A Novel Multiobjective Taguchi's Optimization Technique for Multibeam Array Synthesis

Pelosi, Giuseppe; Selleri, Stefano; Taddei, Ruggero

doi:10.1002/mop.27705

Cited by 22 publications

(10 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In literature, the conditions for exact phase progression and power distribution are imposed at the central frequency via analytic formulas. Here, due to the wide‐band goal of the design, a strategy based on automatic optimisation must be exploited, [21, 22]. Ideally, the modules of four transmission parameters,

| {\hat{S}}_{n, 0} |

, should be

\frac{1}{2}

, and the incremental phase

{\hat{ϕ}}_{n + 1, 0} - {\hat{ϕ}}_{n, 0}

, should be equal to

π / 2

.…”

Section: Network Designmentioning

confidence: 99%

Circularly polarised sequential array with enhanced gain and bandwidth for applications in C ‐band

Maddio¹,

Pelosi²,

Selleri³

2020

IET Microwaves, Antennas & Propagation

Self Cite

View full text Add to dashboard Cite

| {\hat{S}}_{n, 0} |

, should be

\frac{1}{2}

, and the incremental phase

{\hat{ϕ}}_{n + 1, 0} - {\hat{ϕ}}_{n, 0}

, should be equal to

π / 2

.…”

Section: Network Designmentioning

confidence: 99%

Circularly polarised sequential array with enhanced gain and bandwidth for applications in C ‐band

Maddio¹,

Pelosi²,

Selleri³

2020

IET Microwaves, Antennas & Propagation

Self Cite

View full text Add to dashboard Cite

“…Exploiting the parametric analysis in Section 2.2, it is quite easy to design a filter centered at the desired operation frequency. Furthermore, with the latter addition of interconnecting lines, the set of parameters is adequate to perform a final tuning with a multiobjective optimization …”

Section: Experimental Validationmentioning

confidence: 99%

“…Furthermore, with the latter addition of interconnecting lines, the set of parameters is adequate to perform a final tuning with a multiobjective optimization. 12,13 Figure 7 shows three prototypes printed by photoetching procedure on a commercial substrate (ε r = 3.75, tan δ = 0.01, and thickness = 1.6 mm). The center frequencies for the three devices are 5.0, 5.4, and 5.8 GHz, respectively.…”

Section: Experimental Validationmentioning

confidence: 99%

Quasi‐elliptical band‐pass filters based on compact spiral resonators for C‐band applications

Cidronali

Collodi

Maddio

et al. 2019

Micro & Optical Tech Letters

Self Cite

View full text Add to dashboard Cite

This letter proposes a quasi‐elliptical passband filter in via‐less microstrip technology. The filter is based on the Archimedean spiral, enabling a compact and low‐loss response with sharp transitions to stop bands. The developed filters fabricated on a commercial substrate, present losses below 2 dB within a 3 dB bandwidth of 500 MHz, and isolation exceeding 20 dB. Its extremely compact dimension, about 0.018 λ02, and the low‐cost of fabrication, permits the integration within compact front‐end PCB.

show abstract

“…In EM applications, Taguchi's method has been successfully applied in the optimization of structures such as linear antenna array: array with null controlled pattern, array with sector beam pattern and array with suppressed side lobe levels; planar filters: microstrip band stop filter, coplanar waveguide band stop filter and microstrip band pass filter; ultra‐wide band antennas; and others microstrip structures . One can also cite the advantage of easy integration of the Taguchi's method with other optimization methods as well as with commercial software .…”

Section: Introductionmentioning

confidence: 99%

Calculation of optimized parameters for the frequency selective surfaces by means of Taguchi's method

Filgueira

Campos

Neto

et al. 2016

Micro & Optical Tech Letters

View full text Add to dashboard Cite

connected to the tag. Prior to connecting the tag, the standard short-open-load-thru (SOLT) calibration is performed and the reference plane is shifted to the tips of the probe. Measurement ResultsThe impedance of the fabricated tags is measured using the twoport differential probe method. Table 2 summarizes the measured and simulated impedance values at 910 MHz. The measured data have a good agreement to the simulation data except for periodic variation along with the frequency, due to the imperfection in probe calibration. As mentioned in the previous section, the calibration was performed at the VNA port and not at the probe tip since no calibration standard was available. Therefore, the uncertainty from the VNA port to the probe tip persists and affects the impedance measurement results.The measured resistance is relatively lower than the simulated one for the automatically embroidered tag, possibly due to fabrication imperfections. Such lower resistance is observed during the simulation study when the thread connecting the characters or composing the T-matching circuit is shorter than the proposed value. The resistance also depends on the effective conductivity of the embroidered area. The effective conductivity might be decreased for the automatically fabricated tag as the threads are tightly bound to the substrate at the embroidered area, resulting in the decrease of the overall thickness. CONCLUSIONWe reported a UHF RFID tag antenna designed on a fabric substrate. The tag pattern was composed of four alphabets meandered by conductive threads. Owing to the text-meandered geometry and zigzag threading structures, the size of the antenna could be as small as 56 mm 3 24 mm 3 0.45 mm, similar to the size of an ordinary nametag. Thus, the proposed tag can be readily attached on clothing for the use of human tracking and monitoring applications.A computerized sewing machine is used to fabricate the tag. A digitizing embroidery software imported the optimized model from a full-wave electromagnetic simulation tool and then convert it to a compatible format for automatic embroidering. This process reduced the time and effort as well as errors during fabrication. The impedance of the fabricated prototypes was measured using a two-port differential probe method. The measured data shows good correspondence to the simulated data, verifying that the two-port differential probe is effective in characterizing the impedance of small RFID tags with balanced feeding structures. Other benefits are its relatively simple test fixture and impedance data retrieval process. number of test iterations required in an optimization process. Even though the method has a quite wide spectrum of applications in general, the use of Taguchi's method in electromagnetic theory is rare. In frequency selective surfaces (FSS) optimization, the Taguchi's method is unpublished. In this study, the method is applied for FSS design with two different geometries, the square loop and the gridded square loop. Key words: Taguchi's method; frequency se...

show abstract

A Novel Multiobjective Taguchi's Optimization Technique for Multibeam Array Synthesis

Cited by 22 publications

References 13 publications

Circularly polarised sequential array with enhanced gain and bandwidth for applications in C ‐band

Circularly polarised sequential array with enhanced gain and bandwidth for applications in C ‐band

Quasi‐elliptical band‐pass filters based on compact spiral resonators for C‐band applications

Calculation of optimized parameters for the frequency selective surfaces by means of Taguchi's method

Contact Info

Product

Resources

About