European Microwave Research Articles

Announcement: 39th European Microwave conference 2009

Announcement: 39th European Microwave conference 2009

Editorial/Guest Editorial

Contains an editorial by the Editors-in-Chief and a guest editorial by the General Chair of 2007 European Microwave Week (EuMW). The special issue contains 17 expanded conference papers that were presented at EuMW.

European Microwave Week in Amsterdam

European Microwave Week in Amsterdam

38th European Microwave Conference 2008

38th European Microwave Conference 2008

The European Microwave Intergrated Circuits Conference 2008

The European Microwave Intergrated Circuits Conference 2008

Biological effects from electromagnetic field exposure and public exposure standards

During recent years there has been increasing public concern on potential health risks from power-frequency fields (extremely low frequency electromagnetic fields; ELF) and from radiofrequency/microwave radiation emissions (RF) from wireless communications. Non-thermal (low-intensity) biological effects have not been considered for regulation of microwave exposure, although numerous scientific reports indicate such effects. The BioInitiative Report is based on an international research and public policy initiative to give an overview of what is known of biological effects that occur at low-intensity electromagnetic fields (EMFs) exposure. Health endpoints reported to be associated with ELF and/or RF include childhood leukaemia, brain tumours, genotoxic effects, neurological effects and neurodegenerative diseases, immune system deregulation, allergic and inflammatory responses, breast cancer, miscarriage and some cardiovascular effects. The BioInitiative Report concluded that a reasonable suspicion of risk exists based on clear evidence of bioeffects at environmentally relevant levels, which, with prolonged exposures may reasonably be presumed to result in health impacts. Regarding ELF a new lower public safety limit for habitable space adjacent to all new or upgraded power lines and for all other new constructions should be applied. A new lower limit should also be used for existing habitable space for children and/or women who are pregnant. A precautionary limit should be adopted for outdoor, cumulative RF exposure and for cumulative indoor RF fields with considerably lower limits than existing guidelines, see the BioInitiative Report. The current guidelines for the US and European microwave exposure from mobile phones, for the brain are 1.6 W/Kg and 2 W/Kg, respectively. Since use of mobile phones is associated with an increased risk for brain tumour after 10 years, a new biologically based guideline is warranted. Other health impacts associated with exposure to electromagnetic fields not summarized here may be found in the BioInitiative Report at www.bioinitiative.org.

38th European Microwave Conference 2008

38th European Microwave Conference 2008

Call for papers - European Microwave Week Munich

Call for papers - European Microwave Week Munich

Dual-Baseline Coherence Tomography

In this letter, we consider a dual-baseline formulation of coherence tomography and show how practical application of the method is limited by numerical stability. To help reduce this, we propose a regularization technique based on a matrix singular value decomposition to stabilize the inversion. We then apply the new dual-baseline algorithm to ground-based radar data from the European Microwave Signature Laboratory. We consider a sample of maize plants and employ dual-baseline interferometric data to reconstruct vertical tomograms through the vegetation as a function of frequency. We use these reconstructions to interpret the primary scattering mechanisms and their polarization dependence

37th European Microwave Conference 2007 - Call for Papers by 25 Feb. 2007

37th European Microwave Conference 2007 - Call for Papers by 25 Feb. 2007

Cluster-based fuzzy models for groundwater flow in the unsaturated zone

In this paper fuzzy models are used as an alternative to describe groundwater flow in the unsaturated zone. The core of these models consists of a fuzzy rule-based model of the Takagi–Sugeno type. Various fuzzy clustering algorithms are compared in the data-driven identification of these Takagi–Sugeno models. The performance of the resulting fuzzy models is evaluated on the training surface on which they were identified, and on time series measurements of water content values obtained through an experiment carried out by the non-vegetated terrain (NVT) workgroup of the European Microwave Signature Laboratory (EMSL) (see [Mancini M, Hoeben R, Troch PA. Multifrequency radar observations of bare surface soil moisture content: a laboratory experiment. Water Resour Res 1999;35(6):1827–38] and [Hoeben R, Troch PA. Assimilation of active microwave observation data for soil moisture profile estimation. Water Resour Res 2000;36(10):2805–19]). Despite higher errors at the borders of high water content values in the training surface, good results are obtained on the simulation of the time series.

Outsourcing trends in the commercial European microwave industry

This article analyzes outsourcing trends for main product lines in the commercial European microwave industry. While cellular base stations represent the largest portion of this market, outsourcing is also well consolidated for microwave point-to-point (PtoP) radios. Outsourcing activity has grown in recent years due to increased volume and technological improvement in critical parts

European Microwave Week

European Microwave Week

The European Microwave Association

This paper reports on historical prospective on the establishment and purpose of the European Microwave Association (EuMA). The EuMC was first established in the fall of every odd year, beginning in London in 1969, then Stockholm in 1971, and Brussels in 1973. Starting with Montreux in 1974, the EuMC became an annual event and was organized with the support of a professional conference manager and combined with an exhibition of manufacturers of microwave components, systems, and test equipment.

An investigation of bistatic calibration techniques

Several popular bistatic calibration techniques are investigated and comparisons made between the relative merits of the various techniques. The analysis addresses sensitivity to object alignment error, sensitivity to polarization impurity, and ease of implementation. Both theoretical concepts and practical considerations are discussed based on measurements accomplished at the European Microwave Signature Laboratory of the European Commission Joint Research Center, Ispra, Italy. This facility has the capability to produce far-field fully polarimetric precision bistatic measurements in a 30-cm-diameter quiet zone, suitable for comparing different calibration methods.

An investigation of bistatic calibration objects

Several popular metallic bistatic calibration objects are investigated, including a sphere, long and short cylinders, dihedral, trihedral, circular disk and wire mesh. Comparisons are made between the advantages and disadvantages of various objects for calibration. The analysis addresses sensitivity to object alignment error, availability of accurate radar cross section (RCS) calculations and bistatic RCS levels. Both theoretical concepts and practical considerations are discussed based on measurements accomplished at the European Microwave Signature Laboratory (EMSL) of the EC Joint Research Center (JRC) in Ispra, Italy. This facility has the capability to produce far-field fully polarimetric precision bistatic measurements in a 30 cm diameter quiet zone, suitable for comparing different calibration objects.

European Microwave Week 2005

European Microwave Week 2005

Fred Gardiol and P.J.B. Clarricoats Awarded European Microwave Association Distinguished Achievement Medals

Fred Gardiol and P.J.B. Clarricoats Awarded European Microwave Association Distinguished Achievement Medals

European Microwave Week 2005 - 3-7 Oct. - Paris, France

European Microwave Week 2005 - 3-7 Oct. - Paris, France

European Microwave Exhibition 2004

European Microwave Exhibition 2004