A 24GHz Transformer Coupled CMOS VCO for a Wide Linear Tuning Range

Jae-Hoon SONG  Byung-Sung KIM  Sangwook NAM  

IEICE TRANSACTIONS on Electronics   Vol.E96-C   No.10   pp.1348-1350
Publication Date: 2013/10/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E96.C.1348
Print ISSN: 0916-8516
Type of Manuscript: BRIEF PAPER
Category: Electronic Circuits
voltage controlled oscillator (VCO),  wide linear tuning,  transformer coupling,  CMOS,  

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In this paper, a 24GHz transformer-coupled VCO is presented for a wide linear tuning range in the 0.13-µm CMOS process. The measured results of the proposed VCO show that the center frequency is 23.5GHz with 7.4% frequency tuning range. The output frequency curve has wide linear tuning region (5.5%) at the middle of the curve. Also, the VCO exhibits good phase noise of -110.23dBc/Hz at an offset frequency of 1 MHz. It has a compact chip size of 430 × 500µm2. The VCO core DC power consumption is 5.4mW at 1.35V VDD.