Design of a circularly polarised radio-frequency identification reader antenna with high return loss

Son, Hae‐Won; Park, Hyuk; Jeon, Hyung-Joon

doi:10.1049/iet-map.2010.0386

Cited by 11 publications

(8 citation statements)

References 8 publications

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“…Finally, a set of 15 designs has been selected along the Pareto set and then refined to the high-fidelity model level using (2). (1) x (2) x (3) x (4) x (5) x (6) x (7) x (8) x (9) x (…”

Section: Numerical Resultsmentioning

confidence: 99%

“…Arguably the most popular method for launching CP radiation is driving the radiator through two feeds with phase‐shifted excitations . Although this approach is straightforward, it increases complexity and physical size of the structure which is due to the necessity of accommodating the circuitry required for achieving appropriate phase shift between the radiator ports . Compact dimensions and CP operation can be also achieved through modifications of antenna geometry using slots, stubs, ground plane perforations, or their combinations .…”

Section: Introductionmentioning

confidence: 99%

“…The necessity of handling several criteria at the same time reveals multi‐objective nature of the problem. CP antenna design methods prevailing in the literature are unsuitable for explicit control of more than one criterion . Instead, they are oriented toward improvement of AR and/or reflection within the specified bandwidth, with other figures being a by‐product of the selected antenna topology .…”

Section: Introductionmentioning

confidence: 99%

“…5 Although this approach is straightforward, it increases complexity and physical size of the structure which is due to the necessity of accommodating the circuitry required for achieving appropriate phase shift between the radiator ports. [5][6][7] Compact dimensions and CP operation can be also achieved through modifications of antenna geometry using slots, stubs, ground plane perforations, or their combinations. [8][9][10] However, such antennas are normally characterized by a narrow axial ratio (AR) bandwidth which limits their usefulness for modern communication systems.…”

Section: Introductionmentioning

confidence: 99%

“…CP antenna design methods prevailing in the literature are unsuitable for explicit control of more than one criterion. 6,10,11 Instead, they are oriented toward improvement of AR and/or reflection within the specified bandwidth, with other figures being a by-product of the selected antenna topology. 11 Furthermore, manual design based on parameter sweeps and visual inspection of the structure response remains a popular design choice.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of circular polarization antenna design trade‐offs using low‐cost EM‐driven multiobjective optimization

Bekasiewicz

Koziel

Cheng

2018

Int J RF Microw Comput Aided Eng

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Circular polarization (CP) antennas are vital components of modern communication systems. Their design involves handling several requirements such as low reflection and axial ratio (AR) within the frequency range of interest. Small size is an important criterion for antenna mobility which is normally achieved as a by‐product of performance‐oriented modifications of the structure topology. In this work, multiobjective optimization is used in order to identify and analyze design trade‐offs for miniaturized CP antenna including the antenna capability for maintaining small size while retaining acceptable levels of other performance figures. We use a population‐based metaheuristic algorithm to obtain a set of designs which represent the best attainable compromise between the imposed requirements. To maintain a low optimization cost, the algorithm is executed on a cheap approximation model and the results are further corrected to bring them to the EM model accuracy level. Here, the analysis is carried out for a planar CP antenna. Achievable size reduction of the considered structure—while maintaining acceptable performance—is around 11%. Antenna performance in terms of in‐band reflection and AR varies from −14 to −10 dB and from 1.3 to 3 dB, respectively. The numerical results are validated by measurements of fabricated antenna prototypes.

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“…Finally, a set of 15 designs has been selected along the Pareto set and then refined to the high-fidelity model level using (2). (1) x (2) x (3) x (4) x (5) x (6) x (7) x (8) x (9) x (…”

Section: Numerical Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%