Global design of an active integrated antenna for millimeter wave

An active integrated antenna working in the millimeter wave has been realized in a monolithic process. The concept of active integrated antenna is first introduced, then the design of the integrated circuit based on a global approach, following electromagnetic and circuit simulations, is presented. The obtained performances of the active antenna are discussed and compared to a passive one

High Sensitivity SSR Based Sensor Used for Permittivity Measurement

The proposed compact sensor is based on a Split Square Resonator (SRR) to improve the detection. The dimensions of the SRR have been chosen to provide a mutual coupling with a high sensitivity. The material under test (MUT) is placed in the near-field region of the sensor. This design exhibits a high sensitivity close to 58% as the relative permittivity of MUT’s changes from 1 to 10. The proposed sensor can measure the permeability and losses

Electromagnetic modelling of Leaf Water Potential under Ultra-Wide Band Microwaves Sensing

Noninvasive sensor of plant that measure leaf concentration water is purposed. It is based on a microstrip structure where the loaded layer is represented by a mathematical model. The leaf is represented with the cellulose Cole-Debye model, that includes fresh water molecules which are simulated with different size to characterize the turgescence and plasmolysis behavior. The concept is validated and compared to Cole-Debye model for different situation of stress leaf, represented by an equivalent dielectric cell over the sensor

High Sensitivity SSR Based Sensor Used for Permittivity Measurement

The proposed compact sensor is based on a Split Square Resonator (SRR) to improve the detection. The dimensions of the SRR have been chosen to provide a mutual coupling with a high sensitivity. The material under test (MUT) is placed in the near-field region of the sensor. This design exhibits a high sensitivity close to 58% as the relative permittivity of MUT’s changes from 1 to 10. The proposed sensor can measure the permeability and losses