Harmonic rejection system for on-chip integration of ultra-wideband amplifiers and amplifiers
By dividing the frequency band of the ultra-wideband amplifier into multiple narrow subbands and adopting a dynamic gating filter path, the problem of fundamental and harmonic overlap in ultra-wideband scenarios is solved, achieving efficient harmonic suppression and low-loss transmission of the fundamental signal, thus avoiding the defects of traditional filter schemes.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHENGDU YUXI SEMICON TECH CO LTD
- Filing Date
- 2026-05-27
- Publication Date
- 2026-06-26
AI Technical Summary
Existing technologies cannot effectively suppress harmonics in the overlapping frequency bands of fundamental and harmonic frequencies in ultra-wideband scenarios. Traditional filter solutions result in increased insertion loss, decreased output power, and high design complexity.
The operating frequency band of the ultra-wideband amplifier is divided into multiple narrow sub-bands, with the upper limit frequency of each sub-band being less than twice its lower limit frequency. Input and output RF switches are combined with filter paths, and the filter paths are dynamically selected by the frequency control unit to achieve low-loss transmission of the fundamental frequency and harmonic suppression.
Without compromising the transmission efficiency of the fundamental signal, it achieves deep suppression of second and higher harmonics, avoids the cumulative insertion loss of traditional multi-stage filter cascades, ensures the output power and efficiency of the amplifier, and enables the system to be miniaturized and adaptable to frequency changes.
Smart Images
Figure CN122293045A_ABST