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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TL;DR: In this article, the authors proposed a compact wideband circularly polarized (CP) magneto-electric (ME) dipole antenna array with a novel substrate integrated waveguide (SIW) to coaxial transition (SCT) was designed to connect the lightning-shaped antenna element and an SIW feeding network.
Abstract: A compact wideband circularly polarized (CP) magneto-electric (ME) dipole antenna array is proposed. In order to achieve compact size and wideband characteristics, a novel substrate integrated waveguide (SIW) to coaxial transition (SCT) was designed to connect the lightning-shaped ME-dipole antenna element and an SIW feeding network. Particularly, an SCT-based power divider network together with the sequential-rotation (SR) technique was employed to improve the axial ratio (AR) bandwidth of the $4\times 4$ antenna array. The antenna array prototype was fabricated to verify the design. Measured results show that an impedance bandwidth of 27.7% (23.3–30.8 GHz) and 3 dB gain bandwidth of 25.3% (23.5–30.3 GHz) were achieved. Moreover, a 3 dB AR bandwidth of 27.8% (23.2–30.8 GHz) with a peak gain of 20.2 dBic was also recorded. Therefore, it is a good candidate for the fifth-generation (5G) millimeter-wave (mm-wave) communications.
32 citations
Cites background from "Design of a broadband coaxial to su..."
...Different from the transitions reported in [9] and [10], there is no requirement to load any notch onto the bottom plane of the SIW that corresponds to another capacitance....
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...9% in [9] and [12] were reported, respectively....
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...[9] and Prasad and Bishwas [10], instead of the conventional 50 impedance SCT, the proposed SCT with 100 impedance was chosen....
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...To achieve wider frequency bandwidth for SIW network, some SIW to coaxial transitions (SCTs) have been proposed recently [9], [10]....
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TL;DR: In this paper, a high-efficient leaky-wave antenna array based on substrate integrated waveguide is investigated for sidelobe suppression and multibeam generation, where the antenna array is designed upon a previous work with two feeding ports, and a tapered radiating slot array is introduced.
Abstract: A novel kind of high-efficient leaky-wave antenna array based on substrate integrated waveguide is investigated for sidelobe suppression and multibeam generation. The antenna array is designed upon a previous work with two feeding ports, and a tapered radiating slot array introduced. This kind of structure enables the array to have not only the compact architecture and high efficiency, but also the multibeam radiation and low sidelobe level (SLL). Different beams are generated by feeding the array from different input ports, and the SLL is reduced by the tapered slot lengths. The array was fabricated and measured, and the results are consistent with that of simulation.
25 citations
TL;DR: In this paper, a new vertical guiding structure in low-temperature co-fired ceramics (LTCC) substrates is proposed, which allows transmitting signals and realizing components in the body of the LTCC substrate perpendicular to its surface.
Abstract: A new vertical guiding structure in low-temperature cofired ceramics (LTCC) substrates is proposed. This vertical LTCC integrated waveguide (V-LIW) allows transmitting signals and realizing components in the body of the LTCC substrate perpendicular to its surface. This vertical integration leads to considerable footprint reduction while opening the door to higher frequency coverage as well as easy implementation of $E$ -plane structures. Discontinuities in V-LIW and transitions between the proposed V-LIW and conventional horizontal guiding structures such as coplanar waveguides, standard rectangular waveguides, and substrate integrated waveguides are also introduced. Applications to the design of V-band and W-band filters, couplers, and power dividers are presented. Several prototypes are fabricated with measurement results showing a good agreement with simulation data.
16 citations
Cites background from "Design of a broadband coaxial to su..."
...The operation mechanism of the proposed transition in the second part is based on the probe excitation of rectangular waveguides which is widely used in the design of coaxial-toconventional waveguides transitions [32], [33] and also more recently in CPW-to-SIW transitions [34], [35]....
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TL;DR: In this article, a coaxial line to substrate integrated waveguide (SIW) broadband transition is presented, which directly transforms the TEM mode of coaxial lines to the fundamental TE10 mode of the SIW.
