Large-dynamic fine-stepping numerical control attenuator system

• Main Author: LU TIANXIN
• Format: Patent
• Language: Chinese; English
• Published: 30.06.2020
• Subjects: BASIC ELECTRONIC CIRCUITRY; ELECTRICITY; IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS

The utility model discloses a large dynamic fine stepping numerical control attenuator system, which relates to the field of attenuation control, and comprises a power supply module, a control interface, a control correction register, a first driving circuit, a second driving circuit, a fine stepping attenuation sub-module and a coarse stepping attenuation module, the coarse stepping attenuation module comprises a plurality of stages of attenuation sub-modules which are sequentially cascaded, and each stage of attenuation sub-module comprises a thin film fixed attenuator and a PIN tube switchconnected in parallel with the thin film fixed attenuator; according to the system, the limitation of a traditional numerical control attenuator is overcome; the working frequency is extremely wide, the dynamic range is extremely large, and the attenuation precision and stepping are good; and the output power is easy to control, a PIN tube switch and a thin film fixed attenuator are integrated into a universal module; the