Design of a broadband coaxial to substrate integrated waveguide (SIW) transition
01 Nov 2013-pp 896-898
TL;DR: In this article, a two-port SIW section using back-to-back configuration of the proposed transition is designed to operate at X-band (8-12 GHz), and measured result shows a broad bandwidth (30%) and an insertion loss of 1.2 dB in the operating band.
Abstract: In this paper, a novel design of broadband coaxial to substrate integrated waveguide (SIW) transition has been implemented. The difficulties to get impedance matching between SIW and excitation port especially for thin substrate has been investigated and design steps to overcome the problem has been discussed. A two port SIW section using back-to-back configuration of the proposed transition is designed to operate at X-band (8-12 GHz) and fabricated. The measured result shows a broad bandwidth (30%) and an insertion loss of 1.2 dB in the operating band.
Citations
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Patent•
02 Oct 2015TL;DR: In this article, the authors propose a modular configuration for calibrating vector network analysers, implemented by means of SIC, ESIW and microstrip technologies, which allows the noises that are intrinsic to the connection to the analyser to be the same in all of the calibration measurements.
Abstract: The invention relates to a device for calibrating vector network analysers, implemented by means of SIC, ESIW and microstrip technologies. The calibration device of the invention is characterised in that it is a modular device comprising connection modules (5) connected to the vector analyser and to calibration modules (which can be SIC, ESIW or microstrip modules). This modular configuration allows the noises that are intrinsic to the connection to the analyser (including transfers to microstrip, SIC, etc.) to be the same in all of the calibration measurements, allowing the noises associated with each connection to be detected and/or eliminated.
1 citations
TL;DR: In this article, a planar high gain planar millimeter-wave horn antenna array with low sidelobe was proposed, which is based on the multilayered dielectric substrate board process and totally has 10-layer substrates, including the feeding network layer.
Abstract: A wideband, high-gain planar millimeter-wave horn antenna array with low sidelobe has been proposed. The proposed design is based on the multilayered dielectric substrate board process and totally has 10-layer substrates, including the feeding network layer. The horn element is composed of the stratified dielectric material in the longitudinal direction to achieve a wide bandwidth. Simultaneously, the profiled wall of the horn can further enhance the bandwidth and stabilize the radiation performance. A 4 × 4 array prototype with triangular lattice is optimally designed, fabricated, and measured. The results show that the simulated impedance bandwidth ranges from 22 GHz to over 45 GHz, the measured bandwidth is from 21.9 GHz to over 40 GHz (limited by the experiment conditions). The simulated and measured peak gains are 21.86 dBi and 19.7 dBi, respectively. Besides, the sidelobe levels are lower than −17 dB from 21.9 GHz to 32 GHz. The proposed antenna is believed to be a good candidate for the millimeter-wave point-to-point communication links.
1 citations
TL;DR: This work addresses both compactness and full-band operation of output arms deployed in radar applications by presenting a novel approach to design such a subsystem using a global optimization procedure.
Abstract: An output arm is the first subsystem in the microwave components chain connected immediately after the power amplifier. These arms are responsible for transferring the signal from the output port of the power amplifier to the standard line of the system. The second objective is to obtain directive samples for both forward and backward signals. The typical design process for such a subsystem is carried out through the design of separate components, independently. This limits the achievable performance of the entire system and introduces excessive losses at intermediate flanges. In this work, we present a novel approach to design such a subsystem using a global optimization procedure. Specifically, we address both compactness and full-band operation of output arms deployed in radar applications. Analysis and design of each component in the proposed subsystem are illustrated. The presented subsystem achieves a deep matching level of 19 dB within an overall length below $2\lambda _{g}$ . Moreover, the directive sample obtained through the presented design has an ultra-flat response of 20 dB ± 0.5 dB over the entire band of operation, while the directivity of the samples exceeds 18 dB. The measured results of the fabricated prototype have an excellent agreement with the simulations.
Cites background from "Design of a broadband coaxial to su..."
...A variety of adapter designs exist in the literature that provide deep matching levels transitioning from coaxial line to traditional guiding structures; such as rectangular waveguide [8], [9], or the modern guiding structures; such as ridge gap waveguides and substrate integrated waveguides [10]–[13]....
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Journal Article•
28 Jun 2018-International Journal of Advanced Research in Computer Science and Electronics Engineering
TL;DR: The use of substrate integrated waveguide (SIW) technology in the design and fabrication of SIW waveguides, SIW slot antennas andSIW slot array antennas is reviewed.
Abstract: The use of substrate integrated waveguide (SIW) technology in integrated microwave circuits has increased significantly in the last few years. The SIW technology has been used to design phase shifters, oscillators, filters and cavity backed antennas. SIW waveguides show similar characteristics as that of rectangular metallic waveguides but with more advantages like low fabrication cost, light weight etc. This paper reviews the use of SIW technology in the design and fabrication of SIW waveguides, SIW slot antennas and SIW slot array antennas.
