System Design of a High-Temperature Downhole Transceiver: Part II – Transmitter

This paper presents a system level design of a transmitter for high-temperature downhole communications. The transmitter aims to operate up to 250 °C. The transmitter is simulated in the AWR design environment. The simulation results indicate that the transmitter can adaptively support a data rate up to 170 Mbps by dynamically switch between 16-, 32-, 64-QAM at 250 °C across ten channels. Simulation results also show that the proposed transmitter operates reliably over the temperature range of 25 °C to 250 °C.