Mekdes Gebresilassie Girma

A low-cost miniature 120GHz SiP FMCW/CW radar sensor with software linearization

This paper presents an integrated mixed-signal 120GHz FMCW/CW radar chipset in a 0.13μm SiGe BiCMOS technology. It features on-chip MMW built-in-self-test (BIST) circuits, a harmonic transceiver, software linearization (SWL) circuits and a digital interface. This chipset has been tested in a low-cost package, where the antennas are integrated. Above 100GHz, our transceiver has achieved state-ofthe-art integration level and receiver linearity, and DC power consumption.

An Integrated 122-GHz Antenna Array With Wire Bond Compensation for SMT Radar Sensors

This paper shows the antenna design of an integrated 122-GHz radar sensor. The sensor consists of a SiGe IC with a complete radar circuit and two antennas for transmitting and receiving the 122-GHz signal. The IC and the antennas are integrated into a low-cost plastic package that is assembled using wire bond technology. The antenna design was specifically optimized regarding the integration into the package and the compensation of the parasitic effects of the wire bond interconnect. First, the antenna design and its novel feeding technique based on a GCPW transmission line are explained. Then, measurement results including the wire bond interconnect are presented. Finally, details of the complete radar sensor are given.

A Fundamental Frequency 143-152 GHz Radar Transceiver with Built-In Calibration and Self-Test

This paper presents a 143-152 GHz radar transceiver that incorporates several self-test and calibration features to facilitate simple production testing, as well as correction of the analog front-end impairments. The transceiver was designed and fabricated in a production 130-nm SiGe BiCMOS technology and adopts a two channel heterodyne architecture that allows for the use of a low-IF frequency plan. Measurement results, presented both for the transceiver and for standalone circuit breakouts, demonstrate receiver DSB NF of 9-11 dB and transmitter output power of -12 dBm at the antenna port. The power consumption is 800 mW for 1.2 and 1.8 V power supplies.

122 GHz single-chip dual-channel SMD radar sensor with on-chip antennas for distance and angle measurements

This paper describes the design considerations, integration issues, packaging, and experimental performance of recently developed D-Band dual-channel transceiver with on-chip antennas fabricated in a SiGe-BiCMOS technology. The design comprises a fully integrated transceiver circuit with quasi-monostatic architecture that operates between 114 and 124 GHz. All analog building blocks are controllable via a serial peripheral interface to reduce the number of connections and facilitate the communication between digital processor and analog building blocks. The two electromagnetically coupled patch antennas are placed on the top of the die with 8.6 dBi gain and have a simulated efficiency of 60%. The chip consumes 450 mW and is wire-bonded into an open-lid 5 × 5 mm 2 quad-flat no-leads package. Measurement results for the estimation of range, and azimuth angle in single object situation are presented.