References
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TL;DR: In this paper, a planar platform is developed in which the microstrip line and rectangular waveguide are fully integrated on the same substrate, and they are interconnected via a simple taper.
Abstract: Usually transitions from microstrip line to rectangular waveguide are made with three-dimensional complex mounting structures. In this paper, a new planar platform is developed in which the microstrip line and rectangular waveguide are fully integrated on the same substrate, and they are interconnected via a simple taper. Our experiments at 28 GHz show that an effective bandwidth of 12% at 20 dB return loss is obtained with an in-band insertion loss better than 0.3 dB. The new transition allows a complete integration of waveguide components on substrate with MICs and MMICs.
1,631 citations
"Design of a broadband coaxial to su..." refers background in this paper
...Many attempts to excite SIW using microstrip line or co-planar waveguide have been reported in recent years [3]-[5]....
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TL;DR: In this article, the authors provide an overview of the recent advances in the modelling, design and technological implementation of SIW structures and components, as well as their application in the development of circuits and components operating in the microwave and millimetre wave region.
Abstract: Substrate-integrated waveguide (SIW) technology represents an emerging and very promising candidate for the development of circuits and components operating in the microwave and millimetre-wave region. SIW structures are generally fabricated by using two rows of conducting cylinders or slots embedded in a dielectric substrate that connects two parallel metal plates, and permit the implementation of classical rectangular waveguide components in planar form, along with printed circuitry, active devices and antennas. This study aims to provide an overview of the recent advances in the modelling, design and technological implementation of SIW structures and components.
1,129 citations
"Design of a broadband coaxial to su..." refers background in this paper
...Several studies of implementing different microwave components using this technology have been reported in many literatures [2]....
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TL;DR: In this paper, a waveguide of new structure has been developed for millimeter-wave applications, which can be embedded in a substrate and is able to be wired in three dimensions, and its transmission characteristics are evaluated using a glass-ceramic substrate of dielectric constant, /spl epsiv/sub r/=5, and loss, tan /spl delta/=0.0008.
Abstract: A waveguide of new structure has been developed for millimeter-wave applications. The dielectric waveguide is constructed with sidewalls consisting of lined via-holes and edges of metallized planes. This structure can be manufactured by lamination techniques, so we refer to the waveguide as a "laminated waveguide". The laminated waveguide can be embedded in a substrate and is able to be wired in three dimensions. The transmission characteristics are evaluated using a glass-ceramic substrate of dielectric constant, /spl epsiv//sub r/=5, and loss, tan /spl delta/=0.0008. Insertion loss per unit length of the guide is estimated to be less than 0.5 dB/cm at 83 GHz. Furthermore, it was confirmed that the laminated waveguide is suitable to feeding lines for a small sized plane array antenna. By electromagnetic simulation, it has been confirmed that fundamental structures, such as bends, branches, power dividers, and interconnections between upper and lower layers can be realized with sufficient performances.
493 citations
"Design of a broadband coaxial to su..." refers background in this paper
...In recent years, studies on substrate integrated waveguide (SIW) technology has attracted high interest among the researchers since it is very good candidate for high frequency microwave and millimeter-wave circuits [1]....
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20 May 2001
TL;DR: In this paper, a planar platform is developed in which a coplanar waveguide and a rectangular waveguide are fully integrated on the same substrate, and they are interconnected via a simple transition.
Abstract: Usual transitions between planar circuit and rectangular waveguide make use of 3-D complex mounting structures. Such an integration requires costly high precision mechanical alignment, In this paper, a new planar platform is developed in which a coplanar waveguide (CPW) and a rectangular waveguide are fully integrated on the same substrate, and they are interconnected via a simple transition. They can be built with a standard PCB process. Our experiments at 28 GHz show that an effective bandwidth of 7% at 15 dB return loss can easily be achieved. The CPW-to-waveguide transition allows for a complete integration of waveguide components on substrate with active components such as MMIC.
208 citations
03 Apr 2012
TL;DR: A novel ultra-wideband GCPW to SIW transition is developed that integrates the coupling slot and impedance transformer into one tapered coupling slot to achieve an ultra wide bandwidth.
Abstract: In this paper, a novel ultra-wideband GCPW to SIW transition is developed. The transition integrates the coupling slot and impedance transformer into one tapered coupling slot to achieve an ultra wide bandwidth. The tapered coupling slot converts the arbitrary impedance of the SIW to the GCPW port impedance. The vias were strategically located to suppress unwanted modes across the transition as well. The fabricated transition demonstrated over 10 GHz bandwidth with less than 0.4 dB insertion loss at X-band. Theoretical and experimental results are presented and compared with previously designed transitions.
67 citations