24-GHz ultra-wideband transmitter for vehicular short-range radar applications

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24-GHz ultra-wideband transmitter for vehicular short-range radar applications

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Published

This paper presents a 24-GHz transmitter for ultra-wideband short-range radar applications fabricated in a 0.13-µm SiGe:C BiCMOS technology. The circuit is composed of a frequency synthesiser, based on 24-GHz voltage-controlled oscillator in an N-integer phase-locked loop (PLL), a RF switch delivering a 0-dBm output power, and a tunable rectangular pulse generator, whose pulse width covers a range between 0.5 and 1.2 ns. The transmitter has been developed for a flip-chip bumping assembly on a module with an UWB antenna. Assuming a 10.5-dBi antenna gain, it is compliant with European Telecommunications Standards Institute (ETSI) transmission mask and is able to cover the main automotive applications addressing both a resolution better than 0.1 m and maximum unambiguous range of 15 m.

Inspec keywords: radar applications; phase locked loops; semiconductor materials; pulse generators; flip-chip devices; Ge-Si alloys; BiCMOS integrated circuits; voltage-controlled oscillators; carbon

Other keywords: flip-chip bumping assembly; SiGe:C; N-integer phase-locked loop; ultra wideband transmitter; tunable rectangular pulse generator; frequency 24 GHz; BiCMOS technology; voltage-controlled oscillator; vehicular short-range radar applications; RF switch; frequency synthesiser; size 0.13 mum

Subjects: Modulators, demodulators, discriminators and mixers; Radar equipment, systems and applications; Mixed technology integrated circuits; Power electronics, supply and supervisory circuits; Oscillators; Pulse generators

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