scholarly journals Wideband transition from substrate integrated waveguide to rectangular waveguide in K-band by width profiling

2020 ◽  
Vol 14 (13) ◽  
pp. 1488-1492
Author(s):  
Yunhao Fu ◽  
Liang Gong ◽  
King Yuk Chan ◽  
Rodica Ramer
Keyword(s):  
Rectangular Waveguide ◽  
Substrate Integrated Waveguide ◽  
Wideband Transition ◽  
K Band

A Novel Wideband transition from Substrate Integrated Waveguide to Rectangular Waveguide

2020 ◽  
Vol 10 ◽  
Author(s):  
Keyur Mahant ◽  
Hiren Mewada ◽  
Amit Patel ◽  
Alpesh Vala ◽  
Jitendra Chaudhari
Keyword(s):  
Rectangular Waveguide ◽  
Printed Circuit Board ◽  
Low Cost ◽  
Single Layer ◽  
Circuit Board ◽  
Substrate Integrated Waveguide ◽  
Ka Band ◽  
Better Than ◽  
Millimeter Wave Circuits ◽  
Wideband Transition

Aim: In this article, wideband substrate integrated waveguide (SIW) and rectangular waveguide (RWG) transition operating in Ka-band is proposed Objective: In this article, wideband substrate integrated waveguide (SIW) and rectangular waveguide (RWG) transition operating in Ka-band is proposed. Method: Coupling patch etched on the SIW cavity to couple the electromagnetic energy from SIW to RWG. Moreover, metasurface is introduced into the radiating patch to enhance bandwidth. To verify the functionality of the proposed structure back to back transition is designed and fabricated on a single layer substrate using standard printed circuit board (PCB) fabrication technology. Results: Measured results matches with the simulation results, measured insertion loss is less than 1.2 dB and return loss is better than 3 dB for the frequency range of 28.8 to 36.3 GHz. By fabricating transition with 35 SRRs bandwidth of the proposed transition can be improved. Conclusion: The proposed transition has advantages like compact in size, easy to fabricate, low cost and wide bandwidth. Proposed structure is a good candidate for millimeter wave circuits and systems.

Additive technology applied to the realization of K-band microwave terminations: reproducibility improvement

2018 ◽  
Vol 10 (1) ◽  
pp. 3-8
Author(s):  
Azar Maalouf ◽  
Ronan Gingat ◽  
Vincent Laur
Keyword(s):  
3D Printing ◽  
Frequency Band ◽  
Rectangular Waveguide ◽  
Three Dimensional ◽  
Low Density ◽  
Support Material ◽  
Additive Technology ◽  
3D Printed ◽  
K Band

This study examines K-band rectangular waveguide terminations with three-dimensional (3D)-printed loads, and proposes an Asymmetrical Tapered Wedge topology. This geometry shows a good tradeoff between microwave performance and 3D-printing issues (printing directions and support material requirements), thus improving noticeably the reproducibility of the devices. The effect of the density of the 3D-printed load on the reflection parameter of the termination was investigated. Even for a low density, reflection level remained below −27.5 dB between 18 and 26.5 GHz. Reproducibility was demonstrated by the characterization of six loads that were 3D printed under the same conditions. Measurements demonstrate that a maximum reflection parameter level of −33.5 dB can be ensured over the whole frequency band without any post-machining of the 3D-printed devices.

Full‐band transition from substrate integrated waveguide to rectangular waveguide

2015 ◽  
Vol 51 (14) ◽  
pp. 1089-1090 ◽  
Author(s):  
Hongyeal Lee ◽  
Sohyeun Yun ◽  
Manseok Uhm ◽  
Inbok Yom
Keyword(s):  
Rectangular Waveguide ◽  
Substrate Integrated Waveguide ◽  
Full Band ◽  
Band Transition

scholarly journals Wideband Transition for Increased-Height Empty Substrate Integrated Waveguide

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 149406-149413
Author(s):  
Juan A. Martinez ◽  
Angel Belenguer ◽  
Juan J. De Dios ◽  
Hector Esteban Gonzalez ◽  
Vicente E. Boria
Keyword(s):  
Substrate Integrated Waveguide ◽  
Wideband Transition

Broadband Transition between Substrate Integrated Waveguide (SIW) and Rectangular Waveguide for Millimeter-Wave Applications

2011 ◽  
Vol 130-134 ◽  
pp. 1990-1993 ◽  
Author(s):  
Kuang Da Wang ◽  
Wei Hong ◽  
Ke Wu
Keyword(s):  
Millimeter Wave ◽  
Rectangular Waveguide ◽  
Return Loss ◽  
Substrate Integrated Waveguide ◽  
Full Wave ◽  
Vertical Transition ◽  
W Band ◽  
Relative Bandwidth ◽  
Is Design ◽  
Better Than

In this paper, a broadband and simple vertical transition between substrate integrated waveguide and standard air-filled rectangular waveguide is design and experimentally verified. From full-wave simulation of the structure, a relative bandwidth of 19.5% in W-band with return loss better than 20dB is reached. Then, five copies of back-to-back connected transitions are fabricated on RT/Duroid 5880 substrate. The experimental results show that the transition pairs have an average of 15% relative bandwidth with return loss better than 12dB and insert loss lower than 1.2dB. To explain the differences between simulated and tested results, an error analysis is presented.

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