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Hybrid antenna design for an optically powered SHF RFID transponder applicable in metals
This paper presents a hybrid antenna design for an optically powered super high frequency (SHF) radio frequency identification transponder applicable for the integration into metal. The key feature of the antenna is its ability to receive microwave signals at SHF for data communication and optical signals for the power supply of the transponder. The antenna design is based on a circular waveguide
MRF volume 5 issue 3 Cover and Front matter
EuMW Special Issue
MRF volume 5 issue 3 Cover and Back matter
Cylindrical near-field far-field transformation in a half-space with conditions of dielectric and lossy ground
The direct measurement of the radiation pattern of an antenna is often unreachable. A near-field sampling followed by a near-field/far-field (NF/FF) transformation is therefore substituted. This process is, in most cases, applied to antennas placed in free-space or over a perfect electric conductor. On the contrary, few results concern real environment conditions. Nevertheless, it is well known th
Compact diplexers and triplexers implemented with dual-mode cavities
In this paper, the design of compact diplexers and triplexers with dual-mode cavities is presented. Such devices are composed of coupled resonators without additional waveguide element, leading to a more compact architecture. Two topologies of compact diplexers are implemented and compared to a standard manifold diplexer. A hardware prototype is fabricated and measured for experimental verificatio
Enhanced performance of a 60-GHz power amplifier by using slow-wave transmission lines in 40 nm CMOS technology
This paper shows the contribution of slow-wave coplanar waveguides on the performance of power amplifiers operating at millimeter-wave frequencies in CMOS-integrated technologies. These transmission lines present a quality factor Q two to three times higher than that of the conventional microstrip lines at the same characteristic impedance. To demonstrate the contribution of the slow-wave transmis
Characterization of integrated antennas at millimeter-wave frequencies
This paper presents two feeding techniques for the radiation characterization of integrated antennas at millimeter-wave frequencies. The first method involves feeding the antenna-under-test (AUT) with a radiofrequency (RF) probe. We compare the measurements obtained with a standard RF probe, an extended probe, and an extended probe with reversed connector orientation. We find that the reversed ori
Generation of electrical self-oscillations in two-terminal switching devices based on the insulator-to-metal phase transition of VO thin films
We present the non-linear electrical properties of simple two-terminal switching devices based on vanadium dioxide (VO) thin films. The current?voltage characteristics of such devices present negative differential resistance (NDR) regions allowing generating electrical self-oscillations across the investigated devices, with frequencies ranging from several kHz up to 1 MHz. We investigate and compa
Wireless communicating nodes at 60 GHz integrated on flexible substrate for short-distance instrumentation in aeronautics and space
This paper presents the research done at LAAS-CNRS and in the context of ?NANOCOMM? project. This project aims to demonstrate the potential of nanotechnology for the development of reconfigurable, ultra-sensitive, low consumption, and easy installation sensor networks with high performance in terms of reliability in line with the requirements of aeronautics and space. Each node of the sensor netwo