A PLL-Stabilized W-Band MHEMT Push-Push VCO with Integrated Frequency Divider Circuit
- 1 June 2007
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- No. 0149645X,p. 653-656
- https://doi.org/10.1109/mwsym.2007.379986
Abstract
In this paper, a PLL-based stabilization technique for monolithic integrated W-band voltage controlled oscillators (VCOs) is presented. A 92 GHz push-push oscillator in coplanar waveguide technology and a frequency divider by eight were developed and integrated on a single MMIC using our established 100 nm metamorphic HEMT technology. The oscillator achieves a tuning range of 3.4 GHz around the center frequency of 92 GHz and an output power of more than 5.5 dBm. By applying this concept, the VCO was synchronized to a low frequency reference signal at 180 MHz using a commercially available PLL circuit. Compared to the free running oscillator, the phase-noise was improved by 24 dB to -77 dBc/Hz at 100 kHz offset from the carrier.Keywords
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