Self-packaged adaptive amplitude equalizer

CN122268309APending Publication Date: 2026-06-2358TH RES INST OF CETC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
58TH RES INST OF CETC
Filing Date
2026-03-19
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

Existing amplitude equalizers cannot achieve real-time sensing, accurate compensation, and adaptive correction of autonomous gain slope, resulting in severe performance drift during on-orbit operation, affecting signal integrity and system reliability, and lacking deep integration capabilities with digital control systems.

Method used

It adopts a self-encapsulated adaptive amplitude equalizer, which uses the tuning branch and main transmission circuit of the electrically tunable topology, combined with the real-time data acquisition of the MCU microcontroller and the compensation control of the pre-stored lookup table and aging model to achieve continuous slope adjustment from -10dB to +10dB and temperature change compensation, and has aging compensation capability.

Benefits of technology

It achieves autonomous gain slope adjustment throughout the entire life cycle, improves system integration and reliability, is suitable for unattended maintenance environments, extends system life, and simplifies the debugging process.

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Abstract

The application relates to a self-enclosed self-adaptive amplitude equalizer. The equalizer comprises an equalization circuit, a tuning branch one and a tuning branch two adopting an electric tuning topological structure, the resistance values of the tuning branch one and the tuning branch two are adjusted to realize continuous slope adjustment of-10 dB to +10 dB in a 300 MHz to 1200 MHz frequency band; a main transmission circuit, an input end RFin and an output end RFout of which are respectively used as an input end and an output end of the equalizer; and the outputs of the tuning branch one and the tuning branch two are connected to a fusion node A on the main transmission circuit; a data acquisition and operation circuit, temperature and amplitude-frequency response data are collected in real time through an MCU microcontroller, and a pre-stored temperature-frequency-compensation lookup table and an aging model are combined to calculate a compensation control signal. The equalization circuit slope is adjusted through SPI control of a digital potentiometer and a varactor, and closed-loop self-correction is realized without manual intervention.
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