Design of transmission line filters and matching circuits using genetic algorithms

Sanada, Hirofumi; Ito, Hiroaki; Takezawa, Megumi; Watanabe, Kazuhiro

doi:10.1002/tee.20213

Cited by 9 publications

(5 citation statements)

References 10 publications

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“…Enumerating various combinations of parameter values becomes unwieldy, necessitating an extensive number of enumerations, thereby constraining efficiency. As an optimization algorithm [ 36 ], the genetic algorithm excels in discerning optimal solutions amid intricate and diverse conditions [ 37 ]. Consequently, this article employs the genetic algorithm to efficiently and swiftly identify optimal parameter combinations, innovatively applying it to the parameter optimization of DFEIM technology.…”

Section: Discussionmentioning

confidence: 99%

Dual-Frequency Impedance Matching Network Design Using Genetic Algorithm for Power Ultrasound Transducer

Huang,

Li,

et al. 2024

Micromachines

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Dual-frequency ultrasounds have demonstrated significant potential in augmenting thermal ablation efficiency for tumor treatment. Ensuring proper impedance matching between the dual-frequency transducer and the power amplifier system is imperative for equipment safety. This paper introduces a novel dual-frequency impedance matching network utilizing L-shaped topology and employing a genetic algorithm to compute component values. Implementation involved an adjustable capacitor and inductor network to achieve dual-frequency matching. Subsequently, the acoustic parameters of the dual-frequency HIFU transducer were evaluated before and after matching, and the effects of ultrasound thermal ablation with and without matching were compared. The proposed dual-frequency impedance matching system effectively reduced the standing wave ratio at the two resonance points while enhancing transmission efficiency. Thermal ablation experiments with matching circuits showed improved temperature rise efficiencies at both frequencies, resulting in an expanded ablation zone. The dual-frequency impedance matching method significantly enhances the transmission efficiency of the dual-frequency ultrasound system at two operational frequencies, thereby ensuring equipment safety. It holds promising prospects for application in dual-frequency ultrasound treatment.

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Section: Discussionmentioning

confidence: 99%

Dual-Frequency Impedance Matching Network Design Using Genetic Algorithm for Power Ultrasound Transducer

Huang,

Li,

et al. 2024

Micromachines

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“…Mostly, work had been done on the FODs which can operate hardly up to a frequency of few hundred MHz. So, the benefits of fractional calculus discussed so far can be taken to GHz range by using various techniques for the design and implementation of microwave filters [27][28][29][30][31][32]. In [27], compact dual-band bandpass filters using microstrip lines were designed using the hybrid-coded GA. Sanada et al [28] used the GA method for designing transmission line filters with open-circuited stubs in shunt configuration and continuously varying transmission line matching circuits.…”

Section: Introductionmentioning

confidence: 99%

“…So, the benefits of fractional calculus discussed so far can be taken to GHz range by using various techniques for the design and implementation of microwave filters [27][28][29][30][31][32]. In [27], compact dual-band bandpass filters using microstrip lines were designed using the hybrid-coded GA. Sanada et al [28] used the GA method for designing transmission line filters with open-circuited stubs in shunt configuration and continuously varying transmission line matching circuits. Based on equal-length non-uniform coupled lines, a tripleband bandpass microwave filter was proposed by evaluating the system function of the filter in the Z-domain using discrete-time techniques and chain scattering matrices of transmission line elements [29].…”

Section: Introductionmentioning

confidence: 99%

Design and implementation of fractional‐order microwave differentiator

Gupta

Upadhyay

2018

IET Microwaves, Antennas & Propagation

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The new design of a fractional‐order microwave differentiator is proposed. It is first of its kind and uses short‐circuited stub and transmission line sections to emulate the behaviour of an ideal fractional‐order differentiator. Least mean square error‐based objective function is formulated to obtain the transfer function of the proposed design, using the chain scattering parameters of line elements in the Z‐domain. During the optimisation process, impedance values of equal‐electrical‐length line elements are considered in the range 10–150 Ω, such that they are practically realisable on the microstrip format. The structure is implemented on the FR4 substrate with permittivity of 4.4 having 1.6 mm thickness. The measured result for the magnitude response of the transmission coefficient is found to be in good agreement with ideal one in the operating frequency range from 0.8 to 6.6 GHz.

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“…Many kinds of algorithms such as conjugate gradient method, annealing algorithm, and genetic algorithm (GA) are studied to enhance the efficiency and performance of the filter synthesis [9][10][11][12]. The powerful heuristic of the GA is widely used in science and engineering problems.…”

Section: Introductionmentioning

confidence: 99%

“…And it is particularly effective to solve complex electromagnetic problems. In [11], Sanada et al presented a method for designing transmission line filters with shunt-connected open circuit stubs and matching circuits with continuously varying nonuniform transmission lines using GA. In [12], Nishino and Itoh, proposed a scheme to describe the physical parameters and topology of the circuit composed of microstrip-line segments and then integrated this representation scheme with conventional GA.…”

Section: Introductionmentioning

confidence: 99%

A Novel Approach to Design of Microstrip Uwb Bandpass Filter Using Modified Genetic Algorithm

Peng¹,

Zhao²,

Zhang³

et al. 2014

PIER M

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Abstract-A novel approach to design microstrip ultra-wideband (UWB) bandpass filter (BPF) using modified genetic algorithm (MGA) is proposed in this paper. To achieve high efficiency and accuracy, conventional GA is modified. By improving the fitness evaluation, selection, crossover, and mutation, the two possible drawbacks of conventional GA, i.e., slow rate of convergence and local-best solution, are overcome. The modified genetic algorithm is then applied to simultaneously search for the appropriate circuit topology and the corresponding electrical parameters with UWB characteristic. To demonstrate the effectiveness of the novel approach, a new microstrip UWB BPF is designed and fabricated. Measurement results agree well with the design index and full-wave EM simulated results.

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Design of transmission line filters and matching circuits using genetic algorithms

Cited by 9 publications

References 10 publications

Dual-Frequency Impedance Matching Network Design Using Genetic Algorithm for Power Ultrasound Transducer

Dual-Frequency Impedance Matching Network Design Using Genetic Algorithm for Power Ultrasound Transducer

Design and implementation of fractional‐order microwave differentiator

A Novel Approach to Design of Microstrip Uwb Bandpass Filter Using Modified Genetic Algorithm

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