Slotted ESIW Antenna With High Efficiency for a MIMO Radar Sensor

Miralles, Enric; Belenguer, Ángel; Mateo, J.; Torres, Ana; Esteban, H.; Borja, Alejandro L.; Boria, Vicente E.

doi:10.1002/2017rs006461

Cited by 12 publications

(5 citation statements)

References 7 publications

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“…At the same operating band of 30.5 GHz, the gain and efficiency of the AFSIW antenna are 3.5 dB and 1.6% higher than those of the DFSIW, respectively. In [32], a 1 × 10-slotted ESIW antenna for a multiple-input multiple-output (MIMO) radar sensor was introduced. It achieved a measured gain of 15 dB in the target operating band (16-16.5 GHz).…”

Section: Introductionmentioning

confidence: 99%

A novel SW-ESIW slot antenna and its applications in millimeter-wave array design

Qiang,

Xu,

Yang

et al. 2023

Front. Phys.

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A novel structure of slot antenna with high gain and compact size for millimeter-wave (mmW) applications is proposed. This is the first attempt to apply slow-wave substrate integrated waveguide (SW-ESIW) to the field of antennas and their arrays. Two slot antenna arrays were designed, fabricated and measured. The measured results are in agreement with the simulation. The removal of dielectric substrate improves the radiation gain. At the same time, the slow wave effect, by means of physical separation of electric and magnetic fields, decreases both the lateral and longitudinal dimensions of the antenna. The SW-ESIW slot antenna can achieve miniaturization while retaining the advantages of high gain of ESIW. The 1 × 4-slot array shows a measured −10 dB bandwidth of 16% (30.5–35.8 GHz) with a measured maximum gain of 11.69 dB. The 4 × 4-slot array achieves a measured −10 dB bandwidth of 7.6% from 31.6 to 34.1 GHz with a measured peak gain of 18.75 dB. In addition, during the operating band, the radiation pattern is stable. Compared with the previously structures, the proposed SW-ESIW antenna structure has a better trade-off between gain and footprint. It can be flexibly adjusted to adapt to different requirements. These performances ensure that the antenna array based on the proposed structure is a promising candidate for millimeter-wave wireless applications including the fifth-generation mobile communications.

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Section: Introductionmentioning

confidence: 99%

A novel SW-ESIW slot antenna and its applications in millimeter-wave array design

Qiang,

Xu,

Yang

et al. 2023

Front. Phys.

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“…To validate this promising technology, some common microwave devices have been designed, manufactured, and measured. Some of these devices are filters [3,4], antennas [5][6][7], 90 • hybrid directional couplers [8], circulators [9], and phase shifters [10].…”

Section: Introductionmentioning

confidence: 99%

Transition from Microstrip Line to Ridge Empty Substrate Integrated Waveguide Based on the Equations of the Superellipse

et al. 2020

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In recent years, multiple technologies have been proposed with the aim of combining the characteristics of traditional planar and non-planar transmission lines. The first and most popular of these technologies is the Substrate Integrated Waveguide (SIW), where rows of metallic vias are mechanized in a printed circuit board (PCB). These vias, together with the top and bottom metal layers of the PCB, form a channel for the propagation of the electromagnetic fields, similar to that of a rectangular waveguide, but through a dielectric body, which increases the losses. To reduce these losses, the empty substrate integrated waveguide (ESIW) was recently proposed. In the ESIW, the dielectric is removed from the substrate, and this results in better performance (low profile and easy manufacturing as in SIW, but lower losses and better quality factor for resonators). Recently, to increase the operational bandwidth (monomode propagation) of the ESIW, the ridge ESIW (RESIW) and a transition from RESIW to microstrip line was proposed. In this work, a new and improved wideband transition from microstrip line (MS) to RESIW, with a dielectric taper based on the equations of the superellipse, is proposed. The new wideband transition presents simulated return losses in a back-to-back transition greater than 20 dB in an 87% fractional bandwidth, while in the previous transition the fractional bandwidth was 82%. This is an increment of 5%. In addition, the transition presents simulated return losses greater than 26 dB in an 84% fractional bandwidth. For validation purposes, a back-to-back configuration of the new transition was successfully manufactured and measured. The measured return loss is better than 14 dB with an insertion loss lower than 1 dB over the whole band.

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“…The performance of ESIW devices in terms of losses and quality factor, is much better than those implemented in SIW technology, approaching the performance of rectangular waveguide devices, while the low cost and low profile of ESIW is similar to that of SIW. Many communication devices have also been successfully implemented in ESIW, such as transitions [5]- [8], filters of different order and frequency bands [4], [9], filters with increased height and quality factor [10], compact filters [11], [12], 90 • hybrid directional couplers [13], Moreno cross-guide directional couplers [14], and antennas [15], [16]. Other similar solutions to ESIW technology have also been proposed.…”

Section: Introductionmentioning

confidence: 99%

Thermal Stability Analysis of Filters in Substrate Integrated Technologies Under Atmospheric Pressure and Vacuum Conditions

et al. 2020

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Substrate integrated (SI) technologies, either completely or partially filled with dielectric, as well as completely empty (i.e. without any dielectric material), have been object of intense research in the last years. Their performance in terms of losses, cost and size are midway between those of classical planar lines and rectangular waveguides. Many communication devices have already been successfully designed, manufactured and measured in all these SI technologies. But these measurements are mostly done at room temperature under atmospheric pressure conditions. However, the good results (in terms of low loss, profile and cost) of these novel technologies, especially the completely empty versions, close to the performance of the rectangular waveguide, make them a very good alternative for being used in small satellite payloads. Up to now, few attention has been given to the thermal analysis of these SI technologies, still missing a complete comparative study of these effects under both, atmospheric pressure and vacuum conditions. In this work the same filter is implemented on four different SI technologies (including completely and partially filled with dielectric, as well as empty-no dielectric-versions). The four filters are designed, manufactured, and measured at different temperatures according to the thermal testing standards for space applications. The thermal study is performed under atmospheric pressure conditions and, for the first time, under high vacuum conditions. Finally, a comparison with all previous available thermal studies (all of them performed at atmospheric pressure levels) is included. INDEX TERMS Cavities, empty substrate-integrated coaxial line (ESICL), empty substrate-integrated waveguide (ESIW), filters, microwave integrated circuits, payloads, rectangular waveguide, satellites, substrate integrated waveguide (SIW), space communications, substrate integrated circuits (SIC), thermal stability coefficient of thermal expansion (CTE).

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Slotted ESIW Antenna With High Efficiency for a MIMO Radar Sensor

Cited by 12 publications

References 7 publications

A novel SW-ESIW slot antenna and its applications in millimeter-wave array design

A novel SW-ESIW slot antenna and its applications in millimeter-wave array design

Transition from Microstrip Line to Ridge Empty Substrate Integrated Waveguide Based on the Equations of the Superellipse

Thermal Stability Analysis of Filters in Substrate Integrated Technologies Under Atmospheric Pressure and Vacuum Conditions

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