A D-band Waveguide-SIW Transition for 6G Applications

Altaf, Amir; Elahi, Manzoor; Abbas, Syed Muzahir; Yousaf, Jawad; Almajali, Eqab

doi:10.26866/jees.2022.4.r.104

Cited by 9 publications

(6 citation statements)

References 14 publications

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“…Figure 4B and 4D shows the simulated S 11 of the SIW cavity with via and the corresponding field distribution at TE 110 mode. At the same time, the frequency of TE 1N0 mode (where N is an integer) in a SIW cavity (with W = 34 mm and L = 27 mm) without via is calculated as follows 16,19 :…”

Section: T a B L Ementioning

confidence: 99%

“…GCPW is a transition structure from microstrip line to SIW cavity. Compared to the broadband transition structure mentioned in Altaf et al, 16 the structure used in this paper is simple and does not require a feed from the metal waveguide, which is suitable for low‐frequency antennas. The slot length is half of the working wavelength 17 and its design parameters can be shown in Table 1.…”

Section: Analysis Of Antenna Directivitymentioning

confidence: 99%

\left\{\begin{array}{c}f(T{E}_{\text{1n0}})=\frac{{c}_{0}}{2\sqrt{{\varepsilon }_{r}}}\sqrt{{(1/{W}_{\text{eff}})}^{2}+{(n/{L}_{\text{eff}})}^{2}}\\ {L}_{\text{eff}}={\rm{L}}-\frac{{\text{Dvia}}^{2}}{0.95\times \text{Wvia}}\\ {W}_{\text{eff}}={\rm{W}}-\frac{{\text{Dvia}}^{2}}{0.95\times \text{Wvia}}\end{array}\right.,

where c 0 is the speed of light in vacuum, ε r is the dielectric of substrate. By Equation (), the frequency of TE 110 in a SIW cavity without via should be 4.9 GHz.…”

Section: Improvement Of Antennamentioning

confidence: 99%

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Directivity‐enhanced planar slot antenna backed by substrate integrated waveguide cavity

Sun

et al. 2023

Micro & Optical Tech Letters

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In this paper, a directivity‐enhanced planar slot antenna (PSA) backed by substrate integrated waveguide (SIW) cavity is proposed to solve the problem of maximum gain direction bias. According to the radiation principle of slot antenna, the reason for maximum gain direction bias is explained and the solution has been given. Ulteriorly, the problem of frequency bias caused by changing the directivity is also explained by resonance modes and solved by introducing the metal via. An example with 5.8 GHz which has the maximum gain of 5.28 dBi and the total thickness less than λ/4 is given. After structural optimization and measurement, the maximum radiation direction of improved antenna is 0° from the normal direction of antenna surface, and it maintains the good radiation performance and small size of the traditional PSA backed by SIW cavity.

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Section: T a B L Ementioning

confidence: 99%

Section: Analysis Of Antenna Directivitymentioning

confidence: 99%

\left\{\begin{array}{c}f(T{E}_{\text{1n0}})=\frac{{c}_{0}}{2\sqrt{{\varepsilon }_{r}}}\sqrt{{(1/{W}_{\text{eff}})}^{2}+{(n/{L}_{\text{eff}})}^{2}}\\ {L}_{\text{eff}}={\rm{L}}-\frac{{\text{Dvia}}^{2}}{0.95\times \text{Wvia}}\\ {W}_{\text{eff}}={\rm{W}}-\frac{{\text{Dvia}}^{2}}{0.95\times \text{Wvia}}\end{array}\right.,

where c 0 is the speed of light in vacuum, ε r is the dielectric of substrate. By Equation (), the frequency of TE 110 in a SIW cavity without via should be 4.9 GHz.…”

Section: Improvement Of Antennamentioning

confidence: 99%

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Directivity‐enhanced planar slot antenna backed by substrate integrated waveguide cavity

Sun

et al. 2023

Micro & Optical Tech Letters

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“…With the rapid advancements in wireless communication technology, the current and impending communication systems necessitate electrically small, geometrically simple, and low-profile antennas with high gain and wideband characteristics [ 1 , 2 ]. Due to promising radiation characteristics such as higher data rate, large bandwidth, and minimal power requirement, ultra-wideband (UWB) antennas are considered as auspicious candidates for various commercial and military applications such as health monitoring systems, radar imaging, tracking, and precision locating applications [ 3 , 4 , 5 , 6 , 7 , 8 ]. However, some of these applications require high-gain antennas with increased directivity [ 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

