LANTERI , Jérôme

These last years, LEAT worked on systems radars of help for the detection of cables of high voltage (security in theft for helicopters) in millimetre band. Traditionally, the used antennas are parabolic reflectors giving of very good performances but costly. A less expensive alternative in circuit printed was developed these last years:...

A phase shifter designed in a 130 nm CMOS technology is presented. It consists of a variable gain amplifier in cascade with a 2.45 GHz LC differential quadrature oscillator and allows to get a continuous phase step from 0° to 360°. An application to dynamic beam scanning is presented and a 1° accuracy of the scanning angle is demonstrated for...

This paper presents the radiation pattern measurement of a monopole installed on a large structure (carrier) in non anechoic environment. Proposed method is based on Cylindrical Modes Coefficients (CMC) decomposition and modal filtering to suppress reflections. First Cylindrical Near to Far Field Transformation and CMCs computing are described....

This paper investigates a new concept of active cell for Fresnel reflector using Phase Locked Loop (PLL) based phase shifter. PLL architecture and phase tuning simulation results obtained with a 130nm CMOS technology are presented. Preliminary simulations of active unit cell are provided tovalidate the concept. Radiation pattern and E-field...

National audience

This paper investigates a new concept of active cell for Fresnel reflector using Phase Locked Loop (PLL) based phase shifter. PLL architecture and phase tuning simulation results obtained with a 130nm CMOS technology are presented. Preliminary simulations of active unit cell are provided tovalidate the concept. Radiation pattern and E-field...

STA-O5 - Systèmes et/ou méthodes de caractérisation

International audience

National audience

This paper presents Exponential Tapered slot antenna (ETSA) radiation pattern measurement in Non Anechoic Environment. It suggests a method based on CMC decomposition and modal filtering in order to get rid of perturbations. First Cylindrical Near-field to Far-field Transformation and calculation of CMC are described. Then a simulation on an...

This paper discusses the changes and adaptations made on the original 1-bit active elementary cell for fabrications and optimization purpose. The changes improve the directivity value and the side lobes level. Moreover it also offers possibility to integrate directly radome protection layer on the reflectarray. 21×21 active reflectarray is...

This paper discusses the design and conception of single-bit elementary cell that can be controlled electronically. Based on the simulation results, the concept is theoretically working. A 25 25 Fresnel reflectarray is simulated to test the capability of the cell to do beam scanning.

This paper presents measurement results to assessthe impact of the mechanical accuracy in a spherical scanner. Twodifferent test case including a 3D antenna characterization and ascattering measurement are proposed.

National audience

National audience

National audience

International audience

This article describes the design of a passive Bi-band Fresnel reflectarray (20–30 GHz). It is focused on the design of the reflecting panel of the reflectarray. Two different primary feeds will be used at 20 and 30 GHz, respectively for demonstrating the proposed concept. Nevertheless, in the final design a switched primary feed will have to...

This paper presents the design of an offset reflectarray illuminated by a printed primary source. The proposed build-up is compatible with flip-chip technology, enabling a direct connection between the RFIC and the antenna source. Measurements are realized using a GSG RF probe and a good agreement is obtained with simulated data