120 GHz Radar Front End

The TRX 120 01 RFE is an experimental, single-chip radar front end operating in the 122-123 GHz ISM band (N band) with an average power of 1 mW. Manufactured by Silicon Radar GmbH, this highly integrated IQ transceiver features on-chip antennas utilizing Silicon Germanium Technology. It is designed for short-range applications up to 10 meters, a range that can be extended by employing a dielectric lens to enhance the directivity of its integrated patch antenna. The chip incorporates a low-noise amplifier (LNA), quadrature mixers, a poly-phase filter, a Voltage Controlled Oscillator (VCO) with digital band switching and divide-by-32 outputs, along with integrated transmit and receive antennas. The 120 GHz VCO includes three analog coarse tuning inputs and one analog fine tuning input, which can be combined to achieve a broad tuning range and bandwidth, enabling operation in FMCW mode with an external fractional-N PLL, CW mode with a fixed oscillator frequency, or other modulation schemes.

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