During this project, we studied a fully integrated communication and payment processing chip to be used for 915MHz compliant toll road payment systems in North America.
The chip includes a 915MHz AM receiver as well as a RF-DAC based transmitter with high linearity output power control. The device includes internal matching network to allow for seamless integration with external antenna. Also included is a Brown Out detector and power down control to optimize battery life.
Application areas include toll road systems motorways, bridges, urban areas, ferries etc.
Based on 915MHz communication.
Battery operated in range 3.6 – 1.8 V
Ultra low power sleep current consumption ( < 5uA )
High input power dynamic range -23dBm to +10dBm.
Sensitivity control 0.1 dBc
Highly linearly RF-DAC based transmitter with output power control in the range -10dBm to 1 dBm.
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