Wake-Up Receiver with Equal-Gain Antenna Diversity

Kumberg, Timo; Tannhaeuser, R.; Reindl, L.

doi:10.3390/s17091961

Cited by 7 publications

(10 citation statements)

References 17 publications

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“…This enables a co-located antenna system, and thus, does not require the need to switch between antennas with different realized gains. Conversely, Design B offers good matching for all its ports and consistent gains for its LP and CP states making it suitable for perhaps polarization diversity applications as in [16], [17] and [19] and where a single-antenna unit is required. This can enable lower system implementation costs.…”

Section: Measurements and Discussionmentioning

confidence: 99%

“…Far-field antenna measurements were completed in the anechoic chamber facilities at The Royal Military College of Canada and values show a good agreement with the full-wave simulations (see Figs. [12][13][14][15][16][17]. Given this experimental setup, particular measured realized gain patterns were plotted for different azimuth angles as well as the antenna response with respect to frequency.…”

Section: Measurements and Discussionmentioning

confidence: 99%

“…In that work [16], which mainly considered the signal-to-noise ratio (SNR), a method to switch between two antennas while only one antenna was activated was implemented. Another diversity scenario was reported in [17], where antennas with equal gain were used to distinguish between small scale and large scale fading signals. Due to the fluctuating signal strengths in [17], the wake-up packet reception rate could be jeopardized, and by using antenna diversity, those effects can be mitigated.…”

Section: Take Down Policymentioning

confidence: 99%

See 2 more Smart Citations

Hybrid Dielectric Resonator Antenna for Diversity Applications With Linear or Circular Polarization

Kuznetcov

Podilchak

Clenet

et al. 2021

IEEE Trans. Antennas Propagat.

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This article presents a novel dielectric resonator antenna (DRA) with an 8-port feeding system offering gain and polarization diversity. The single-antenna unit is defined by a square arrangement of four aperture slots (ACSs), hybridized with the radiation of the dielectric resonator. Basically, an atypical feeding layout, realized by two microstrip transmission lines driving each of the four ACSs (thus requiring a total of 8 feed lines), allows for controlled excitation of the polarization. This resonator and feeder define the 8-port DRA, which, can offer linear polarization (LP), right-handed circular polarization (RHCP) or left-handed circular polarization (LHCP). Reflection coefficient and coupling values for different port excitation scenarios are also investigated for each polarization state of the L-band antenna. The maximum gain is about 5 dBic for LHCP or RCHP and 5 dBi when considering LP radiation. Such agility can be useful for the Global Navigation Satellite System (GNSS), for example, and other RF challenged environments where the dominant polarization is not known apriori. Other applications include duplex systems, wireless communications, and other phased arrays where gain or polarization diversity is of interest. Index Terms-Dielectric resonator antenna (DRA), polarization diversity, hybrid antenna, microstrip line, aperture coupled slots (ACSs). I. INTRODUCTIOND IELECTRIC resonator antennas (DRAs) have received considerable attention for different RF communication systems and satellite applications. They are generally compact, provide high radiation efficiencies, can be excited using various feeding techniques, and provide high gain. Recent developments focus on new types of DRAs including dual-band operation with high impedance bandwidth [1], new feeding techniques [2] and new shapes for the radiating elements such as the T-shape [3], L-shape [4], stair-shape [5], [6] and others. However, to achieve wide bandwidth with a compact design, the feeding system can be challenging. Moreover, difficulties can arise when trying to achieve wide bandwidth and high polarization diversity at the same time. This is because most DRA feeding systems are focused on the efficient excitation of only one type of polarization, being either linearly polarized (LP) or circularly polarized (CP).

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Section: Measurements and Discussionmentioning

confidence: 99%

Section: Measurements and Discussionmentioning

confidence: 99%

Section: Take Down Policymentioning

confidence: 99%

See 1 more Smart Citation

Hybrid Dielectric Resonator Antenna for Diversity Applications With Linear or Circular Polarization

Kuznetcov

Podilchak

Clenet

et al. 2021

IEEE Trans. Antennas Propagat.

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“…C IRCULARLY polarized (CP) antennas continue to be of interest, offering advantages of reduced multipath interference and decreased polarization orientation mismatch, making them appealing for wireless and satellite systems [1]. Dual-polarization antennas, providing polarization diversity, are also advantageous for wireless communications in complex environments where direct line of sight is challenging [1]- [6]. Dual-circularly polarized (DCP) antennas, such as those in [6] and [7], can also reduce power consumption for mobile devices and enhance wireless sensor networks, offering benefits like wake-up signals and data transmission.…”

Section: Introductionmentioning

confidence: 99%

Dual-Circularly Polarized Single-Element Patch Antenna With Compact Multiport Feeding

Almalki,

Alshammari,

Podilchak

2024

Antennas Wirel. Propag. Lett.

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A circularly polarized (CP) S-band patch antenna that makes use of a multi-port setup to improve its radiation efficiency and compactness is presented. The design highlights a single-element patch with eight-port feeding, by using compact slot meandering. To the best knowledge of the authors, no earlier literature discloses a similar single-element patch with eight feeding points made compact by slot meandering whilst demonstrating comparable performances, BW, agility, and polarization purity. In addition, our design utilizes eight, 50-Ω microstrip ports to set and excite the orthogonal polarization states. The miniaturized feeding arrangement, directly under the patch, enables the antenna to produce both left-handed and righthanded CP (as well as other polarization states), making the design suitable for full-duplex and diversity scenarios.

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“…Developments of microelectronics enable significant energy savings, so that energy supply from ambient sources becomes increasingly practicable [ 10 , 11 ]. Wake-up receivers allow fully switching off unnecessary system parts and significantly reducing the energy consumption during sleeping phases [ 12 ]. Data aggregation techniques, clustering and intelligent routing enable significant energy savings on network level [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

Energy-Aware System Design for Autonomous Wireless Sensor Nodes: A Comprehensive Review

Kanoun

Bradai

Khriji

et al. 2021

Sensors

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Nowadays, wireless sensor networks are becoming increasingly important in several sectors including industry, transportation, environment and medicine. This trend is reinforced by the spread of Internet of Things (IoT) technologies in almost all sectors. Autonomous energy supply is thereby an essential aspect as it decides the flexible positioning and easy maintenance, which are decisive for the acceptance of this technology, its wide use and sustainability. Significant improvements made in the last years have shown interesting possibilities for realizing energy-aware wireless sensor nodes (WSNs) by designing manifold and highly efficient energy converters and reducing energy consumption of hardware, software and communication protocols. Using only a few of these techniques or focusing on only one aspect is not sufficient to realize practicable and market relevant solutions. This paper therefore provides a comprehensive review on system design for battery-free and energy-aware WSN, making use of ambient energy or wireless energy transmission. It addresses energy supply strategies and gives a deep insight in energy management methods as well as possibilities for energy saving on node and network level. The aim therefore is to provide deep insight into system design and increase awareness of suitable techniques for realizing battery-free and energy-aware wireless sensor nodes.

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Wake-Up Receiver with Equal-Gain Antenna Diversity

Cited by 7 publications

References 17 publications

Hybrid Dielectric Resonator Antenna for Diversity Applications With Linear or Circular Polarization

Hybrid Dielectric Resonator Antenna for Diversity Applications With Linear or Circular Polarization

Dual-Circularly Polarized Single-Element Patch Antenna With Compact Multiport Feeding

Energy-Aware System Design for Autonomous Wireless Sensor Nodes: A Comprehensive Review

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