Design of 50-GHz Low Phase Noise VCO Employing Two-Branches DGS Resonator in 0.18- μm CMOS Technology

Baichuan Chen, Ramesh K. Pokharel, Samundra K. Thapa, Nusrat Jahan, Mohamed Mohamed Barakat Adel Tawfik

Research output: Contribution to journalArticlepeer-review

Abstract

This letter presents a V-band low phase noise voltage-controlled oscillator (VCO) design using a novel integrated two-branches defected ground structure (DGS) resonator in 0.18-μm complementary metal-oxide-semiconductor (CMOS) technology. The proposed DGS resonator is realized in the top metal layer (M6) which has not only a higher quality factor than its predecessors but is also effective to reduce the length of interconnects. The measured carrier frequency and phase noise are 49 GHz and -122.05 dBc/Hz (-102.58 dBc/Hz) at 10-MHz (1-MHz) offset frequencies, respectively. The VCO core consumes 5.5 mW of dc power from the dc supply, which results in a figure of merit (FoM) of -189 dBc/Hz. The proposed VCO using the two-branches DGS resonator may give an alternative low-cost solution for designing a high-performance VCO or frequency synthesizer at V-band and beyond.

Original languageEnglish
Pages (from-to)1-4
Number of pages4
JournalIEEE Microwave and Wireless Components Letters
DOIs
Publication statusAccepted/In press - 2022

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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