Design Approach to a Novel Planar Bisensing Circularly Polarized Antenna

Chen, Min-Nan; Lu, Wen‐Jun; Wang, Lei-Jie; Yang, Mei; Li, Zhu

doi:10.1109/tap.2019.2927881

Cited by 15 publications

(5 citation statements)

References 37 publications

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“…Because these antennas operate at different frequencies, the heights of all antennas need to be normalized into electrical sizes, with respect to the guided wavelength λ g at their corresponding center frequencies . As tabulated in Table , it is clearly demonstrated that the proposed antennas are superior to all of its counterparts in terms of FBR with comparable wide HPBWs. The proposed antennas can be implemented on a thin, single‐layered air substrate without introducing additional multiple elements, feed network, or cavity .…”

Section: Measurement and Verificationmentioning

confidence: 99%

“…As proven, parasitic elements can change the current distribution or adjust the coupled power to optimize the radiation level near the reflector and lead to beamwidth broadening in one or both principal‐cut planes. The second one is the complementary dipole antenna . A series of wide beamwidth complementary dipole antennas has been developed and reported, such as L‐shaped complementary dipole with inclined sidewalls, complementary dipole using even‐mode resonant loop and planar complementary dipole antennas .…”

Section: Introductionmentioning

confidence: 99%

“…The second one is the complementary dipole antenna . A series of wide beamwidth complementary dipole antennas has been developed and reported, such as L‐shaped complementary dipole with inclined sidewalls, complementary dipole using even‐mode resonant loop and planar complementary dipole antennas . The third one is to use rotational configurations: A widened beamwidth can be obtained by virtue of a rotationally symmetric array consisting of multiple identical elements and corresponding feed networks .…”

Section: Introductionmentioning

confidence: 99%

“…[9][10][11][12][13] A series of wide beamwidth complementary dipole antennas has been developed and reported, such as L-shaped complementary dipole with inclined sidewalls, 9 complementary dipole using even-mode resonant loop 10 and planar complementary dipole antennas. [11][12][13] The third one is to use rotational configurations [14][15][16] : A widened beamwidth can be obtained by virtue of a rotationally symmetric array consisting of multiple identical elements and corresponding feed networks. 14 As seen, cross dipoles 15 and printed quadrifilar helices 16 can also be used to effectively broaden the beamwidth.…”

Section: Introductionmentioning

confidence: 99%

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Wide beamwidth planar self‐balanced magnetic dipole antenna with enhanced front‐to‐back ratio

Shen

et al. 2020

Int J RF Microw Comput Aided Eng

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A design approach to a novel planar self‐balanced, wide beamwidth magnetic dipole antenna with high front‐to‐back ratio (FBR) is advanced. The principle for FBR enhancement is revealed at first. As seen, the back‐lobe level can be effectively suppressed by adjusting the unbalanced current ratio (UCR) factor: By varying the radius of the circular sector magnetic dipole antenna on the bottom layer and incorporating an arc‐shaped branch at the end of the parasitic strip, the UCR factor can be properly tuned, and the back‐lobe level can be flexibly controlled. Then, a set of closed‐form formulas is derived to provide basic design guidelines and determine the initial value of key parameters. Parametric studies on FBR are then carried out to attain the ultimate designs in a step‐by‐step manner. As numerically and experimentally verified at the 2.45‐GHz band, the FBR of a planar, air‐substrate magnetic dipole antenna is indeed increased to over 30 dB with broadened E‐/H‐plane half‐power beamwidth up to 130°/90°. Good agreement between the theoretical, numerical, and experimental results has evidently validated the proposed antenna design approach.

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Section: Measurement and Verificationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Wide beamwidth planar self‐balanced magnetic dipole antenna with enhanced front‐to‐back ratio

Shen

et al. 2020

Int J RF Microw Comput Aided Eng

Self Cite

View full text Add to dashboard Cite

show abstract

“…In Ref. [17], a design method for a planar dual‐sensor CP antenna is proposed. The antenna consists of a circular sector magnetic dipole and two parasitic concentric annular electric dipoles.…”

Section: Introductionmentioning

confidence: 99%

A new periodic fractal parasitic structure to design the circularly polarized microstrip antenna for the satellite navigation system

Wang

Xia

2021

IET Microwaves Antenna & Prop

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This study presents a novel approach to design the single-feed circularly polarized (CP) microstrip antenna by the periodic fractal parasitic structure (PFPS). By adding the PFPS along the radiated patch, a new independent orthogonal mode is generated. When the magnitudes of these two modes are the same and the time-phase difference between them is 90°, the antenna can realise CP radiation. Parameter studies of the PFPS show how to design the CP microstrip antenna. The proposed CP microstrip antenna, designed for the satellite navigation system, has a 30 MHz 10-dB impedance bandwidth and an 8 MHz 3-dB axial ratio bandwidth in the centre frequency of 1.575 GHz. The advantage of this presented CP antenna is that these two modes for realising the CP radiation are independent of each other. This makes it more convenient to simplify the designing and debugging of the proposed CP antenna.

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Antenna optimization using machine learning with reduced-dimensionality surrogates

Koziel,

Pietrenko-Dabrowska,

Leifsson

2024

Sci Rep

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In modern times, antenna design has become more demanding than ever. The escalating requirements for performance and functionality drive the development of intricately structured antennas, where parameters must be meticulously adjusted to achieve peak performance. Often, global adjustments to geometry are necessary for optimal results. However, direct manipulation of antenna responses evaluated with full-wave electromagnetic (EM) simulation models using conventional nature-inspired methods entails significant computational costs. Alternatively, surrogate-based techniques show promise but are impeded by dimensionality-related challenges and nonlinearity of antenna outputs. This study introduces an innovative technique for swiftly optimizing antennas. It leverages a machine learning framework with an infill criterion employing predicted enhancement of the merit function, utilizing a particle swarm optimizer as the primary search engine, and employs kriging for constructing the underlying surrogate model. The surrogate model operates within a reduced-dimensionality domain, guided by directions corresponding to maximum antenna response variability identified through fast global sensitivity analysis, tailored explicitly for domain determination. Operating within this reduced domain enables building dependable metamodels at a significantly lower computational cost. To address accuracy loss resulting from dimensionality reduction, the global optimization phase is supplemented by local sensitivity-based parameter adjustment. Extensive comparative experiments involving various planar antennas demonstrate the competitive operation of the presented technique over machine learning algorithms operating in full-dimensionality space and direct EM-driven bio-inspired optimization techniques.

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Design Approach to a Novel Planar Bisensing Circularly Polarized Antenna

Cited by 15 publications

References 37 publications

Wide beamwidth planar self‐balanced magnetic dipole antenna with enhanced front‐to‐back ratio

Wide beamwidth planar self‐balanced magnetic dipole antenna with enhanced front‐to‐back ratio

A new periodic fractal parasitic structure to design the circularly polarized microstrip antenna for the satellite navigation system

Antenna optimization using machine learning with reduced-dimensionality surrogates

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