Abstract: In this letter, a novel coaxial line to substrate integrated waveguide (SIW) broadband transition is presented The transition is designed by connecting the inner conductor of a coaxial line to an open-circuited SIW The configuration directly transforms the TEM mode of a coaxial line to the fundamental TE10 mode of the SIW A prototype back-to-back transition is fabricated for X-band operation using a 0508 mm thick RO 4003C substrate with dielectric constant 355 Comparison with other reported transitions shows that the present structure provides lower passband insertion loss, wider bandwidth and most compact The area of each transition is $008\lambda _{g}^{2}$ where $\lambda _{g}$ is the guided wavelength at passband center frequency of $f_{0}= 105$ GHz Measured 15 dB and 20 dB matching bandwidths are over 48% and 20%, respectively, at $f_{0}$
13 citations
Cites background from "Design of a broadband coaxial to su..."
...In [11], a triangular slot improves the FBW to 30% at f0 = 10 GHz....
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...Similar SMA-to-SIW transitions using electric back wall are reported in [9]–[11]....
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01 Dec 2015
TL;DR: In this paper, a back-to-back transition is designed and fabricated for X-band operation, and the insertion loss is below 1 dB over 7.15 GHz to 12.5 GHz.
Abstract: In this paper, a novel excitation technique by a commercially available SMA connector is presented for the empty substrate integrated waveguide (ESIW). The SMA connector is directly connected to one end of the ESIW. A prototype back-to-back transition is designed and fabricated for X-band operation. Measurement results show that the insertion loss of the back-to-back transition is below 1 dB over 7.15 GHz to 12.5 GHz. Losses from the transition are studied in details. The transition has a compact dimension of 22 mm∗3.5 mm.
10 citations
Cites background from "Design of a broadband coaxial to su..."
...Direct SMA to SIW transition with short circuited back wall has been reported in [5]-[6]....
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References
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17 Dec 2007
TL;DR: In this paper, a wideband transition from coplanar waveguide to substrate integrated waveguide (SIW) is proposed and presented in the 50 GHz frequency range, where electrically thick alumina was used in this case, representative for other high-permittivity substrates such as semiconductors.
Abstract: A wideband transition from coplanar waveguide (CPW) to substrate integrated waveguide (SIW) is proposed and presented in the 50 GHz frequency range. Electrically thick alumina was used in this case, representative for other high-permittivity substrates such as semiconductors. Simulations predict less than -15 dB return loss within a 35 % bandwidth. CPW probe measurements were carried out and 40 % bandwidth were achieved at -0.5 dB insertion loss for a single transition. Modified SIW via configurations being suitable for simplified fabrication on electrically thick substrates in the upper millimeter-wave spectrum are discussed in the second part.
43 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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01 Sep 2006
TL;DR: In this paper, an effective transition between coaxial and substrate integrated waveguides (SIWs), providing also a method for its design, is presented, which is not affected by energy leakage, due to unwanted radiation, and features an adequate bandwidth for many significant applications, e.g. antennas and filters.
Abstract: This paper presents an effective transition between coaxial and substrate integrated waveguides (SIWs), providing also a method for its design. The transition is not affected by energy leakage, due to unwanted radiation, and features an adequate bandwidth for many significant applications, e.g. antennas and filters. In addition, the solution is low-cost and the use of Full-Wave methods is reduced to the minimum, with no need of electromagnetic optimization. The design method can be easily extended to other structures.
23 citations
"Design of a broadband coaxial to su..." refers background in this paper
...Several topologies to make coaxSIW transition are discussed in recent publications [7]-[8]....
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01 Dec 2007
TL;DR: In this paper, a vertical transition between microstrip line and substrate integrated waveguide (SIW) on multilayer low-temperature co-fired ceramic (LTCC) as well as its equivalent circuit model is proposed.
Abstract: This paper proposes a vertical transition between microstrip line and substrate integrated waveguide (SIW) on multilayer low-temperature co-fired ceramic (LTCC) as well as its equivalent circuit model. The transition structure is realized by a shorted via between microstrip line and the bottom of SIW. The equivalent model is derived by calculating the input impedance in waveguide and the simulation result by commercial software Ansoft HFSS. One single transition exhibits more than 30% fractional bandwidth (FBW) with center frequency at 30 GHz for -15 dB return loss and 0.6 dB insertion loss in the operating band.
