Fast EM CAD and optimization of shaped offset reflectors including feeds

• Fast CAD and optimization of all kind of offset reflector-antennas + feed-networks. Such as: •Dual-reflector antennas with shaped sub- and main reflectors, •Cassegrain-, Gregorian-reflectors, •Shaped reflector antennas with elliptical and user-defined arbitrary contours, •Shaped reflector antennas with lossy dielectrics (absorbers), •Shaped reflector antennas with mounting bars, struts, etc.

• Rigorous inclusion of feed-networks, such as polarizers, OMTs, filters, tapers, etc.

• WASP-NET internal cross-check verification by independent different solvers

• Convenient user-friendly design by wizards: Horn-wizard, single- / dual-reflector antenna wizard

Cassegrain 45-lambda offset reflector antenna (Granet)

*Benchmarks: Approximate seconds per frequency (abbreviated as “fr” or “fp) on up-to-date PCs

• Convenient user-friendly Designer Data Base with fully optimized ready to use Design Examples, which can be scaled to desired Frequencies, modified and re-optimized to desired Specifications

Selected Shaped Reflector Design Examples

Shaped Gregorian offset reflector antennas (shaped main- and sub-reflector), 100 lambda

Single offset reflector, elliptical contour for flat shape, elliptical horn with OMT

Large offset reflector (150 lambda), Potter horn with mode-suppressor

Shaped Gregorian offset reflector antennas

(Shaped main- and sub-reflector), 100 lambda,

fast hybrid MoM-SBR-PTD method

Shaped Gregorian offset reflector antennas (shaped main- and sub-reflector), 100 lambda,

inclusion of struts

Features in addition to extremely high Optimization Speed

Direct Inclusion of Feed-Networks

Gregorian offset reflector antenna with complete feed-network (OMT, polarizer, taper), 100 lambda

Features in addition to extremely high Optimization Speed

Extremely fast hybrid MoM-SBR-PTD method

Features in addition to extremely high Optimization Speed

Inclusion of struts

• Direct optimization to pattern goal functions, such as 29-25*log(theta)

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WASP-NET’s wide application range for accurate, fast EM CAD and optimizations of all kind of passive microwave components / antennas proves - due to WASP-NET’s generality and flexibility - to be practically unlimited.

WASP-NET utilizes for radiating structure parts the rigorous method-of-moments (MoM) in all advanced fast MoM-algorithm forms. WASP-NET’s powerful and general hybrid EM CAD engine goes also in this way far beyond applying approximate methods for apertures, such as spherical mode-expansions.
WASP-NET’s pioneering efficient hybrid multi-solver EM CAD engine involves all proven solvers (MM / MoM / FEM / FD / FE-BI / PTD / PO / SBR-PTD). WASP-NET utilizes automatically the most efficient solver for appropriate sub-parts of a structure. This unique hybrid combination of solvers for calculating microwave structures achieves high EM CAD optimization speed while maintaining full-wave EM accuracy as well as full 3D generality and flexibility.
WASP-NET provides full flexibility of 3D solvers combined with high efficiency. Standard building blocks, such as steps and irises etc. are available as catalog elements. WASP-NET is, however, not limited by or restricted to catalog elements. User-defined arbitrary 3D structures or parts thereof are conveniently created in WASP-NET by a user-friendly graphic 3D modeler or by text editors. Geometry parameters are fully parametrized for fast direct EM based optimizations.
Field patterns can be directly optimized including shape profile functions.
3D structures can be exported and, in particular, also be imported using standard formats (e.g. STEP, SAT, BREP, IGES). In this way, imported structures can be de-composed and parametrized for fast optimizations.
WASP-NET’s EM CAD engine needs for the rigorous calculation of antenna components merely a couple of seconds up to some tens of seconds on state-of-the-art PCs. Shown speed benchmarks (per frequency point (fr.)) demonstrate WASP-NET’s high efficiency. Highest possible speed is particularly important when optimizing structures.