77 GHz Radar Transmitter With PLL Based on a Sub-Harmonic Gilbert Frequency Doubler

This contribution highlights the usage of a high-quality voltage controlled oscillator (VCO) at 19.25 GHz fundamental frequency with a succeeding times four frequency multiplication scheme facilitating a 77 GHz output frequency. Signal tapping at the VCO's common emitter node allows obtaining t...

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Veröffentlicht in:	IEEE microwave and wireless components letters 2014-08, Vol.24 (8), p.539-541
Hauptverfasser:	Starzer, Florian, Forstner, Hans Peter, Maurer, Linus, Stelzer, Andreas
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Circuit properties Circuits of signal characteristics conditioning (including delay circuits) Electric, optical and optoelectronic circuits Electronic circuits Electronics Emittance Exact sciences and technology Frequency doublers Harmonic analysis Impedance matching Microwaves Offset phase-locked loop (OPLL) Oscillators, resonators, synthetizers Phase locked loops Prescalers Ramps Resonant frequency Signal convertors Synthesizers Tapping Tuning voltage controlled oscillator (VCO) Voltage controlled oscillators Wireless communication
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Beschreibung
Zusammenfassung:	This contribution highlights the usage of a high-quality voltage controlled oscillator (VCO) at 19.25 GHz fundamental frequency with a succeeding times four frequency multiplication scheme facilitating a 77 GHz output frequency. Signal tapping at the VCO's common emitter node allows obtaining the second-order harmonic tone that drives a single Gilbert frequency doubler. Beneficial to the PLL implementation is a reduced overall prescaler ratio allowing faster frequency ramps.
ISSN:	1531-1309 2771-957X 1558-1764 2771-9588
DOI:	10.1109/LMWC.2014.2321227