Analysis and design of periodic structures by the MoM/BI-RME method
abstract This paper presents the recent advance of our activity in the field of frequency selecti... more abstract This paper presents the recent advance of our activity in the field of frequency selective surfaces (FSSs) for microwave and millimeter-wave applications. Both metal plates perforated periodically with holes (inductive FSSs) and periodic arrays of metal patches patterned on a dielectric substrate (capacitive FSSs) are presented.
Terahertz and Gigahertz Electronics and Photonics II (Proceedings Volume)
This paper reviews some recent developments of high-speed millimeter-wave photonic components and... more This paper reviews some recent developments of high-speed millimeter-wave photonic components and their application in millimeter-wave fiber-wireless systems. In particular, this paper is concerned with waveguide transceiver elements designed for simultaneous modulation and photodetection at mm-wave frequencies, where the transceiver concept is based upon electroabsorption in multiple-quantum wells.
Abstract This paper presents a novel approach for the direct determination of equivalent circuit ... more Abstract This paper presents a novel approach for the direct determination of equivalent circuit models of Substrate Integrated Waveguide (SIW) components. This approach is based on the full–wave analysis of SIW components by using the Boundary Integral–Resonant Mode Expansion (BI–RME) method, which provides the admittance matrix of the component in the form of a pole expansion in the frequency domain.
Abstract: This paper presents a novel approach for the analysis of the nonlinear circuits derived... more Abstract: This paper presents a novel approach for the analysis of the nonlinear circuits derived from the modeling of THz frequency multipliers. This method combines the rapidity of the Harmonic Balance technique with the reliability of the Genetic Algorithm. For this reason, it has been used within an fully automatic optimization procedure, which determines the maximum conversion efficiency attainable with a device for a given pump power level, as well as the optimal impedance needed at all the harmonic.
Abstract This paper presents a novel method for the characterization of metallo–dielectric electr... more Abstract This paper presents a novel method for the characterization of metallo–dielectric electromagnetic band–gap structures. Both the phase of the reflection coefficient and the dispersion diagram are calculated. The reflection coefficient is determined by using the MoM/BI–RME method, an efficient numerical technique formerly developed for the analysis of frequency selective surfaces.
Abstract This paper presents a novel method for the analysis of printed multilayered periodic str... more Abstract This paper presents a novel method for the analysis of printed multilayered periodic structures, used as frequency selective surfaces and mirrors in the microwave and millimeter wave range. Moreover, such structures represent the basic elements for the design of reflectarrays. The analysis is based on the formulation of an integral equation, solved by the Method of Moments with entire–domain basis functions.
ABSTRACT This paper presents a novel method for the analysis of dichroic plates, used for combini... more ABSTRACT This paper presents a novel method for the analysis of dichroic plates, used for combining signals at different frequencies in the beam–waveguide feeding system of large reflector antennas for deep–space applications. This method applies to the analysis of either single or multiple metal screens perforated periodically with holes. The holes perforating the metal screen may have an arbitrary cross–sections and, possibly, include steps.
In this paper we present a novel lumped element model of planar InGaAs/InAlAs/AlAs Heterostructur... more In this paper we present a novel lumped element model of planar InGaAs/InAlAs/AlAs Heterostructure Barrier Varactors (HBVs) on InP substrate. HBVs with 30 and 40 đm anode diameters were fabricated as coaxial-type conŊguration to check the wafer quality and extract the intrinsic parameters. Planar HBVs mounted on a coplanar waveguide were fabricated and measured in the 0.5 {26.5 GHz frequency range, at diŪerent bias points up to 10 V.
Abstract A novel class of frequency selective surfaces (FSSs), intended for harmonic suppression ... more Abstract A novel class of frequency selective surfaces (FSSs), intended for harmonic suppression in sub-mm wave frequency multipliers, is proposed and experimentally verified. These FSSs consist of two-dimensional aperture arrays, made from micro-structured aluminum on electrically thick, high-resistivity silicon substrates. This technique leads to very good mechanical stability, low insertion loss, and permits to manufacture the structures by using standard processes available from the semiconductor industries.
