Antennas and Propagation: Symposium Digest, Volumes 1-2 |
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Page 55
... Fresnel transform relationship between the Fresnel region pattern and the aperture distribution , analogous to the Fourier transform relationship for Fraunhofer region patterns . Both the direct and inverse Fresnel transforms are shown ...
... Fresnel transform relationship between the Fresnel region pattern and the aperture distribution , analogous to the Fourier transform relationship for Fraunhofer region patterns . Both the direct and inverse Fresnel transforms are shown ...
Page 56
... FRESNEL TRANSFORM . The importance of the Fresnel transform of f ( x ) L / 2 Fo ( pu ) = e -jk ( L / 2 ) 2u2 / 2p 12p [ f ( x ) e3k ( x2 / 2p ) e- jkxudx = Fr [ f ( x ) ] ( 4 ) -L / 2 is that it can be represented in terms of a Fourier ...
... FRESNEL TRANSFORM . The importance of the Fresnel transform of f ( x ) L / 2 Fo ( pu ) = e -jk ( L / 2 ) 2u2 / 2p 12p [ f ( x ) e3k ( x2 / 2p ) e- jkxudx = Fr [ f ( x ) ] ( 4 ) -L / 2 is that it can be represented in terms of a Fourier ...
Page 57
... Fresnel transform can be derived from those of the Fourier transform . SUMMARY . A new Fresnel region approximation has been presented which is valid over all space at distances greater than twice the aperture length . This ...
... Fresnel transform can be derived from those of the Fourier transform . SUMMARY . A new Fresnel region approximation has been presented which is valid over all space at distances greater than twice the aperture length . This ...
Contents
Théorie électromagnétique | 45 |
Phased Arrays I | 51 |
Printed and Microcircuit Antennas | 69 |
41 other sections not shown
Common terms and phrases
adaptive array amplitude analysis angle AP-S aperture approximation axial ratio azimuth bandwidth beam beamwidth calculated circuit circular polarization coefficients computed configuration corrugated cross-polar curved cylindrical Dept dielectric dielectric constant diffraction dipole direction distribution dual E-plane edge effects electric field Electrical Engineering electromagnetic element pattern equation error excitation feed Fourier frequency gain geometry Green's function ground plane H-plane horn IEEE IEEE Trans incident input impedance integral Laboratory length linear lossy magnetic main reflector matrix measured method method of moments microstrip antennas mode obtained offset parameters patch performance phased array planar plane wave probe problem propagation radar radiation pattern radome rectangular reflector antenna region resonant scan scattering shown in Figure sidelobe level signal slot solution space spherical structure struts subarray subreflector surface taper technique theory tion transmission values vector VSWR waveguide wavelength wire