Slow-Wave Effect of Substrate Integrated Waveguide Patterned With Microstrip Polyline

Jin, Haiyan; Wang, Kuangda; Guo, Jia; Ding, Shuai; Wu, Ke

doi:10.1109/tmtt.2016.2559479

Cited by 53 publications

(22 citation statements)

References 22 publications

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“…The third‐mode circular SIW cavity is corrugated along the cutting planes. The corrugated edges can effectively increase the line inductance and capacitance effects, which lead to the increase of material equivalent permeability μ e ( ω ) and permittivity ε e ( ω ):

μ_{e} ((), ω) = μ_{me} + \frac{1}{g} \frac{L}{d}, ε_{e} ((), ω) = ε_{me} + g \frac{C}{d} .

…”

Section: Design Proceduresmentioning

confidence: 99%

Compact filtering power divider based on corrugated third‐mode circular SIW cavities

Moznebi

Afrooz

Danaeian

et al. 2020

Micro & Optical Tech Letters

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In this article, a compact single‐layer filtering power divider based on third‐mode circular substrate integrated waveguide (SIW) cavities is proposed. The third‐mode SIW technique is introduced to divide an SIW cavity into three cavities and get 66% size reduction. The proposed power divider is composed of three third‐mode circular SIW cavities within a circuit with the size of a circular SIW cavity. The power is coupled from the input cavity to two output cavities through the electric coupling, separately. To achieve a more size reduction, the designed cavities are corrugated along the cutting planes. By increasing the length of the corrugated edges, the center frequency can be easily shifted to lower frequencies. In order to prove the proposed design procedure, the presented power divider with a second‐order bandpass filtering response is designed and fabricated. Reasonable agreements between the measured and simulated results are found. The measured results show that the power divider achieves an insertion loss of 1.2 dB at 5.61 GHz, return loss of higher than 14 dB, and 3‐dB fractional bandwidth of 7.8%. The results show that this power divider has the advantages of the compact size, high selectivity, and single‐layer structure.

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μ_{e} ((), ω) = μ_{me} + \frac{1}{g} \frac{L}{d}, ε_{e} ((), ω) = ε_{me} + g \frac{C}{d} .

…”

Section: Design Proceduresmentioning

confidence: 99%

Compact filtering power divider based on corrugated third‐mode circular SIW cavities

Moznebi

Afrooz

Danaeian

et al. 2020

Micro & Optical Tech Letters

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show abstract

“…Thus, it is mandatory to solve for Z 1 , Z 2, Z 3 , l 1 and l 2 simultaneously using (14) and (15) with an optimization algorithm. Similar to the previous case, three-section QWLTs are not unique for a given design problem as well as illustrated in Sec.…”

Section: Theoretical Formulationmentioning

confidence: 99%

“…The characteristic impedance Z n and associated length l n in Fig. 2(a) and (b) are determined via the Agilent Genesys EDA software using (11) and (12) or (14) and (15) for two or three sections, respectively. Since QWLTs are modified from the standard QWT, their length l is then set to be equal to a quarter of wavelength multiplied by the reduction ratio p, that is l = p/4 where 0 < p  1.…”

Section: Design and Implementation Of Qwltsmentioning

confidence: 99%

“…However, their lattice design especially in three-dimensional structures is rather complicated since it requires an integration of many unit cells. Furthermore, slow-wave structures, formed by substrate integrated waveguides (SIWs), have also been proposed [12][13][14][15]. The additional metal layer over the ground plane improves the signal carrying efficiency.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

An Implementation of Compact Quarter-Wave-Like- Transformers Using Multi-section Transmission Lines

Torrungrueng¹,

Chudpooti²,

Akkaraekthalin³

et al. 2018

RADIOENGINEERING

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This paper proposes a novel miniaturization technique of quarter-wave transformers (QWTs), implemented using multi-section transmission lines (MSTLs), based on the quarter-wave-like transformer (QWLT) theory. Multi-section QWLT characteristics are derived analytically and solved via appropriate optimization algorithms for associated transmission-line parameters. For an illustration purpose, two-and three-section QWLT prototypes with 50% physical size reduction from the corresponding QWT size operating at 2.4 GHz are fabricated using microstrips and tested. It is found that these prototypes yield acceptable return loss at 2.4 GHz without significant bandwidth reduction, comparing to the QWT result.

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“…Recently, an emerging slow-wave SIW (SW-SIW) guidedwave structure was proposed to reduce the transverse size of conventional SIW [21] and its half-mode form has been used in coupler design successfully [22]. However, application of this emerging structure to other microwave components has seldom been investigated, particularly for the antenna and phase shifter applications.…”

Section: Introductionmentioning

confidence: 99%

Compact Equal-Width Equal-Length Phase Shifter With Slow-Wave Half-Mode Substrate Integrated Waveguide for 5G Applications

et al. 2019

Self Cite

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The emerging fifth-generation (5G) wireless and mobile communications demand highperformance phase shifters to enable the multi-channel transmit/receive systems with phase control ability. In this work, a size-miniaturized wideband phase shifter based on slow-wave half-mode substrate integrated waveguide (SW-HMSIW) is presented. The proposed SW-HMSIW is consisting of conventional HMSIW section and periodically-patterned non-uniform microtrip polyline unit cells. Patterning polyline unit cells in HMSIW can effectively enhance the product of the equivalent permittivity and permeability of SW-HMSIW, so that the slow-wave effect can be exhibited and its associated size reduction will be further achieved. Moreover, lengths and widths of segments of the proposed polyline unit cell can influence the equivalent permittivity and permeability of the SW-HMSIW, and consequently change its phase constant and cutoff frequency. Hence, for a SW-HMSIW with a fixed physical length, an electrical length variation, i.e, phase shift, can be achieved as segments of the polyline employ various lengths or widths. Based on this principle, a wideband equal-width equal-length SW-HMSIW phase shifter is implemented. Measured results are in good agreement with simulated ones, with a phase shift of 90.5 ± 3 degree and a fractional bandwidth of 43.0% achieved. Compared with some similar reported works, the proposed one shows a size reduction more than 80% as well as good magnitude and phase deviations performance. Moreover, its miniaturized size and equal-width equal-length structure make it suitable for the complex multi-channel modules and networks of the 5G applications. INDEX TERMS Effective medium approximation, half-mode substrate integrated waveguide (HMSIW), phase shifter, size miniaturization, slow-wave structure.

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Slow-Wave Effect of Substrate Integrated Waveguide Patterned With Microstrip Polyline

Cited by 53 publications

References 22 publications

Compact filtering power divider based on corrugated third‐mode circular SIW cavities

Compact filtering power divider based on corrugated third‐mode circular SIW cavities

An Implementation of Compact Quarter-Wave-Like- Transformers Using Multi-section Transmission Lines

Compact Equal-Width Equal-Length Phase Shifter With Slow-Wave Half-Mode Substrate Integrated Waveguide for 5G Applications

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