Design of a Ten-Way Conical Transmission Line Power Combiner

Villiers, Dirk I. L. de; Walt, P.W. van der; Meyer, P.

doi:10.1109/tmtt.2006.890065

Cited by 80 publications

(40 citation statements)

References 10 publications

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“…Each iteration consists of the optimization of the surrogate model, the evaluation of the fine model at the obtained parameter values, and the re-alignment of the coarse model with the fine model, generating a new surrogate model as outlined in (4) - (7). Note that while each iteration may consist of many coarse model evaluations, only a single fine model evaluation is required.…”

Section: Optimization Strategymentioning

confidence: 99%

“…Since the introduction of the modern personal computer and electromagnetic analysis software, the design of power combiners/dividers, especially axially symmetric types, has been facilitated by full-wave simulation [1][2][3][4][5][6][7][8][9]. However, the relatively high computational cost of full-wave simulations limits the amount of the parameter space that can be searched within a reasonable time and cost, thereby possibly limiting the performance that can be attained.…”

Section: Introductionmentioning

confidence: 99%

“…For example, circuit modelling can be used for parts of the device with known circuit models, and the rest modelled by full-wave simulation, as is done in [7,8]. This method reduces the size of the full-wave problem being solved, but it might not be straight-forward to divide the problem into appropriate parts, and full-wave parameter sweeps or optimization are still required to find optimal parameter values.…”

Section: Introductionmentioning

confidence: 99%

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Design of Axially Symmetric Power Combiners Using Surrogate Based Optimization

Beyers¹,

Villiers²

2016

Proceedings of the VII European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS Congress 2016)

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Abstract. The design and optimization of axially symmetric power combiners usually rely on computationally expensive full-wave simulations. Circuit models are often used to reduce the computational cost, however, full-wave parameter sweeps or optimization are usually still required. Surrogate based optimization utilizing circuit models offers an effective means to reduce the computational cost, since the circuit model can be aligned to the full-wave model, usually resulting in fewer full-wave simulations being required. This paper presents some of the recent advances in using Space Mapping, which is a surrogate based optimization technique, for the design and optimization of axially symmetric power combiners.

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Section: Optimization Strategymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Design of Axially Symmetric Power Combiners Using Surrogate Based Optimization

Beyers¹,

Villiers²

2016

Proceedings of the VII European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS Congress 2016)

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“…The conical transmission line implementation of N -way power combiners [10] is a relatively new technology offering some advantages over the more conventional coaxial line [12], [16] and radial line [9] structures. The conical combiners in [10] and [11] are designed using a hybrid technique where a minimal number of full-wave simulations are required: Even though conical transmission lines support a fundamental transverse electromagnetic (TEM) mode and may thus be designed by circuit theory, the peripheral ports of conical combiners that transition into the conical lines contain discontinuities where higher order modes are excited, and cannot be modeled by simple TEM transmission lines [17].…”

Section: Introductionmentioning

confidence: 99%

Compact Conical-Line Power Combiner Design Using Circuit Models

Beyers

Villiers

2014

IEEE Trans. Microwave Theory Techn.

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Abstract-A simple equivalent circuit model with empirical equations describing the peripheral feeding ports of conical line power combiners is presented. The model allows the entire structure to be designed using transverse electromagnetic circuit theory without the need for any full-wave simulations. A summary of the model extraction process is given and the accuracy of the proposed model is confirmed by favorable comparisons with full-wave simulations. The circuit based design method is used to design a compact conical line combiner showing measured performance similar to the current state of the art combiners in this technology, while being significantly smaller.

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“…Current available RF power levels cannot be achieved by a single solid-state device. Consequently, high-efficiency power combiners are required to generate high powers [1][2][3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Broadband Radial Waveguide Power Combiner With Improved Isolation Among Adjacent Output Ports

Sarhan¹,

Ghadimi²,

Hamidi³

et al. 2014

PIER C

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Abstract-An eight-way waveguide-based power combiner/divider is presented and investigated in the frequency range 7.5-10.5 GHz. A simple approach is proposed for design purposes. The measured combiner shows a good agreement between the simulated and measured results. Insertion loss is about −0.3 dB, return loss is less than −15 dB and isolation between adjacent output ports is better than −11 dB at 8.5 GHz and reaches about −14 dB at 9.5 GHz.

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Design of a Ten-Way Conical Transmission Line Power Combiner

Cited by 80 publications

References 10 publications

Design of Axially Symmetric Power Combiners Using Surrogate Based Optimization

Design of Axially Symmetric Power Combiners Using Surrogate Based Optimization

Compact Conical-Line Power Combiner Design Using Circuit Models

Broadband Radial Waveguide Power Combiner With Improved Isolation Among Adjacent Output Ports

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