Papers

Papers tagged with : Optimization

09
Oct
2017
Co-authors:
Massimiliano Simeoni / Benedetta Fiorelli

In an on-going TICRA/ESA activity new capabilities for GRASP are being developed. These will enable analysis and optimisation of reflector and feed systems in the final operational environment...

03
Oct
2017
Co-authors:
Eric Amyotte / Yves Demers / Giovanni Toso

Beam squint in single offset reflector antennas with circularly polarized feeds is well known. For applications where single offset reflectors operate in orthogonal circular polarizations in Tx/Rx...

12
Jul
2017

Surface shaping of reflector antennas for creating a contoured beam is an ubiquitous task in the design of modern communication satellites. In this paper, we highlight two major improvements to...

12
Jul
2017
Co-authors:
Giovanni Toso

The latest advances on the use of curved reflectarrays for telecommunication applications is presented in this paper. For contoured beam applications, the curvature of the reflectarray surface can...

21
Mar
2017
Co-authors:
Raymond Dickie, Paul Baine, John Montgomery, Robert Cahill, Manju Henry, Peter G. Huggard, and Giovanni Toso

The design of an aperiodic frequency selective surface (FSS) for compact quasi-optical networks is presented in this paper. Using a newly developed Physical Optics (PO) method in conjunction with...

20
Mar
2017
Co-authors:
Giovanni Toso

An investigation of curved contoured beam reflectarrays with reusable surface for multiple coverages is presented. The main advantage of curved reflectarrays over shaped reflectors is that they...

15
Nov
2016
Co-authors:
Massimiliano Simeoni, Giovanni Toso

This paper describes the design of high-performance contoured beam reflectarrays using a direct optimization technique with an improved optimization engine. In Kuband, curved reflectarrays allow...

01
Jul
2016
Co-authors:
Martin S. Andersen / Leo Emil Sokoler

Designing a contoured beam reflector or performing a direct optimization of a reflectarray requires a mathematical optimization procedure to determine the optimum design of the antenna. A popular...

01
Jul
2016

The number of main apertures needed to cover a full transmit/receive multiple spot beam mission can be reduced by using reflectarrays with array elements printed on a doubly curved surface. By...

12
Apr
2016

This paper describes a reflectarray concept that can produce a full dual-band (transmit/receive) multiple spot beam coverage in Ka-band using only two main apertures while maintaining single-feed-...

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