Abstract This paper presents a novel method for the characterization of uniplanar electromagnetic... more Abstract This paper presents a novel method for the characterization of uniplanar electromagnetic band-gap structures, which requires the calculation of the dispersion diagram of the guided modes and the phase of the reflection coefficient under planewave illumination. The reflection coefficient is determined by using the MoM/BI-RME method. The same method is adopted in conjunction with a new technique for the efficient calculation of the dispersion diagram.
Abstract This paper describes the effect of ohmic and dielectric losses in printed reflectarray e... more Abstract This paper describes the effect of ohmic and dielectric losses in printed reflectarray elements. An RLC lumped-element model is derived, where the values of parameters are obtain via a full-wave analysis of the structure in a few frequency points. This model permits a wideband representation of the frequency response of the reflectarray element, which is in excellent agreement with the full wave simulations.
ABSTRACT—In this paper, we present an eflicient algorithm for the analysis of Frequency Selective ... more ABSTRACT—In this paper, we present an eflicient algorithm for the analysis of Frequency Selective Surfaces, which consists of a periodic array of arbitrarily shaped apertures in a conductive screen. The eflectiveness of our algorithm strongly depends on the application of the Boundary Integral—Resonant Mode Expansion (BI—RME) method. The computational efliciency and the flexibility of the method are discussed through some examples.
Abstract Substrate-integrated waveguide (SIW) technology represents an emerging and very promisin... more Abstract Substrate-integrated waveguide (SIW) technology represents an emerging and very promising candidate for the development of circuits and components operating in the microwave and millimetre-wave region. SIW structures are generally fabricated by using two rows of conducting cylinders or slots embedded in a dielectric substrate that connects two parallel metal plates, and permit the implementation of classical rectangular waveguide components in planar form, along with printed circuitry, active devices and antennas.
Abstract: This paper presents a novel method for the element characterization of printed reflecta... more Abstract: This paper presents a novel method for the element characterization of printed reflectarray antennas. Their characterization requires the calculation of the phase of the reflection coefficient versus the patch dimension (phase diagram), when the structure is illuminated by a uniform plane wave.
This final report collects the most significant results of my research activity in the framework ... more This final report collects the most significant results of my research activity in the framework of the\ Dottorato di Ricerca in Ingegneria Elettronica ed Informatica", from November 1997 to October 2000. During this period, I worked at the Microwave Lab, Department of Electronics of the University of Pavia, Italy, in the research group headed by Prof. Giuseppe Conciauro. The topics of my research concern the electromagnetic modeling and the design of quasi {optical structures, operating in the mm and sub {mm wave range.
A novel wearable substrate integrated waveguide antenna fabricated entirely from textile material... more A novel wearable substrate integrated waveguide antenna fabricated entirely from textile materials is presented. The cavity-backed slot antenna operates in the 2.45 GHz industrial, scientific and medical band, for short range communication between rescue workers. A prototype of the antenna was fabricated and tested: good performance was obtained in terms of input matching and radiation pattern.
Abstract: This work presents a study of the use of substrate integrated waveguide (SIW) cavities ... more Abstract: This work presents a study of the use of substrate integrated waveguide (SIW) cavities in the design of microwave oscillators and their effect on phase noise performance. Harmonic balance (HB) simulation and electromagnetic (EM) simulation are used to design a 12 GHz feedback oscillator and a 12 GHz reflection oscillator. Prototypes have been implemented and measured in order to investigate the effects of using different SIW cavities on the phase noise performance of oscillator circuits.
Abstract: This paper presents an optimisation procedure for the automatic design of frequency sel... more Abstract: This paper presents an optimisation procedure for the automatic design of frequency selective surfaces. The optimisation tool is based on the genetic algorithm, and embeds an analysis method we recently developed. The implementation of the optimisation code and its application are described, and the major advantages of the method are discussed. An example is also reported, where the code is applied to the optimisation of frequency selective surfaces with circular holes.
SUMMARY This paper will present the results of an architectural study into future ESA Deep-Space ... more SUMMARY This paper will present the results of an architectural study into future ESA Deep-Space ground stations. The objective of the project is to study and investigate solutions for building ground stations for future Deep Space missions for exploration of the outer reaches of the solar system. The study is addressing not only the engineering challenges associated with the various options, but also the cost, with a clear goal of identifying the most cost effective approach.
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Papers by Maurizio Bozzi