Bidirectional control flow control oscillator

• Main Authors: YUAN HENGZHOU, GUO YANG, LIANG BIN, SANG HAO, CHEN JIANJUN, CHI YAQING, LUO DENG, XU XINYU, YAN GUANGDA, SHENG RUQIONG, CHEN XI, WU ZIRUI
• Format: Patent
• Language: Chinese; English
• Published: 02.09.2022
• Subjects: AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATIONOF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES; BASIC ELECTRONIC CIRCUITRY; ELECTRICITY; PULSE TECHNIQUE

The invention discloses a bidirectional control flow-controlled oscillator, which comprises a ring oscillator and a negative feedback circuit, the output end of the negative feedback circuit is connected with the current control end of the ring oscillator, and the negative feedback circuit isolates power supply noise and performs current control on the ring oscillator to realize frequency coarse tuning. The output end of each stage of the ring oscillator is also provided with a varactor, and the fine adjustment of the oscillation frequency is realized by controlling the capacitance of each varactor. The low-phase-noise flow-controlled oscillator can be achieved, meanwhile, power supply noise can be isolated, and coarse tuning and fine tuning of the frequency are combined. 本发明公开一种双向控制的流控振荡器，包括环形振荡器以及负反馈电路，所述负反馈电路的输出端与所述环形振荡器的电流控制端连接，由所述负反馈电路隔离电源噪声并对所述环形振荡器进行电流控制以实现频率粗调，所述环形振荡器的每一级的输出端还设置有变容管，通过控制各所述变容管的电容大小以实现振荡频率的细调。本发明能够实现低相位噪声的流控振荡器，同时还能够隔离电源噪声以及实现频率粗调和细调相结合。