Estimation de la permittivité et conductivité de différents matériaux entre 2 GHz et 260 GHz
International audience
Frequency Reconfigurable Dual Band PIFA Antenna for IoT and NB6IoT Applications
A frequency reconfigurable dual band Planar Inverted-F Antenna (PIFA) dedicated to operate in industrial environments is proposed for Internet of Thing (IoT) andNarrow-Band (NB)-IoT applications. The proposed dual-band structure comprises an active element and a parasitic element. These two elements cover initially (698-708 MHz) and (878-888 MHz), ...
Beamforming Measurement Synthesis of a 60GHz MillimeterWaves Antenna Array
This paper presents the measurement of a planar dual-polarized 60GHz 4-patch array. Each port has been individually measured in near-field with a 3D spherical scanner. Beamforming capabilities are post-processed and computedfrom 57 to 66GHz. The measurement accuracy and repeatability is analyzed in details.
Calibrating Scattered Field for mm-Waves Imaging: Methods and Challenges
Mm-wave imaging requires complex measurements of the scattered field followed by post processing. This paper investigates and compares different techniquesfor calibrating mm-waves measurements for qualitative imaging. We specifically discuss the results of the pointby- point subtraction method, the mean value subtraction and the single value decomp...
Multi-Port Passive and Active Measurement Platform With Remote Connectivity
In this contribution, we propose a new measurement platform for Multi-Port Passive and Active devices with remote control and monitoring of compliance tests. The platform uses eV-Technologies RF-Correlator modules in combination with Connektica agile software solutions for seamless triggering of frequency and time-domain instruments both in connect...
The Impacts of Terrestrial Antenna Orientation on Satellite Communication Using the TinyGS Platform
This paper presents the research about the influence of terrestrial antenna orientation on satellite communication links. The measurements are realized by using a combination of custom hardware, the TinyGS server, and the Grafana display platform. The results of the experiments could be processed and analyzed to provide some suggestions in terms of...
Pattern Reconfigurable ESPAR System for Long Range IoT Communications
A pattern reconfigurable parasitic element antenna system is proposed to operate in LoRa 868 MHz band. As part of a sensor for real-time air quality monitoring inurban spaces, the antenna system is composed of a single-fed wire-patch radiator surrounded by 4 shorted parasitic patches used to reconfigure the radiation pattern in 4 configurations thr...
Flexible Antenna With Body Humidity Sensing for BAN Applications
International audience
Reusing Antenna Booster for IoT Devices With Different Form Factors
This paper highlights the importance of efficient;antennas for IoT devices operating at the 863–928 MHz frequency band. It introduces antenna booster technology, which utilizes a small element called an antenna booster to exciteradiation currents on the device's ground plane. The antenna booster proposed in the paper is compact (12 mm × 3 mm × 2.4 ...
Integration of antenna with solar cell for broadband applications
This paper presents the design of an antenna dedicated to cohabiting with photovoltaic cells of solar panels. The proposed broadband solution uses stacked aperture-fed patches with a solar cell as an upper parasitic element. In this approach, the solar cells' functionality and the antenna's performance can be optimized despite the cohabitation in a...
