Abstract
This paper presents a 24-GHz radar system based on a low-power, low-noise, multichannel, scalable transceiver (TRX) monolithic microwave integrated circuit (MMIC). The MMIC features two homodyne quadrature downconversion receivers with a single-sideband noise figure (NFssb) of 8 dB and an adjustable conversion gain (CG) of up to 87dB using integrated programmable analog baseband (ABB) amplifiers. Integrated baseband bypass feature allows using the same MMIC for Doppler as well as Frequency-Modulated Continuous-Wave (FMCW) radar applications. The transmit section features a fundamental frequency voltage controlled oscillator (VCO) and two transmitters with bidirectional RF ports. The transmitter delivers a maximum output power of +5 dBm. The measured phase noise at 100kHz offset was -90 dBc/Hz. Designed in a production ready 0.13μm SiGe:C BiCMOS technology, the chip consumes 165 mA from a 1.5V power supply with all blocks turned ON and consumes less than 100μA in the standby mode.
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