16 citations
"Design of a broadband coaxial to su..." refers methods in this paper
...A relation between port impedance ZPI and wave impedance ZW of equivalent waveguide of the SIW section is given by (1) Where a and b are width and height of equivalent waveguide respectively [10]-[11]....
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01 Dec 2010
TL;DR: In this paper, a tunable ferrite phase shifters using substrate integrated waveguide (SIW) technique are presented and experimentally demonstrated and a variable magnetic field bias is applied to magnetize the ferrite slabs in transverse direction.
Abstract: RESUME Le guide d'ondes integre au substrat (SIW) est une technique tres prometteuse du fait qu’il permet d’utiliser des avantages des guides d'ondes et des lignes de transmission planaires. Comme guide d'ondes, nous pouvons obtenir des avantages tels que de faible pertes, un facteur de qualite eleve, les possibilites de grande puissance et de petit rayonnement. Et comme la ligne de transmission planaire, nous pouvons en faire la fabrication avec une taille compacte et a un faible cout. Dans ce memoire, des dephaseurs a ferrite sont concus et experimentes en utilisant la technique du guide d'ondes integree au substrat (SIW) pour profiter des avantages mentionnes ci-dessus. La premiere tentative de concevoir un dephaseur a ferrite utilisant le SIW a ete faite par Wenquan et autres.
Cependant, un resultat experimental n'a pas ete presente peut-etre en raison d'une difficulte de fabrication d’un toroide de ferrite qui etait cense etre utilise dans la conception. Une bonne performance de circulateur de ferrite en structure SIW a ete obtenue par William et autres. Cependant, la conception a ete implantee dans une polarisation fixe. Dans cette lettre, des dephaseurs reglables a ferrite utilisant la technique SIW sont presentes et experimentalement demontres. Des tores de ferrite sont places ou la polarisation circulaire se produit le long du SIW. La polarisation du champ magnetique statique est appliquee pour magnetiser les tores de ferrite dans la direction transversale.-----------ABSTRACT Substrate Integrated Waveguide (SIW) is a very promising technique in that we can make use of the advantages of both waveguides and planar transmission lines. As a waveguide, we can get such advantages as low loss, high Q factor, high power capability and small radiation. And as a planar transmission line, we can fabricate it in a compact size at a low cost. In this letter, ferrite phase shifters are designed and experimented using substrate integrated waveguide (SIW) technique to take advantages mentioned above. The first attempt to design a ferrite phase shifter using SIW was made by Wenquan et al. However, an experimental result was not presented maybe because of a fabrication difficulty of ferrite toroid which was supposed to be used in the design. A quite good performance of ferrite circulator in SIW structure was obtained by William et al. However, the design was implemented in a fixed bias. In this letter, tunable ferrite phase shifters using SIW technique are presented and experimentally demonstrated. Ferrite slabs are placed where circular polarization occurs along the SIW. Static magnetic field bias is applied to magnetize the ferrite slabs in transverse direction. In this letter, a variable magnetic field biasing method is presented and implemented. Measurement and simulation results of both single ferrite slab and double ferrite slabs phase are presented.
14 citations
"Design of a broadband coaxial to su..." refers methods in this paper
...A relation between port impedance ZPI and wave impedance ZW of equivalent waveguide of the SIW section is given by (1) Where a and b are width and height of equivalent waveguide respectively [10]-[11]....
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01 Jan 2007
TL;DR: In this article, a coaxially fed substrate integrated waveguides (SIW) structure is presented, which consists of a ring loaded coaxial probe, and the analysis of the structure is carried out with the method of moments and with FEM (HFSS).
Abstract: In the present paper the study of coaxially fed substrate integrated waveguides (SIW) structures is presented. A novel feed configuration is proposed consisting of a ring loaded coaxial probe. The analysis of the structure is carried out with the method of moments and with FEM (HFSS). Applications to radiating SIW will be presented. (4 pages)
6 citations
"Design of a broadband coaxial to su..." refers background in this paper
...Several topologies to make coaxSIW transition are discussed in recent publications [7]-[8]....
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