Analysis of Large Microstrip-Fed Tapered Slot Antenna Arrays by Combining Electrodynamic and Quasi-Static Field Models

Maaskant, Rob; Ivashina, Marianna; Iupikov, Oleg; Redkina, E.A.; Kasturi, S.; Schaubert, D.H.

doi:10.1109/tap.2011.2122213

Cited by 32 publications

(23 citation statements)

References 27 publications

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“…For complex-shaped and electrically large antennas, such as the wideband tapered slot antenna array feeds [13], it becomes necessary to use both memory-and time-efficient methods, such as the CBFM. The CBFM solves the current I f n+1 through the following set of equations:…”

Section: Iterative Cbfm-po Formulationmentioning

confidence: 99%

“…Fig. 1), requires a modeling approach for the entire feed-reflector structure accounting for the array mutual coupling and the multiple scattering effects between the reflector and the feed, whose aperture diameter can be in the order of several wavelengths for multibeam applications [12], [13]. These effects give rise to a ripple in the antenna impedance and radiation characteristics over frequency leading to impedance mismatch effects and a periodically perturbed beam shape [14]- [18].…”

Section: Introductionmentioning

confidence: 99%

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Fast and Accurate Analysis of Reflector Antennas With Phased Array Feeds Including Multiple Reflections Between Feed and Reflector

Iupikov

Maaskant

Ivashina

et al. 2014

IEEE Trans. Antennas Propagat.

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Abstract-Several electrically large Phased Array Feed (PAF) reflector systems are modeled to examine the mechanism of multiple reflections between parabolic reflectors and low-and highscattering feeds giving rise to frequency-dependent patterns and impedance ripples. The PAF current is expanded in physics-based macro domain basis functions (CBFs), while the reflector employs the Physical Optics (PO) equivalent current. The reflector-feed coupling is systematically accounted for through a multiscattering Jacobi approach. An FFT expands the reflector radiated field in only a few plane waves, and the reflector PO current is computed rapidly through a near-field interpolation technique. The FEKO software is used for several cross validations, and the convergence properties of the hybrid method are studied for several representative examples showing excellent numerical performance. The measured and simulated results for a 121-element Vivaldi PAF, which is installed on the Westerbork Synthesis Radio Telescope, are in very good agreement.Index Terms-phased array feeds, radio astronomy, method of moments, characteristic basis function method, physical optics.

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Section: Iterative Cbfm-po Formulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fast and Accurate Analysis of Reflector Antennas With Phased Array Feeds Including Multiple Reflections Between Feed and Reflector

Iupikov

Maaskant

Ivashina

et al. 2014

IEEE Trans. Antennas Propagat.

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“…Hence, it is natural to also let a plane-wave spectrum (PWS) be incident on each subarray for generating the initial set of CBFs. Although this is an obvious choice for scattering problems, antenna array problems have been analyzed successfully using the PWS-generated CBFs as well, both for the receive and transmit cases [23].…”

Section: Generation Of Cbfsmentioning

confidence: 99%

Fast Analysis of Periodic Antennas and Metamaterial-Based Waveguides

Maaskant

2013

Computational Electromagnetics

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“…The feed boards of the antenna elements are modelled through quasi-static field models, i.e., through transmission line models [3]. The coupling between the microstrip line and the slotline of each antenna element is modelled by a transformer.…”

Section: Modellingmentioning

confidence: 99%

Analysis of the EMBRACE aperture array antenna by the characteristic Basis Function Method

Arts

Maaskant

Kant

2011

2011 International Conference on Electromagnetics in Advanced Applications

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-This paper describes the use of the Characteristic Basis Function Method for the simulation of large phased array antennas for radio astronomy. It will be shown how the antenna effective area and the receiver noise temperature depend on array size. Also the receiving sensitivity A ef f /Tsys normalised with respect to the physical area of the array will be shown for different array sizes and scan angles.

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Analysis of Large Microstrip-Fed Tapered Slot Antenna Arrays by Combining Electrodynamic and Quasi-Static Field Models

Cited by 32 publications

References 27 publications

Fast and Accurate Analysis of Reflector Antennas With Phased Array Feeds Including Multiple Reflections Between Feed and Reflector

Fast and Accurate Analysis of Reflector Antennas With Phased Array Feeds Including Multiple Reflections Between Feed and Reflector

Fast Analysis of Periodic Antennas and Metamaterial-Based Waveguides

Analysis of the EMBRACE aperture array antenna by the characteristic Basis Function Method

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