Company Filing History:
Years Active: 2022-2025
Title: Athanasios Ramkaj: Innovator in RF Circuitry
Introduction
Athanasios Ramkaj is a prominent inventor based in Leuven, Belgium. He has made significant contributions to the field of radio frequency (RF) circuitry, particularly in the design of high-performance receivers. With a total of 2 patents to his name, Ramkaj continues to push the boundaries of innovation in this specialized area.
Latest Patents
Ramkaj's latest patents include groundbreaking work on front-end circuitry for receivers with RF sampling analog-to-digital converters (ADCs). This innovative design addresses the challenges of creating high sample rate, wide bandwidth receivers that meet stringent performance requirements for noise and linearity. The exemplary front-end circuitry integrates on-chip with the RF ADC, implementing essential features such as ESD protection, attenuation, and gain. Notably, the design incorporates a multi-tap filter with LC circuits, which provides a highly linear filtering capability. The capacitors in the LC circuits also serve a dual purpose by offering ESD protection. Additionally, tunable attenuator cells are integrated across the multi-tap filter, allowing for a wide range of variable attenuation. The resulting circuitry not only meets bandwidth, noise, and linearity requirements but also offers variable gain and attenuation.
Another significant patent focuses on amplifiers for RF ADCs. High-performance RF ADCs require input amplifiers that deliver high bandwidth, high linearity, and low noise. Ramkaj's Class-AB amplifier design utilizes common-gate and common-source transistor devices operating in parallel, achieving high bandwidth and linearity while consuming less power compared to traditional Class-A amplifiers. This Class-AB amplifier is complemented by a Class-AB unity gain buffer, which provides additional isolation for the RF ADC from preceding circuitry.
Career Highlights
Athanasios Ramkaj is currently employed at Analog Devices International Unlimited Company, where he continues to innovate in the field of RF technology. His work has garnered attention for its practical applications and contributions to enhancing receiver performance.
Collaborations
Ramkaj collaborates with talented professionals in his field, including Gabriele Manganaro and Filip Tavernier. Their combined expertise fosters a creative environment that drives innovation in RF circuitry.
Conclusion
Athanasios Ramkaj stands out as a key figure in the development of advanced RF circuitry. His patents reflect a commitment to innovation and excellence