A compact UWB elliptic antenna for indoor localization system

Karoui, Mohamed Salah; Ghariani, Nadia; Lahiani, Mongi; Ghariani, Hamadi

doi:10.1587/elex.16.20190425

Cited by 8 publications

(6 citation statements)

References 22 publications

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“…Note that the MMHPFF provides better performance that single-model PFs without choice of Q. (2) 0.039 0 0.072 0 1.083 96 PF with Q (3) 0.027 0 0.062 0 -100…”

Section: Simulationmentioning

confidence: 99%

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Multiple-model hybrid particle/FIR filter for indoor localization using wireless sensor networks

Pak

2020

IEICE Electron. Express

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This letter proposes a new state estimator called the multiplemodel hybrid particle/finite-impulse-response (FIR) filter (MMHPFF) for indoor localization using wireless sensor networks. In the proposed hybrid filtering algorithm, the multiple-model particle filter has the role of the main filter, and it overcomes uncertain process noise problems arising from the use of the constant velocity (CV) motion model in indoor localization. In addition, the multiple-model FIR filter is used as an assisting filter to overcome particle filter failures owing to the sample impoverishment phenomenon. Indoor localization simulations demonstrated that the proposed MMHPFF is more accurate and reliable than conventional algorithms.

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“…Note that the MMHPFF provides better performance that single-model PFs without choice of Q. (2) 0.039 0 0.072 0 1.083 96 PF with Q (3) 0.027 0 0.062 0 -100…”

Section: Simulationmentioning

confidence: 99%

“…Indoor localization systems based on wireless sensor networks (WSNs) have been used widely for real-time position monitoring of humans, robots, and equipment in various facilities [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. A WSN for indoor localization is composed of several fixed and mobile nodes.…”

Section: Introductionmentioning

confidence: 99%

Multiple-model hybrid particle/FIR filter for indoor localization using wireless sensor networks

Pak

2020

IEICE Electron. Express

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show abstract

“…It also has great application and research potential in the rapidly developing field of wireless communications today. The FCC classifies ultra-wideband systems into three categories: imaging systems [2], vehicular radar systems [3], and indoor ultra-wideband systems [4]. For different communication systems, the FCC has divided different frequency usage ranges.…”

Section: Introductionmentioning

confidence: 99%

An Ultra-Wideband Integrated Filtering Antenna with Improved Band-Edge Selectivity Using Multimode Resonator

Zhang,

Lei,

Zhang

et al. 2023

Electronics

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In this paper, a novel design of ultra-wideband (UWB) filtering antenna integrated with the multimode resonator (MMR) bandpass filter is proposed, aiming to enhance band-edge selectivity. At the beginning, a MMR bandpass filter is modified and studied. Based on the classic MMR filter, the proposed filter folds the microstrip transmission line to reduce its size while retaining the original filtering performance. Moreover, an open stub and short stub are added to the proposed filter to obtain a transmission of zero. Then, the folded filter with stubs and a UWB bow-tie antenna are integrated together to form a filtering antenna. The open stub and short stub in the MMR structure enhance the antenna’s upper and lower band-edge selectivity, respectively. Series of parameters are studied to analyze their influences on the frequency selection range and band-edge characteristics. Compared with the original UWB dipole antenna, such an integrated approach brings many benefits. Firstly, the UWB filter not only broadens the bandwidth of the device, but also improves band-edge selectivity, which can eliminate the unwanted passband near the operating frequencies. Secondly, the integrated system reduces the size and cost of the devices, which is very important in the miniaturization of wireless systems. In this research, the reflection coefficient (S11) of integrated filtering antenna is lower than −10 dB between 2.92 and 11.51 GHz, and it has a fractional bandwidth of 119%. The measured shape factor is 1.027 (very close to 1), which proves that this design has a better band-edge selectivity. Simultaneously, good radiation characteristics are also attained, with a maximum realized gain of 6 dBi. Theoretical simulation results are similar to the experimental results. The measurement results of the manufactured device effectively validate that its performances have reached the simulation design requirements.

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“…These antennas have significantly improved the impedance bandwidth and axial ratio bandwidth of the antenna by continuously adjusting the ground slot and the shape of the radiator, as well as the relative position of the them. [20][21][22][23][24][25][26] made full use of the broadband characteristics of monopole patch antennas, irregularly-shaped slots which could excite circularly polarized waves, and the coupling of slots generated by appropriate branches to complete antennas design. However, these antennas have never been able to balance the antenna bandwidth and gain.…”

Section: Introductionmentioning

confidence: 99%

Miniaturized broadband circularly polarized slot antenna with good gain characteristics

Tang

Zhu

Xie

et al. 2021

IEICE Electron. Express

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A broadband circularly polarized(CP) flower-shaped slot antenna is presented and experimentally studied in this paper. Circular polarization radiation is achieved by a flower-shaped(composed of six ellipses) slot of this antenna. And the irregularly shaped patch with a stub in the center of the slot provides a broad impedance and axial ratio bandwidth. After the prototype is manufactured and tested, it is shown that the measurement results are consistent with the simulation results. The measured results indicate that the proposed antenna has a 3-dB axial ratio bandwidth(ARBW) of 50.7% (from 1.68 to 2.82 GHz) at a CP center frequency of 2.2 GHz, and a wide -10-dB impedance bandwidth(IBW) of 67.0% (from 1.62 to 3.25 GHz). The antenna occupies an overall volume of 0.28 ×0.28 ×0.005 ( is the free-space wavelength at f , f =1.68 GHz). And the gain values fluctuate slightly within 1.68 to 2.82 GHz, and the variation is less than 0.5 dBic. In particular, the gain at low frequencies is outstanding compared with similar antennas.

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A compact UWB elliptic antenna for indoor localization system

Cited by 8 publications

References 22 publications

Multiple-model hybrid particle/FIR filter for indoor localization using wireless sensor networks

Multiple-model hybrid particle/FIR filter for indoor localization using wireless sensor networks

An Ultra-Wideband Integrated Filtering Antenna with Improved Band-Edge Selectivity Using Multimode Resonator

Miniaturized broadband circularly polarized slot antenna with good gain characteristics

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