Design Method for Wideband Circularly Polarized Slot Antennas

Narbudowicz, Adam; John, Matthias; Sipal, Vit; Bao, Xiulong; Ammann, Max J.

doi:10.1109/tap.2015.2456954

Cited by 35 publications

(32 citation statements)

References 20 publications

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“…In the end, the rectangular CSRR is optimized to satisfy resonance frequency within WLAN band and obtain wider matched impedance bandwidth. The overall dimensions of antenna 1 are optimized to 18.5×20.5 mm 2 , smaller than most miniaturized UWB antennas mentioned in [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17], and some of them do not provide band-notched property.…”

Section: Antenna With Rectangular Csrr On Rectangular Patchmentioning

confidence: 99%

“…Among planar UWB antenna designs in the literature, most attention is focused on planar monopole antennas and planar wide-slot antennas [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. The advantages of a planar wide-slot antenna include wide bandwidth performance, compactness, and low cost in the printed circuit board (PCB) process.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Wideband-Notched Miniaturized Uwb Polygon-Slot Antenna Using Rectangular CSRR

Xu¹,

Zhao²,

Zheng³

et al. 2019

PIER C

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A miniaturized planar ultra-wideband (UWB) polygon-slot antenna with wideband-notched property is presented in this paper. With coplanar waveguide (CPW)-fed structure and miniaturized dimensions of 18.5 × 20.5 mm 2 , the antenna is easy to be integrated with microwave circuitry. By using one rectangular CSRR on rectangular patch, the WLAN band from 4.8 to 5.9 GHz is rejected. By cutting off two small rectangles in the lower corners of the rectangular patch, Antenna 2 is finally proposed, and UWB impedance matching from 3.1 to 12.6 GHz is achieved. The final proposed antenna is fabricated on a low-cost FR4 substrate and measured, and the measured and simulated results show an acceptable agreement. The antenna is validated to perform good radiation properties such as nearly stable radiation patterns, high gain, and high radiation efficiency.

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Section: Antenna With Rectangular Csrr On Rectangular Patchmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Wideband-Notched Miniaturized Uwb Polygon-Slot Antenna Using Rectangular CSRR

Xu¹,

Zhao²,

Zheng³

et al. 2019

PIER C

View full text Add to dashboard Cite

show abstract

“…Researchers have focused on conventional designs using textile materials and inkjet/screen printing methods [ 17 ]. However, they have not been able to solve all the existing challenges previously mentioned, despite showing some acceptable outcomes [ 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 ]. Thus, it is imperative, in retrospect of the recent progress in wearable antennas and their applications in the WBAN systems.…”

Section: Introductionmentioning

confidence: 99%

Recent Advances of Wearable Antennas in Materials, Fabrication Methods, Designs, and Their Applications: State-of-the-Art

et al. 2020

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The demand for wearable technologies has grown tremendously in recent years. Wearable antennas are used for various applications, in many cases within the context of wireless body area networks (WBAN). In WBAN, the presence of the human body poses a significant challenge to the wearable antennas. Specifically, such requirements are required to be considered on a priority basis in the wearable antennas, such as structural deformation, precision, and accuracy in fabrication methods and their size. Various researchers are active in this field and, accordingly, some significant progress has been achieved recently. This article attempts to critically review the wearable antennas especially in light of new materials and fabrication methods, and novel designs, such as miniaturized button antennas and miniaturized single and multi-band antennas, and their unique smart applications in WBAN. Finally, the conclusion has been drawn with respect to some future directions.

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“…The vast majority of antenna design procedures aim at finding the nominal designs, i.e., obtained under the assumption that the fabricated prototype retains the values of geometry and/or material parameters equal to those rendered in the course of antenna development (e.g., through parametric optimization) [1]- [5]. In practice, uncertainties of various types may affect the system operation in an undesirable manner.…”

Section: Introductionmentioning

confidence: 99%

Expedited Yield Optimization of Narrow- and Multi-Band Antennas Using Performance-Driven Surrogates

2020

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Uncertainty quantification is an important aspect of engineering design, also pertaining to the development and performance evaluation of antenna systems. Manufacturing tolerances as well as other types of uncertainties, related to material parameters (e.g., substrate permittivity) or operating conditions (e.g., bending) may affect the antenna characteristics. In the case of narrow-or multi-band antennas, this usually leads to frequency shifts of the operating bands. Quantifying these effects is imperative to adequately assess the design quality, either in terms of the statistical moments of the performance parameters or the yield. Reducing the antenna sensitivity to parameter deviations is even more essential when increasing the probability of the system satisfying the prescribed requirements is of concern. The prerequisite of such procedures is statistical analysis, normally carried out at the level of full-wave electromagnetic (EM) analysis. While necessary to ensure reliability, it entails considerable computational expenses, often prohibitive. Following the recently fostered concept of constrained modeling, this paper proposes a simple technique for rapid surrogate-assisted yield optimization of narrow-and multi-band antennas. The keystone of the approach is an appropriate definition of the optimization domain. This is realized by considering a few pre-optimized designs that represent the directions of the major changes of the antenna resonant frequencies and operating bands. Due to a small volume of such a domain, an accurate replacement model can be established therein using a small number of training samples, and employed to improve the antenna yield. Verification results obtained for a ring-slot antenna, a dual-band and a triple-band uniplanar dipoles indicate that the optimization process can be accomplished at low cost of a few dozen of EM simulations: 62, 74 and 132 EM simulations, respectively. Result reliability is validated through comparisons with EM-based Monte Carlo simulations. INDEX TERMS Uncertainty quantification; tolerance-aware design; yield optimization; multi-band antennas; performance-driven modeling.

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Design Method for Wideband Circularly Polarized Slot Antennas

Cited by 35 publications

References 20 publications

Wideband-Notched Miniaturized Uwb Polygon-Slot Antenna Using Rectangular CSRR

Wideband-Notched Miniaturized Uwb Polygon-Slot Antenna Using Rectangular CSRR

Recent Advances of Wearable Antennas in Materials, Fabrication Methods, Designs, and Their Applications: State-of-the-Art

Expedited Yield Optimization of Narrow- and Multi-Band Antennas Using Performance-Driven Surrogates

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