Bandwidth and Gain Enhancement of a CPW Antenna Using Frequency Selective Surface for UWB Applications

et al. 2023

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In this article, a single-layer frequency selective surface (FSS)-loaded compact coplanar waveguide (CPW)-fed antenna is proposed for very high-gain and ultra-wideband applications. At the initial stage, a geometrically simple ultra-wideband (UWB) antenna is designed which contains CPW feed lines and a multi-stub-loaded hexagonal patch. The various stubs are inserted to improve the bandwidth of the radiator. The antenna operates at 5–17 GHz and offers 6.5 dBi peak gain. Subsequently, the proposed FSS structure is designed and loaded beneath the proposed UWB antenna to improve bandwidth and enhance gain. The antenna loaded with FSS operates at an ultra-wideband of 3–18 GHz and offers a peak gain of 10.5 dBi. The FSS layer contains 5 × 5 unit cells with a total dimension of 50 mm × 50 mm. The gap between the FSS layer and UWB antenna is 9 mm, which is fixed to obtain maximum gain. The proposed UWB antenna and its results are compared with the fabricated prototype to verify the results. Moreover, the performance parameters such as bandwidth, gain, operational frequency, and the number of FSS layers used in the proposed antenna are compared with existing literature to show the significance of the proposed work. Overall, the proposed antenna is easy to fabricate and has a low profile and simple geometry with a compact size while offering a very wide bandwidth and high gain. Due to all of its performance properties, the proposed antenna system is a strong candidate for upcoming wideband and high-gain applications.

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“…A back-to-back (B2B) SIW transition has been fabricated for the tested impedance bandwidth of 26.5 GHz. A higher frequency shifting has been used to achieve using pair of vias and impedance matching is improved by introducing a rectangular slot at the bottom of SIW (Altaf et al , 2022).…”

Section: Introductionmentioning

confidence: 99%

Aerodynamic slotted SIW-to-MS line transition using mitered end taper for satellite and RADAR communications

Varshney

Sharma

2023

WJE

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Purpose This paper aims to present the design development and measurement of two aerodynamic slotted X-bands back-to-back planer substrate-integrated rectangular waveguide (SIRWG/SIW) to Microstrip (MS) line transition for satellite and RADAR applications. It facilitates the realization of nonplanar (waveguide-based) circuits into planar form for easy integration with other planar (microstrip) devices, circuits and systems. This paper describes the design of a SIW to microstrip transition. The transition is broadband covering the frequency range of 8–12 GHz. The design and interconnection of microwave components like filters, power dividers, resonators, satellite dishes, sensors, transmitters and transponders are further aided by these transitions. A common planar interconnect is designed with better reflection coefficient/return loss (RL) (S11/S22 ≤ 10 dB), transmission coefficient/insertion loss (IL) (S12/S21: 0–3.0 dB) and ultra-wideband bandwidth on low profile FR-4 substrate for X-band and Ku-band functioning to interconnect modern era MIC/MMIC circuits, components and devices. Design/methodology/approach Two series of metal via (6 via/row) have been used so that all surface current and electric field vectors are confined within the metallic via-wall in SIW length. Introduced aerodynamic slots in tapered portions achieve excellent impedance matching and tapered junctions with SIW are mitered for fine tuning to achieve minimum reflections and improved transmissions at X-band center frequency. Findings Using this method, the measured IL and RLs are found in concord with simulated results in full X-band (8.22–12.4 GHz). RLC T-equivalent and p-equivalent electrical circuits of the proposed design are presented at the end. Practical implications The measurement of the prototype has been carried out by an available low-cost X-band microwave bench and with a Keysight E4416A power meter in the microwave laboratory. Originality/value The transition is fabricated on FR-4 substrate with compact size 14 mm × 21.35 mm × 1.6 mm and hence economical with IL lie within limits 0.6–1 dB and RL is lower than −10 dB in bandwidth 7.05–17.10 GHz. Because of such outstanding fractional bandwidth (FBW: 100.5%), the transition could also be useful for Ku-band with IL close to 1.6 dB.

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A D-band Waveguide-SIW Transition for 6G Applications

Cited by 9 publications

References 14 publications

Directivity‐enhanced planar slot antenna backed by substrate integrated waveguide cavity

Directivity‐enhanced planar slot antenna backed by substrate integrated waveguide cavity

Bandwidth and Gain Enhancement of a CPW Antenna Using Frequency Selective Surface for UWB Applications

Aerodynamic slotted SIW-to-MS line transition using mitered end taper for satellite and RADAR communications

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