Infineon introduces new CMOS transceiver

Infineon Technologies has announced the RASIC CTRX8181 transceiver – the first product in a series of new 76 to 81 GHz radar MMICs based on 28-nm CMOS technology.

The improved signal-to-noise ratio and linearity of the transceiver provides high system-level performance and resilience. In addition, the easy-to-use radar transceiver simultaneously offers a scalable platform approach for different sensor including corner, front and short range, along with flexibility for new software-defined-vehicle architectures. This enables 77 GHz automotive radar applications at reduced development costs.

The CTRX8181 has been developed according to the latest ISO26262 safety standards and comes with 4 transmit and 4 receive channels.

The device offers excellent signal-to-noise ratio (SNR) and increases the standard module range by up to 25 percent (e.g. from 250 to more than 300 meters). The higher RF-channel count with improved linearity also enables 33 percent higher vertical or angular resolution to allow a better separation between different objects like pedestrians next to cars. These features contribute to the development of radar modules for all applications – from corner radar to high-resolution radar.

The in-chip digital phase-locked loop (PLL) allows faster ramps for better range resolution and ultra-fast fly back times, improved by the factor four compared to today’s best solutions. This new feature reduces power consumption and enables better accurate speed information required to separate objects at similar speeds.

It allows a completely free configurable ramp without compromising phase noise making the radar robust and reliable in different scenarios.

The new CTRX product family can be combined with Infineon's radar specific AURIX microcontrollers (MCUs) TC3x and upcoming TC4x, both with integrated signal processing units (SPU) and non-volatile memory for on-chip programme code storage.