A compact low-phase noise oscillator with superior harmonic suppression characteristics based on novel nested split-ring resonator (NSRR)

作者：Liu, Yong^*; Xie, Neng; Tang, Xiaohong; Xiao, Fei

来源：International Journal of Microwave and Wireless Technologies, 2016, 8(8): 1155-1161.

DOI：10.1017/S1759078715001452

• Oscillator
• Nested split-ring resonator
• high Q-factor
• Low-phase noise
• Harmonic suppression

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 0.12 lambda(g) x 0.12 lambda(g), where lambda(g) 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%.

• 出版日期2016-12
• 单位电子科技大学