A Digital Adjustable Fully Integrated Bistatic Interferometric Radar Transceiver at 60 GHz in a 130 nm BiCMOS Technology

In this paper a 60 GHz monolithic bistatic interferometric radar transceiver for high precision measuring is presented. The integrated transceiver has been designed using a 0.13 mu m SiGe BiCMOS process from IHP (SG13G2) and includes a LNA, a passive six-port structure, detectors, multiplier, multiplexer, power amplifier and a digital interface. The chip has a size of 2330 mu m x 1360 mu m and a maximum power consumption of 533mW from a 3.3V power supply. The circuit provides two frequency inputs of 7.5 and 15 GHz and multiplies them up to 60 GHz at a minimum input power of -20 dBm. The chip delivers a maximum output power of 9dBm at 61 GHz. The input path is selectable and the output power is adjustable by a digital interface between -23 and 9dBm at 60 GHz. Also the reference input power of the six-port and the RF input power can be adjusted in a range of 13.2 dB. The minimum input referred P1dB is -24.1 dBm. With a multiplexer, the receiver reference can be separated from the transmitter, which allows the use of both independently from each other. The serial interface is realized in 0.13 mu m CMOS logic and consists of a 20 bit shift register, decoder and an analog interface.