Scalable Multifunction Active Phased Array Systems: From concept to implementation; 2006BU1-IS

The SMRF (Scalable Multifunction Radio Frequency Systems) concept has been launched in the WEAG (Western European Armament Group) context, recently restructured into the EDA (European Defence Agency). A derived concept is introduced here, namely the SMRF-APAS (Scalable Multifunction Radio Frequency-Active Phased Array System) concept. In this...

Application of EBG Structures at Sub-Array Level

Low efficiency and pattern degradation are specific problems encountered in phased array designs based on integrated technology, as for example used in lowprofile radar applications. These problems are largely due to the excitation of surface waves (SW). It was demonstrated in earlier work that Electromagnetic Band Gap (EBG) technology can...

On the use of planar EBGs in One Dimensional (1D) scanning printed arrays

In a companion paper [1] presented in this same conference, the use of Planar Circularly Symmetric (PCS) Electromagnetic Band-Gap (EBG) structures for optimizing the performances of single antenna elements is discussed. A completely planar antenna with 20% of bandwidth which does not suffer from surface wave effects is presented. The key...

Phased arrays of rectangular apertures on conformal cylindrical surfaces: A multimode equivalent network approach

In this paper, we present an efficient integral equation formulation based on a multimode equivalent network (MEN) approach for the analysis of phased arrays on cylindrical surfaces using open-ended waveguide radiators. In addition to theory, experimental data are also presented showing very good agreement with simulated results. © 2004 IEEE.

Optimal choice of the E.M. expansion for arbitrary shaped aperture/patch FSSs in planar phased arrays

In this paper, we present the analysis of frequency selective surfaces (FSS), which comprise periodic arrays of patches or apertures in conducting screens, by means of the multimode equivalent network (MEN) approach. The unknown quantities are expanded in terms of piecewise sinusoidal/linear expanding functions or in terms of full domain basis...

Phased arrays of compact waveguide radiators and frequency selective surfaces: A multi-mode equivalent network approach

The current trend for radar array antennas requires increased integration, as well as large bandwidth, for multifunction systems, and frequency/angular selectivity properties for structural integration on military platforms, like ships and aircrafts, with low radar cross section (RCS). We have presented a review of the potentialities offered by...

A closely spaced waveguide phased array integrated with a frequency selective surface. Modeling and design

In this paper the mathematical formulation for patch FSS integrated with a waveguide array has been presented. This formulation has been implemented in a tool that is able to analyze various configurations of FSS integrated antennas, both screen or patch based, having arbitrary layout and element shape and different periodicity for the FSSs and...

Phased array antenna integrated with a frequency selective surface: Theory and experiments

A modeling tool is described to characterize the array antennas integrated with frequency selective surfaces by means of a multimode equivalent network approach applied to infinite periodic structures. The theoretical formulation of the problem is presented in this paper together with the numerical results for an array of dielectric loaded...

CAD of coaxially end-fed waveguide phased-array antennas

An alternative configuration for an infinite coaxially end-fed waveguide phased-array antenna is explored. In the proposed configuration, the integration of the end-fed launcher and the output waveguide, rather than the waveguide in itself, acts as a basic radiator. This allows the design of more compact antenna elements. In order to analyze and...

PHASIM, an advanced phased array antenna software simulator

A sophisticated phased array simulator software package for the design and analysis of planar phased array antennas is presented. This package can accurately simulate the far-field characteristics of a large variety of planar phased array configurations in both the frequency and time domain. The simulator is coded in MATLAB version 5.3. Using...

PHASIM, an advanced phased array antenna software simulator

A sophisticated phased array simulator software package for the design and analysis of planar phased array antennas is presented. This package can accurately simulate the far-field characteristics of a large variety of planar phased array configurations in both the frequency and time domain. The simulator is coded in MATLAB version 5.3. Using...

PHASIM, a sophisticated phased array antenna software simulator implemented in MATLAB 5.2

A sophisticated phased array simulator software package for the design and analysis of planar phased array antennas is presented. This simulator is coded in MATLAB version 5.2. Using MATLAB, numerical engineering problems can be solved in a fraction of time of time required by programs coded in FORTRAN or C. This paper addresses an assessment of...

CAD of waveguide array antennas based on "filter" concepts

In this paper an alternative approach for the design of open-ended waveguide array antennas is presented. The approach is based on microwave filter concepts. The exploitation of this alternative viewpoint has been made possible by the availability of a very efficient computer-aided design (CAD) tool which is based on a full-wave modal analysis...

High Resolution Processing with an Active Phased Array SAR

The Dutch PHARUS system is a polarimetric active phased array SAR capable of performing advanced SAR modes. Advanced SAR modes that are being investigated are: spotlight SAR, sliding spotlight SAR, stepped frequency SAR and interferometric SAR. The flight experiments and automatic beam steering implementations are carried out in co-operation...

An Efficient Scheduling Algorithm for a Multifunction Radar

The new generation of air defence frigates has to be equipped with a high performance sensor suite to cope with the threat in future maritime scenarios. A multifunction radar (MFR) with a single rotating or multiple fixed phased array antennas is often the key element in this sensor suite because it can perform not only surveillance functions...

Efficient scheduling algorithm for a multifunction radar

The new generation of air defence frigates has to be equipped with a high performance sensor suite to cope with the threat in future maritime scenarios. A multifunction radar (MFR) with a single rotating or multiple fixed phased array antennas is often the key element in this sensor suite because it can perform not only surveillance functions...