FEKO 5.4 Example 手册

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Example Guide

Share with you a very useful example guide for learning FEKO. Good for radiation problems. This software was originally implemented using MoM, afterwards, they incorporated several other hybrid approaches. Hope it helps you learn FEKO.

Introduction
1 Dipole example 1-1
1.1 Dipole . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.2 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
2 Dipole in front of a cube 2-1
2.1 Dipole and PEC cube . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.2 Dipole and lossy metal cube . . . . . . . . . . . . . . . . . . . . . . . 2-2
2.3 Dipole and dielectric cube . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2.4 Comparison of the results . . . . . . . . . . . . . . . . . . . . . . . . 2-3
3 RCS of a thin dielectric sheet 3-1
3.1 Dielectric sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3.2 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
4 RCS and near field of a dielectric sphere 4-1
4.1 Dielectric sphere . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.2 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
5 Shielding factor of a sphere with finite conductivity 5-1
5.1 Finite conductivity sphere . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5.2 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
6 Exposure of muscle tissue using MoM/FEMhybrid 6-1
6.1 Dipole and muscle tissue . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
6.2 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
7 A monopole antenna on a finite ground plane 7-1
7.1 Monopole on a finite ground . . . . . . . . . . . . . . . . . . . . . . . 7-1
7.2 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
8 Yagi-Uda antenna above a real ground 8-1
8.1 Antenna and ground plane . . . . . . . . . . . . . . . . . . . . . . . . 8-1
8.2 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3
July 2008 FEKO Examples Guide
CONTENTS ii
9 Pattern optimisation of a Yagi-Uda antenna 9-1
9.1 The antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1
9.2 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3
10 Microstrip patch antenna 10-1
10.1 Pin-fed, SEP model . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1
10.2 Pin-fed, multilayer Green’s function . . . . . . . . . . . . . . . . . . . 10-3
10.3 Edge-fed, multilayer Green’s function . . . . . . . . . . . . . . . . . . 10-4
10.4 Comparison of the results for the different models . . . . . . . . . . . 10-5
11 Proximity coupled patch antenna with microstrip feed 11-1
11.1 Circular patch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1
11.2 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-2
12 Dielectric resonator antenna on finite ground 12-1
12.1 DRA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-1
12.2 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-4
13 A Forked Dipole antenna 13-1
13.1 Forked dipole model . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-1
13.2 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-3
14 Different ways to feed a horn antenna 14-1
14.1 Wire feed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-2
14.2 Waveguide feed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-3
14.3 Aperture feed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-4
14.4 Comparison of the results for the different models . . . . . . . . . . . 14-4
15 A Microstrip filter 15-1
15.1 Microstrip filter on a finite substrate (FEM/MoM) . . . . . . . . . . 15-1
15.2 Microstrip filter on a finite substrate (SEP) . . . . . . . . . . . . . . 15-3
15.3 Microstrip filter on an infinite substrate . . . . . . . . . . . . . . . . . 15-5
15.4 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-6
16 Dipole in front of a UTD/PO plate 16-1
16.1 Dipole and a UTD plate . . . . . . . . . . . . . . . . . . . . . . . . . 16-1
16.2 Dipole and a PO plate . . . . . . . . . . . . . . . . . . . . . . . . . . 16-3
July 2008 FEKO Examples Guide
CONTENTS iii
16.3 Comparative results . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-4
17 A lens antenna with Geometrical optics for dielectrics 17-1
17.1 Creating the lens model . . . . . . . . . . . . . . . . . . . . . . . . . 17-1
17.2 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17-4
18 Calculating field coupling into a shielded cable 18-1
18.1 Dipole and ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-1
18.2 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-2
19 A magnetic-field probe 19-1
19.1 Dielectric sphere . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-1
19.2 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-2
20 S-parameter coupling in a stepped waveguide section 20-1
20.1 Waveguide step model . . . . . . . . . . . . . . . . . . . . . . . . . . 20-1
20.2 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-2
21 Using the MLFMM for electrically large models 21-1
21.1 Large trihedral . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-1
21.2 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-2
22 Antenna coupling on an electrically large object 22-1
22.1 Helicopter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22-1
22.2 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22-2
23 Antenna coupling calculation using ideal receiving antenna 23-1
23.1 The helix antenna in free space . . . . . . . . . . . . . . . . . . . . . 23-2
23.2 Using the helix antenna far-field pattern . . . . . . . . . . . . . . . . 23-3
23.3 The full model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23-5
23.4 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23-5
24 Using a point source and ideal receiving antenna 24-1
24.1 The horn antenna in free space . . . . . . . . . . . . . . . . . . . . . 24-1
24.2 Using the computed horn radiation pattern in a coupling calculation 24-2
24.3 The reference model . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24-2
24.4 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24-2
July 2008 FEKO Examples Guide
CONTENTS iv
25 Horn feeding a large reflector 25-1
25.1 MoM horn and PO reflector . . . . . . . . . . . . . . . . . . . . . . . 25-2
25.2 Aperture excitation and PO reflector . . . . . . . . . . . . . . . . . . 25-4
25.3 Spherical excitation and PO reflector . . . . . . . . . . . . . . . . . . 25-5
25.4 Comparative results . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25-6
26 Using a non-radiating network to match a dipole antenna 26-1
26.1 Dipole . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26-2
26.2 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26-2
27 Subdividing a model using non radiating networks 27-1
27.1 Feed network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27-1
27.2 Patch with non-radiating feed network . . . . . . . . . . . . . . . . . 27-3
27.3 Patch with radiating feed network . . . . . . . . . . . . . . . . . . . . 27-4
27.4 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27-5
28 Log periodic antenna 28-1
28.1 Log periodic dipole array . . . . . . . . . . . . . . . . . . . . . . . . . 28-1
28.2 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28-3
29 Periodic boundary conditions for FSS characterisation 29-1
29.1 Frequency selective surface . . . . . . . . . . . . . . . . . . . . . . . . 29-2
29.2 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29-3
30 Scattering width of an infinite cylinder 30-1
30.1 Infinite cylinder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-1
30.2 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-2
31 A TIMEFEKO example 31-1

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