MUMBAI, India, April 17 -- Intellectual Property India has published a patent application (202641043412 A) filed by Bapatla Surendra Babu; and Irukumalli Priyanka, Tenali, Andhra Pradesh, on April 5, for 'parametric-amplified injection-locking extended-range oscillator apparatus exploiting sub-threshold nonlinear mixing.'
Inventor(s) include Bapatla Surendra Babu; and Irukumalli Priyanka.
The application for the patent was published on April 17, under issue no. 16/2026.
According to the abstract released by the Intellectual Property India: "An apparatus that breaks the Adler lock-range/phase-noise tradeoff by exploiting sub-threshold parametric pumping within a resonant tank. An oscillator core (110) receives a weak injection signal (120) at f0. A parametric pump source (140) drives a nonlinear reactive element (130) at 2f0. A pump AGC loop (240) regulates the sub-threshold pump strength (220) (gp), keeping the system safely below the Mathieu instability boundary (230) (gp = 1). Through three-wave mixing, this generates active parametric gain (210) at f0 equal to 1/(1-gp). The gain amplifies the effective locking force of the weak injection signal within the same resonant tank, multiplying the conventional Adler lock range (310) to yield an extended lock range (320) that increases exponentially as the sub-threshold pump strength approaches the instability threshold. Because the gain increases locking force without increasing physical injection signal amplitude, the apparatus completely avoids a conventional phase noise penalty (410) of direct injection overdrive. This phase noise penalty limitation (430) achieves increased frequency agility while preserving pristine spectral purity for 5G/radar systems."
Disclaimer: Curated by HT Syndication.
