A Digital Adjustable 60-GHz Integrated Sixport Receiver Front-End in a 130-nm BiCMOS Technology

In this paper, a fully integrated digital adjustable sixport receiver front-end working at 60GHz is presented. The circuit features two variable gain amplifier, the passive sixport network, four detectors and a SPI-interface. Application area are industrial radar or angle of arrival detection. The phase measurement is done by superposition and power detection of two millimeter wave signals. The integrated circuit has a power consumption of 88.44mW from a 3.3V supply voltage. It is fabricated in a 0.13 μm SiGe BiCMOS process and has a size of 1560 μm × 1000 μm. The RF and reference input power can be adjusted in a 21dB range over a 12bit digital interface. The receiver exhibits a 1dB compression point of -21.9dB. RF signals down to -55dBm are detectable.