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- Title
A Simplified G m − C Filter Technique for Reference Spur Reduction in Phase-Locked Loop.
- Authors
Chary, P. Purushothama; Shaik Peerla, Rizwan; Dutta, Ashudeb
- Abstract
This paper presents a wideband approach for L5 and S-band integer-N phase-locked loop (PLL) targeting Indian Regional Navigation Satellite System (IRNSS) applications. A reference spur reduction technique using a G m − C filter is proposed. The reference spur is improved by 7 dB when compared with one without any G m − C filter. The wideband integer-N PLL is designed and fabricated in UMC 65-nm CMOS process. The G m − C filter block consumes 200 μ A current. The wideband voltage-controlled oscillator (VCO) oscillates from 1.6 GHz to 3.2 GHz having a tuning range (TR) of 40 % , achieving a best and worst phase noise of ≈−122 dBc/Hz and ≈ − 116 dBc/Hz at a 1 MHz offset, respectively.
- Subjects
PHASE-locked loops; PHASE noise; VOLTAGE-controlled oscillators; ARTIFICIAL satellites in navigation
- Publication
Journal of Low Power Electronics & Applications, 2024, Vol 14, Issue 1, p17
- ISSN
2079-9268
- Publication type
Article
- DOI
10.3390/jlpea14010017