Beam diffraction by planar and parabolic reflectors

Suedan, G.A.; Jull, E.V.

doi:10.1109/8.81466

Cited by 44 publications

(19 citation statements)

References 11 publications

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“…In this paper, we analyze a two-dimensional (2-D) problem of this kind by means of a rigorous integral equation approach applied to the case of H-polarization mode. The method of solution is based on the combination of the complex source-point (CSP) technique [10], Green's function technique, and the method of regularization (MoR), and is a further development of our previous work [11]. The case of E-polarization can be considered in a similar way.…”

Section: Introductionmentioning

confidence: 99%

Numerical optimization of a cylindrical reflector-in-radome antenna system

Yurchenko

Altintas

Nosich

1999

IEEE Trans. Antennas Propagat.

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Cataloged from PDF version of article.Accurate numerical optimization based on the rigorous\ud solution of the integral equation using the method of\ud analytical regularization is performed for the cylindrical reflector\ud antenna in a dielectric radome. It is shown that the multiple\ud scattering in this system is more significant for the optimum\ud radome design than any nonplane-wave effects or the curvature of\ud the radome. We claim that, although the common half-wavelength\ud design is a good approximation to avoid negative effects of the\ud radome (such as the loss of the antenna directivity), one can, by\ud carefully playing with the radome thickness, its radius, reflector\ud location, and the position of the feed, improve the reflector-inradome\ud antenna performance (e.g., increase the directivity) with\ud respect to the same reflector in free-space

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Section: Introductionmentioning

confidence: 99%

Numerical optimization of a cylindrical reflector-in-radome antenna system

Yurchenko

Altintas

Nosich

1999

IEEE Trans. Antennas Propagat.

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“…(kjr 0r cs j) (7) wherer cs =r 0 +ib,r 0 is the real position vector and ib is the complex vector, which characterizes the beam direction and its width-see [2], [3], [13]- [18]. The right-hand part of (3) …”

Section: Formulationmentioning

confidence: 99%

“…Then the reflection and diffraction coefficients appear in the ray format and further can be used in solving more complicated geometries. E.g., a 2-D reflector illuminated with a directive feed was modeled in [2] with QO techniques in the form of the uniform theory of diffraction and aperture integration, combined with the complex source point (CSP) method [3]. In [4], the scattering from a 2-D circular strip was treated analytically with the Wiener-Hopf method assuming the size of the strip to be asymptotically large.…”

Section: Introductionmentioning

confidence: 99%

Analysis of an Arbitrary Conic Section Profile Cylindrical Reflector Antenna, H-Polarization Case

Oğuzer

Nosich

Altintas

2004

IEEE Trans. Antennas Propagat.

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------------H-plane co-polarization, H-plane cross-polarization, ------------E-plane co-polarization, E-plane cross-polarization.was 9.4 dBi within the pass band. The radiation patterns were stable and the maximum cross-polarization level of the antenna was about 0 18 dB. REFERENCES Analysis of an Arbitrary Conic Section Profile Cylindrical Reflector Antenna, H-Polarization CaseTaner Oguzer, Alexander I. Nosich, and Ayhan Altintas Abstract-Two-dimensional scattering of waves by a perfectly electric conducting reflector having arbitrary smooth profile is studied in the H-polarization case. This is done by reducing the mixed-potential integral equation to the dual-series equations and carrying out analytical regularization. To simulate a realistic primary feed, directive incident field is taken as a complex source point beam. The proposed algorithm shows convergence and efficiency. The far field characteristics are presented for the reflectors shaped as quite large-size curved strips of elliptic, parabolic, and hyperbolic profiles.

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“…A free space analysis of the 2D reflector antenna system is performed by combining the MoR technique with the complex source point (CSP) method in [13]. Previously the 2D cylindrical reflector antenna was simulated by combining the high frequency ray techniques (AI, UTD) and CSP method in [14]. Therefore the work in [13] was a numerically accurate solution of the same problem.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Nonconcentric Radome-Enclosed Cylindrical Reflector Antenna System, E-Polarization Case

Oğuzer¹,

Altintas²

2005

Journal of Electromagnetic Waves and Applications

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Abstract-Two-dimensional (2-D) radiation of a directive complex line source is analyzed in the presence of a perfectly conducting (PEC) reflector antenna system and nonconcentrically located dielectric radome. Similar problem was studied in the literature by using method of regularization and Green's function formulation for the Hpolarization case. Here the same techniques are used for E-polarization case but in this case the scattered part of the Green's function is computed by using an FFT based algorithm. This provides us to solve the larger geometries accurately in reasonable computer times. So this approach can be considered as another alternative for the analysis of the E-polarized radome-enclosed reflector antenna system. Various numerical results are presented to support the convergence and accuracy of the technique and at the same time these results can be considered as reference data.

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Beam diffraction by planar and parabolic reflectors

Cited by 44 publications

References 11 publications

Numerical optimization of a cylindrical reflector-in-radome antenna system

Numerical optimization of a cylindrical reflector-in-radome antenna system

Analysis of an Arbitrary Conic Section Profile Cylindrical Reflector Antenna, H-Polarization Case

Analysis of the Nonconcentric Radome-Enclosed Cylindrical Reflector Antenna System, E-Polarization Case

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