MUMBAI, India, June 22 -- Intellectual Property India has published a patent application (202631037135 A) filed by Indian Institute Of Technology Bhubaneswar on March 26, 2026, for Sub-Harmonic N-Path Mixer-First Receiver Rf Front-End.
Inventors include Kammari Raviteja; and Vijay Shankar Pasupureddi.
The application for the patent was published on June 12, 2026, under issue no. 24/2026.
Abstract: ABSTRACT TITLE: SUB-HARMONIC N-PATH MIXER-FIRST RECEIVER RF FRONT-END A negative baseband impedance system for RF and/ or sub-harmonic sampling and method thereof is provided in relation to RFIC design of wireless receiver RF front-ends. N-path mixer-first RF front-ends are predominant in programmable and high linearity receivers. However, they are suitable for RF sampling but not for the sub-harmonic sampling due to the lack of input impedance matching at the harmonics of the LO. The present invention addresses this problem by proposing a negative baseband impedance scheme. This makes the impedance matching of the front-end with the input source at the harmonics of the LO possible without increasing the number of paths of the N-path mixer. Hence, it saves the power consumption of LO generation. The proposed innovation with the implementation of 4-path and 8-path mixers operating at 3rd and 5th harmonics, respectively, is shown; however, the proposed idea can be scaled to any number of paths of the mixer and any harmonic order greater than N/2.
Disclaimer: Curated by HT Syndication.
