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
More filters
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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