FREQUENCY SELECTIVE CIRCUIT

• Main Authors: YUAN-HUNG CHUNG, MING-YEH HSU
• Format: Patent
• Language: Chinese; English
• Published: 09.11.2016
• Subjects: BASIC ELECTRONIC CIRCUITRY; ELECTRICITY; IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS

The invention discloses a frequency selective circuit. The frequency selective circuit includes a first transistor, an impedance element, a first capacitive element, a second capacitive element, and a second transistor. The first transistor includes a first terminal, a second terminal and a control terminal. The impedance element is coupled between the first terminal and the control terminal of the first transistor. The first capacitive element is coupled to the first terminal of the first transistor. The second capacitive element is coupled to the control terminal of the first transistor. The second transistor includes a first terminal, a second terminal and a control terminal, wherein the control terminal of the second transistor is coupled to the control terminal of the first transistor, and the first terminal of the second transistr outputs an output current. According to the invention, the frequency selective circuit fulfills high Q filtering in the absence of extra current consumption. 本申请提供了种频率选择电路。该频率