Tiny RF chip antennas are no longer relegated to PCB "keep out" area, allowing product designers to further miniaturize wireless biosensors and medical wearables Traditionally, small chip antennas used in RF-enabled medical devices have required a designated ground "keep out" area to minimize interference from other components and ensure the ideal radiation pattern for wireless signals. In some cases, this reserved space can eat up as much as 15 × 20mm of the printed circuit board. However, with the drive to further miniaturize next generation medical biosensors and wearables, new alternatives are entering the market that allow the chip antenna to be mounted directly above metal surfaces. By doing so, as much as 10-20% of the space traditionally reserved for the keep out area is no longer required, allowing designers to reduce the overall size of the product.
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