Broadband modified-circle-shape patch antenna with H-aperture feeding for a passive radar array

Rosado-Sanz, Javier; Jarabo-Amores, María-Pilar; Mata-Moya, David; Gómez-del-Hoyo, Pedro; del-Rey-Maestre, Nerea

doi:10.1016/j.ast.2020.106445

Cited by 7 publications

(7 citation statements)

References 20 publications

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Section: Bandwidth Enhancementmentioning

confidence: 99%

“…However, the bandwidth can be improved by either increasing the substrate thickness, decreasing the dielectric constant (ε r ) of the substrate [43][44][45][46][47], or both. Other techniques, such as proximity coupled feed [48], aperture-coupled feed [49,50], and L-shaped feeding probe [51,52], can also be used. Some other configurations are suggested, such as slotted antenna [53,54], log-periodic array [55], E-shaped patch [56], circularly polarized patches [57,58], and defected ground method [59,60].…”

Section: Bandwidth Enhancementmentioning

confidence: 99%

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Design of Low-Profile Single- and Dual-Band Antennas for IoT Applications

et al. 2021

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This paper presents novel low-cost single- and dual-band microstrip patch antennas. The proposed antennas are realized on a square microstrip patch etched symmetrically with four slots. The antenna is designed to have low cost and reduced size to use in Internet of things (IoT) applications. The antennas provide a reconfigurable architecture that allows operation in different wireless communication bands. The proposed structure can be adjusted to operate either in single band or in dual-band operation. Two prototypes are implemented and evaluated. The first structure works at a single resonance frequency (f1 = 2.4 GHz); however, the second configuration works at two resonance frequencies (f1 = 2.4 GHz and f2 = 2.8 GHz) within the same size. These antennas use a low-cost FR-4 dielectric substrate. The 2.4 GHz is allotted for the industrial, scientific, and medical (ISM) band, and the 2.8 GHz is allocated to verify the concept and can be adjusted to meet the user’s requirements. The measurement of the fabricated antennas closely matches the simulated results.

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Section: Bandwidth Enhancementmentioning

confidence: 99%

Section: Bandwidth Enhancementmentioning

confidence: 99%

Design of Low-Profile Single- and Dual-Band Antennas for IoT Applications

et al. 2021

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“…A Passive Radar (PR) is a system that has the ability to detect and track targets without transmitting any electromagnetic signal by taking advantage of Illuminators of Opportunity (IoOs) instead of a dedicated one [1]. Some examples are: FM [2], Digital Video Broadcasting-Terrestrial (DVB-T) [3][4][5], Satellite (DVB-S) [6], and Global Navigation Satellite Systems (GNSS) [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

“…Adaptive Beamforming (ABF) is commonly employed in active radars to suppress jamming signals enabling target detection [16]. Deterministic and adaptive beamformers have also been designed to improve target detection and localisation performances [4,5,17,18]. ABF techniques are examples of optimisation problems that can take advantage of methods proposed for a wide variety of applications [19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

“…In the presented paper, ABF techniques are applied for clutter characterisation and rejection in complex PR scenarios. IDEPAR (Improved DEtection techniques for PAssive Radars) is the PR demonstrator developed at the University of Alcalá [3][4][5]. It was deployed in a coastal scenario located in the South of Spain, in an area characterised by intense ground and sea clutter returns.…”

Section: Introductionmentioning

confidence: 99%

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Adaptive Beamforming Approaches to Improve Passive Radar Performance in Sea and Wind Farms’ Clutter

Rosado-Sanz

Jarabo-Amores

Mata-Moya

et al. 2022

Sensors

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This article presents the problem of passive radar vessel detection in a real coastal scenario in the presence of sea and wind farms’ clutter, which are characterised by high spatial and time variability due to the influence of weather conditions. Deterministic and adaptive beamforming techniques are proposed and evaluated using real data. Key points such as interference localisation and characterisation are tackled in the passive bistatic scenario with omnidirectional illuminators that critically increase the area of potential clutter sources to areas far from the surveillance area. Adaptive beamforming approaches provide significant Signal-to-Interference improvements and important radar coverage improvements. In the presented case study, an aerial target is detected 28 km far from the passive radar receiver, fulfilling highly demanding performance requirements.

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A novel lens antenna with wide beamwidth using three dimensional printing

Wang

Huang

Zhang

et al. 2021

Micro & Optical Tech Letters

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In this article, a novel lens antenna with wide beamwidth using three-dimensional printing is proposed. The proposed antenna is comprised of a concave lens by using three-dimensional printing, a lantern shaped patch with a parasitic ring, and eight loaded monopoles around the center. The antenna operating frequency is 5.8 GHz, and the prototype is implemented. The measured half power beamwidth are 142 and 130 at the xoz and the yoz planes, respectively. Besides, the antenna is low cost, easy to fabricated, and very low cross polarization. Measured results agree well with the simulation results.

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Broadband modified-circle-shape patch antenna with H-aperture feeding for a passive radar array

Cited by 7 publications

References 20 publications

Design of Low-Profile Single- and Dual-Band Antennas for IoT Applications

Design of Low-Profile Single- and Dual-Band Antennas for IoT Applications

Adaptive Beamforming Approaches to Improve Passive Radar Performance in Sea and Wind Farms’ Clutter

A novel lens antenna with wide beamwidth using three dimensional printing

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