Open AccessA Co‐design Study of Filters and Oscillator for Low Phase Noise and High Harmonic Rejection
Author(s) -
Zhang Bing,
Zhang Wenmei,
Ma Runbo,
Zhang Xiaowei,
Mao Junfa
Publication year - 2008
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.08.0207.0292
Subject(s) - dbc , phase noise , harmonics , band pass filter , harmonic , noise (video) , electronic engineering , materials science , phase (matter) , acoustics , electrical engineering , physics , engineering , computer science , voltage , quantum mechanics , artificial intelligence , image (mathematics)
In this paper, we present a novel oscillator (OSC) design. Bandpass filters, which can suppress harmonics, are incorporated into a co‐design with an OSC to improve the OSC phase noise and harmonic rejection. The proposed OSC/bandpass filter co‐design achieves a phase noise of −130.1 dBc/Hz/600 kHz and harmonic rejection of 37.94 dB and 40.85 dB for the second and third harmonics, respectively, as compared to results achieved by the OSC before co‐design of −101.6 dBc/Hz/600 kHz and 21.28 dB and 19.68 dB. Good agreement between the measured and simulated results is achieved.