Power control schemes for reader devices

Abstract

In some examples of the techniques described herein, power control schemes between an interrogator mode and a tag response mode of a reader device may be separated to operate at different power amplifier bias points, which may reduce battery power consumption. In some examples, automatic power control in a physical layer may be implemented to achieve a target range at a reduced battery power consumption. In some approaches, tuning may start at a relatively high (e.g., maximum) transmit power and is gradually converged to a lower power level based on a received signal strength indicator (RSSI) through a binary search or similar procedure to determine the power level. In some of the approaches described herein, tuning may begin at a lower (e.g., median) transmit power level, and may avoid the higher transmit power scenario, which may reduce or avoid heavy battery loading.

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