Title :
An integrated harmonic transmitter front-end for 122 GHz FMCW/CW radar sensor
Author :
Sun, Yaoming ; Scheytt, Christoph J.
Author_Institution :
IHP, Frankfurt (Oder), Germany
Abstract :
This paper presents an integrated harmonic transmitter front-end for a single-chip 122 GHz FMCW/CW radar sensor. It consists of two building blocks, a frequency doubler and a two-directional power detector. The frequency doubler employs a push-push frequency doubling core and a common-base stage. It exhibits a 2.5 dB conversion gain and a 5 dBm output power. The two-directional power detector is used for self testing, which utilizes a single directional coupler to save chip area and to reduce insertion loss. It can detect the output power of the transmitter and can detect any antenna mismatch of above -20 dB. This transmitter front-end can be fully characterized by DC measurement after integrated into a single-chip 122 GHz transceiver.
Keywords :
CW radar; FM radar; bipolar MIMIC; built-in self test; frequency multipliers; millimetre wave directional couplers; millimetre wave radar; radar antennas; radar transmitters; sensors; transceivers; DC measurement; antenna mismatch; common-base stage; conversion gain; frequency 122 GHz; frequency doubler; insertion loss reduction; integrated harmonic transmitter front-end; push-push frequency doubling core; self-testing; single directional coupler; single-chip CW radar sensor; single-chip FMCW radar sensor; single-chip transceiver; two-directional power detector; Current measurement; Detectors; Gain; Impedance matching; Power generation; Power measurement; Transmission line measurements; 122 GHz radar; Millimeter wave integrated circuits; frequency doubler; harmonic transmitter; millimeter wave build-in-self-test (BIST); millimeter wave power detector;
Conference_Titel :
Microwave Integrated Circuits Conference (EuMIC), 2011 European
Conference_Location :
Manchester
Print_ISBN :
978-1-61284-236-3
