Miniature antenna for circularly polarized quasi isotropic coverage

Huchard, M.; Delaveaud, Christophe; Tedjini, Smaïl

doi:10.1049/ic.2007.0953

Cited by 20 publications

(11 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although some of them have very wide CP coverage, the radiation patterns are not isotropic. Very few works have been reported that have attempted to achieve quasi-isotropic radiation patterns and wide CP coverage at the same time [27][28][29][30][31][32]. However, [28][29][30] have a directional radiation pattern for each polarization sense, i.e., RHCP radiation in one semi-sphere and LHCP in the other semi-sphere.…”

Section: Introductionmentioning

confidence: 99%

“…Very few works have been reported that have attempted to achieve quasi-isotropic radiation patterns and wide CP coverage at the same time [27][28][29][30][31][32]. However, [28][29][30] have a directional radiation pattern for each polarization sense, i.e., RHCP radiation in one semi-sphere and LHCP in the other semi-sphere. Thus, they are not orientation-insensitive and not very suitable for IoT applications.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Fully-Printed 3D Antenna With 92% Quasi-Isotropic and 85% CP Coverage

Klionovski

Liao

et al. 2022

IEEE Trans. Antennas Propagat.

View full text Add to dashboard Cite

Internet of things (IoT) applications require orientation insensitive wireless devices to maintain stable and reliable communication. For those reasons, antennas providing a wide quasi-isotropic and circular polarization (CP) coverage are very attractive. However, achieving a wide quasi-isotropic and CP coverage simultaneously is challenging. In this work, we show that properly designed sloped dipoles on a 3D structure can maximize the CP coverage (theoretically up to 100%) even with equal-phased feed to the dipole elements. We derive the conditions and present the design graphs for the optimum slope angle for the dipole elements on a 3D hexagonal-shaped package to achieve a wide quasi-isotropic and CP coverage simultaneously. Based on the proposed theory, a practical antenna has been designed and fabricated using additive manufacturing. The measured results demonstrate a 7dBisotropy of 92% and a CP coverage of 85%, which matches well with the predicted results from the theoretical analysis and full-wave simulations.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Fully-Printed 3D Antenna With 92% Quasi-Isotropic and 85% CP Coverage

Klionovski

Liao

et al. 2022

IEEE Trans. Antennas Propagat.

View full text Add to dashboard Cite

show abstract

“…Efforts to achieve broad CP radiation are limited by the generation of deep nulls in the gain patter [3]- [4]. Thus, omnidirectional CP antennas have been proposed as a tradeoff of isotropy and polarization coverage [5]- [7]. Nevertheless, none of the reviewed works tackles a complete rounded solution of comprehensive power gain coverage, simultaneous CP radiation and, a full shielded core that protects from detuning effects.…”

Section: Introductionmentioning

confidence: 99%

Quasi-Isotropic Antenna-in-Package with a Shielded Core and Wide Circular Polarization Coverage

Arboleda

Klionovski

Shamim

2022

2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI)

View full text Add to dashboard Cite

Given the dynamic nature of the Internet of Things (IoT) scenarios, peripheral devices' radiation patterns must cover large areas to avoid disconnection in case of change of orientation relative to the base station. This broad coverage should be for both the power radiated as well as for the polarization of the electromagnetic wave, increasing the probabilities of a sturdy link between peripheral devices and the base stations. Current devices implement simple omnidirectional antennas that are linearly polarized and can be easily detuned due to the proximity of the electronics. This paper proposes an Antennain-Package design based on a microstrip patch volumetric array. The system consists of six circular patch antenna elements with perturbation segments. The patches work on the 2.4 GHz ISM band. Each element is placed on one face of a 3D hollow cube, and the internal walls are covered in metal, acting as a shielded core for the embedded electronics and ground for the patch elements. The design simultaneously demonstrates a 7 dB gain variation in 95% of the 3D sphere and a circular polarization coverage in 84%.

show abstract

“…In order to ensure a wide and stable radiation pattern and strong miniaturization, the axis of symmetry is required. Some compact solutions with four elements have also been studied with a wide radiation pattern [11][12][13][14]. However, the proposed structures in these references use the low-loss dielectric substrates, which are expensive for industrial application.…”

Section: Introductionmentioning

confidence: 99%

Low Cost Circularly Polarized Antenna for IoT Space Applications

2020

View full text Add to dashboard Cite

This work presents the use of a three-element radiating structure for circularly polarized Low-Power Wide Area Network (LP-WAN) communication with space. The proposed structure has a 72 mm × 72 mm × 12 mm compact size with Right-Handed Circular Polarization (RHCP) and a 120∘ wide beamwidth radiation pattern. Printed on low-cost FR4 Epoxy substrate, a feeding network circuit based on Quasi Lumped Quadrature Coupler (QLQC), it achieves a −0.6 dB insertion loss and a very compact size. The final structure has a 69% total efficiency and a 3.14 dBic realized gain.

show abstract

Miniature antenna for circularly polarized quasi isotropic coverage

Cited by 20 publications

References 0 publications

A Fully-Printed 3D Antenna With 92% Quasi-Isotropic and 85% CP Coverage

A Fully-Printed 3D Antenna With 92% Quasi-Isotropic and 85% CP Coverage

Quasi-Isotropic Antenna-in-Package with a Shielded Core and Wide Circular Polarization Coverage

Low Cost Circularly Polarized Antenna for IoT Space Applications

Contact Info

Product

Resources

About