M
M. Le Roy
Researcher at Centre national de la recherche scientifique
Publications - 19
Citations - 415
M. Le Roy is an academic researcher from Centre national de la recherche scientifique. The author has contributed to research in topics: Group delay and phase delay & Microstrip. The author has an hindex of 10, co-authored 17 publications receiving 383 citations. Previous affiliations of M. Le Roy include University of Western Brittany.
Papers
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Journal ArticleDOI
Active Microwave Circuit With Negative Group Delay
TL;DR: In this paper, the design, simulation and implementation of an active negative group delay circuit that operates at 1 GHz with a group delay and a gain, respectively, around 2 ns and 2 dB.
Proceedings ArticleDOI
Synthesis of Broadband Negative Group Delay Active Circuits
TL;DR: In this paper, the design and synthesis of active circuits able to simultaneously produce negative group delay and gain at microwave frequencies or for baseband signals is discussed, and a synthesis approach is extracted and applied to design a two-stage microwave circuit, further validated by experimental results.
Journal ArticleDOI
Application of negative group delay active circuits to the design of broadband and constant phase shifters
TL;DR: In this paper, a phase shifter with a negative group delay (NGD) active circuit was proposed to achieve a constant phase of 90° ± 5° over a 75% relative bandwidth around 1.6 GHz.
Journal ArticleDOI
The continuously varying transmission-line technique - application to filter design
TL;DR: An original approach to analyze and optimize continuously varying transmission lines (CVTLs) is used to design planar microwave filters based on exact solutions of the telegrapher's relations of nonuniform transmission lines.
Proceedings ArticleDOI
Broadband balun using active negative group delay circuit
TL;DR: In this article, a broadband balun using an active circuit with negative group delay (NGD) is proposed, where the unit cell of the active NGD circuit is based on a Field Effect Transistor (FET) in cascade with an RLC series network.