A compact low-phase noise oscillator with superior harmonic suppression characteristics based on novel nested split-ring resonator (NSRR). Issue 8 (28th September 2015)

• Record Type: Journal Article
• Authors: Liu, Yong; Xie, Neng; Tang, Xiaohong; Xiao, Fei
• Is Part Of: International journal of microwave and wireless technologies. Volume 8:Issue 8(2016)
• Page Start: 1155
• Page End: 1161
• Publication Date: 2015-09-28
• Subjects: Oscillator, -- Nested split-ring resonator, -- high Q-factor, -- Low-phase noise, -- Harmonic suppression; Wireless communication systems -- Periodicals; Microwave circuits -- Periodicals; Radio frequency -- Periodicals; 621.381305
• DOI: 10.1017/S1759078715001452
• Languages: English
• ISSNs: 1759-0787

Abstract

Abstract : In this paper, a novel microwave oscillator incorporating miniaturized nested split-ring resonators is proposed. The high-quality (Q) factor and wide spurious-free band of the NSRR contribute to low-phase noise and high-harmonic suppression of the proposed oscillator circuits. In addition, the NSRR is featured by compact size of 0.12λg × 0.12λg, where λg is the guided wavelength of resonance frequency. The fabricated 2.4 GHz oscillator has an output power of 11.7 dBm with 5 V DC supply and 10 mA current consumption. The second harmonic suppression is −45.49 dBc, the phase noise is −110 dBc/Hz @100 kHz, and the DC–RF conversion efficiency is measured as 30%.