Amplitude adaptive standard frequency output circuit with low phase noise

• Main Authors: JIAN HEBING, YANG CAIFANG, DU YUKE, LI WENLONG, ZENG YINGCHUN, DENG YIFENG, WEN XUEBIN, ZHU MIN
• Format: Patent
• Language: Chinese; English
• Published: 28.06.2022
• Subjects: BASIC ELECTRONIC CIRCUITRY; ELECTRICITY; GENERATION OF NOISE BY SUCH CIRCUITS; GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING,BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN ANON-SWITCHING MANNER; HOROLOGY; IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; PHYSICS; RADIO-CONTROLLED TIME-PIECES; RESONATORS

The utility model discloses an amplitude adaptive standard frequency output circuit with low phase noise. The amplitude adaptive standard frequency output circuit comprises a grading attenuation unit, a power division unit, a tuning filtering unit, a detection unit, a control unit, a standard frequency signal input end and a standard frequency signal output end, the input end of the graded attenuation unit is connected with the standard frequency signal input end, and the output end of the graded attenuation unit is connected with the combining end of the power division unit; the first branching end of the power division unit is connected with the input end of the tuning filtering unit, and the second branching end of the power division unit is connected with the input end of the detection unit; the output end of the tuning filtering unit is connected with the standard frequency signal output end; the output end of the detection unit is connected with the first end of the control unit; the second end of the c