cost. Plextek played a key role in helping the client to manage the electronics development whilst keeping to constraints such as battery life, cost and physical dimensions.

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