MUMBAI, India, July 13 -- Intellectual Property India has published a patent application (202647082230 A) filed by Qualcomm Incorporated on July 03, 2026, for Temporary Change To The Bandwidth Of A Direct Current Notch Filter Of A Direct Current Estimator Of An Apparatus Having A Downlink Pipe Utilized In A Multi-Subscriber Identity Module Mode.
Inventors include Nagarajan, Saranyan; Pachava, Srinivas; Ramabadran, Prasidh; Tanuku, Krishnamitra; Somichetty, Gowrisankar; Itankar, Yogendra Umesh Number; Bhattad, Kapil; Rajendran, Parthiban; Ghosh, Priyangshu; Lan, Lan; Chen, Qingxin; and Sridhara, Sriramgopal.
The application for the patent was published on July 10, 2026, under issue no. 28/2026.
Abstract: An apparatus is in a multi-subscriber identity module mode. A first signal in a first plurality of slots associated with a first subscription at a first receiver chain of a downlink pipe and a second signal in a second plurality of slots associated with a second subscription at a second receiver chain of the downlink pipe are received. A difference in timing of a first slot boundary of the first plurality of slots and a second slot boundary of the second plurality of slots is tracked. In response to a change of state of the second receiver chain, a first bandwidth of a direct current (DC) notch filter associated with a DC estimator of the first receiver chain is temporarily increased to a second bandwidth at a same time, prior to, or subsequent to the first slot boundary according to a timing relationship between the first and second boundaries.
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