Concept

Antenna tuner

Related publications (98)

Near-infrared wafer-fused vertical-cavity surface-emitting lasers for HF detection

Elyahou Kapon, Grigore Suruceanu, Alexandru Mereuta, Vladimir Iakovlev, Alexei Sirbu, Andrei Caliman

1310 nm Wavelength VCSELs produce single mode emission in excess of 1 mW in the temperature range of 20-70 degrees C with a very low relative intensity noise of -148 dB/Hz. These devices have a broad tuning range of similar to 50 cm(-1) with variable tempe ...

Elsevier2014

Human body effects on the matching of a 2.45 GHz coplanar-fed antenna

Nuno Miguel Faria Pires

This paper presents a coplanar-fed antenna designed to operate close to the human body in the 2.45 GHz Industrial Scientific Medical (ISM) band. The antenna matching is studied in free space and in body proximity. Two models of the human arm, with flat and ...

2013

Resonant RF network antennas for large-area and large-volume inductively coupled plasma sources

Christoph Hollenstein, Alan Howling, Philippe Frédérique Bruno Guittienne

Large-area and large-volume radio frequency (RF) plasmas are produced by different arrangements of an elementary electrical mesh consisting of two conductors interconnected by a capacitor at each end. The obtained cylindrical and planar RF networks are res ...

Iop Publishing Ltd2013

Implantable antennas: the challenge of efficiency

Anja Skrivervik

A discussion on the main challenges designing efficient antennas for bio-implantable communication devices is presented, along with some of the main issues encountered in their characterization. Such devices are used in conjunction with health monitoring o ...

IEEE2013

A Zero Capacitive LINC Architecture for Efficient Broadband Transmitters

Adil Koukab

A new approach for linear amplification with nonlinear components (Z-LINC) that provides a zero capacitive load to their power amplifiers is proposed. The zero capacitive loading over the whole power back-off range enables to overcome the efficiency deteri ...

Ieee2013

MIMO transmission using a single RF source: theory and antenna design

Julien Perruisseau-Carrier

An approach for transmitting multiple signals using a single switched parasitic antenna (SPA) has been recently reported. The idea there is to map the signals to be transmitted onto a set of basis functions that serve as “virtual antennas” in the beamspace ...

Institute of Electrical and Electronics Engineers2012

Proof of concept of a dual-band circularly-polarized RF MEMS beam-switching reflectarray

Julien Perruisseau-Carrier, Caner Güçlü

In this communication we propose the concept of a circularly polarized reflectarray (RA) antenna capable of independent beam-switching in both K and Ka bands. The RA unit cell comprises one microstrip ring per each operation frequency. Each ring is integra ...

Institute of Electrical and Electronics Engineers2012

A New Power Divider Architecture for Suspended Strip Line

Juan Ramon Mosig, Jean-François Zürcher, Rafal Glogowski

In this paper the authors present a novel power divider architecture intended to be used with the Suspended Strip Line (SSL) transmission line. The new antenna array systems, that are designed to work in the millimetre wave ranges, are suffering from the l ...

2012

Time-Domain Generalized Telegrapher's Equations for the Electromagnetic Field Coupling to Finite Length Wires Above a Lossy Ground

Abdolhamid Shoory

In this paper, a time-domain variant of the generalized telegrapher's equations for transient electromagnetic field coupling to a finite-length wire above a lossy half-space is derived. The approach is fully based on the thin-wire antenna theory. The lossy ...

2012

Optimizing ion-cyclotron resonance frequency heating for ITER: dedicated JET experiments

Mikhail Maslov

In the past years, one of the focal points of the JET experimental programme was on ion-cyclotron resonance heating (ICRH) studies in view of the design and exploitation of the ICRH system being developed for ITER. In this brief review, some of the main ac ...

2011

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