Design and implement of baseband circuits for a wireless automatic meter reading application

Automatic meter reading (AMR) technologies play an important role for smart grid. The architectures of physical layer and baseband circuits are proposed for a wireless AMR enterprise standard the most significant features of which are its coverage distance and power consumption potentially. All-digital baseband circuits for the wireless AMR application are designed and implemented in this paper. A novel Gaussian frequency-shift keying (GFSK) demodulator converting frequency offset in received signals to a DC component which is easy to be cancelled is also presented. The circuits are synthesized in UMC 1.8 V 0.18 μm process, and the results show that the chip consumes 82.97 μW of power and occupies 2.303 mm² of silicon area. This baseband circuits meet the wireless AMR enterprise standard specifications, and would be integrated in a wireless AMR SoC in the future.