Broadband Right-Angle Rectangular Waveguide to Substrate Integrated Waveguide Transition with Distributed Impedance Matching Network

A broadband right-angle rectangular waveguide to substrate integrated waveguide transition for hybrid RWG-SIW (rectangular waveguide–substrate integrated waveguide) feeding networks is presented. The narrower return loss bandwidth issue with respect to in-line configurations is addressed with the introduction of a multi-section matching network consisting of a number of symmetric E-plane irises in the rectangular waveguide section. A hybrid design procedure based on circuit simulation and full-wave optimization is outlined and adopted to synthesize three matching networks with respectively one, two, and three irises, according to the bandwidth to be covered. The design procedure is experimentally validated with a proof-of-concept prototype.

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Wideband Rectangular Waveguide to Substrate Integrated Waveguide (SIW) E-Plane T-Junction

Electronics ◽

10.3390/electronics10030264 ◽

2021 ◽

Vol 10 (3) ◽

pp. 264

Author(s):

Roberto Vincenti Gatti ◽

Riccardo Rossi ◽

Marco Dionigi

Keyword(s):

Rectangular Waveguide ◽

Design Procedure ◽

Beam Forming ◽

Substrate Integrated Waveguide ◽

Proof Of Concept ◽

Hybrid Beam ◽

Full Wave ◽

Matching Networks ◽

Hybrid Circuit ◽

Good Agreement

A broadband rectangular waveguide to substrate integrated waveguide power divider for hybrid beam forming networks is presented. Rectangular waveguide symmetric E-plane irises are used to realize a multi-section matching network. A hybrid circuit and full-wave design procedure are described and adopted to synthesize three matching networks with one, two, and three irises, progressively increasing the bandwidth and exceeding the state of the art in the last two cases. Three proof-of-concept prototypes are manufactured and tested to validate the design procedure. Good agreement between simulated and measured performance confirms the validity of the proposed solution.

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Overcoming the Realization Problems of Wideband Matching Circuits

Infocommunications journal ◽

10.36244/icj.2018.4.5 ◽

2018 ◽

pp. 31-36

Author(s):

Balázs Matolcsy ◽

Attila Zólomy

Keyword(s):

Design Process ◽

Circuit Simulation ◽

Impedance Matching ◽

Microwave Circuit ◽

Design Rules ◽

Analytical Design ◽

Calculation Technique ◽

Matching Networks ◽

Practical Design

During the analytical design process of wideband impedance matching major problems may arise, that might lead to non-realizable matching networks, preventing the successful impedance matching. In this paper two practical design rules and a simplified equation is presented, supporting the design of physically realizable impedance matching networks. The design rules and calculation technique introduced by this paper is summarized, and validated by microwave circuit simulation examples.

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

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.130-134.1990 ◽

2011 ◽

Vol 130-134 ◽

pp. 1990-1993 ◽

Cited By ~ 1

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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Broadband substrate integrated waveguide to rectangular waveguide transition with fin-line

Electronics Letters ◽

10.1049/el:20093214 ◽

2009 ◽

Vol 45 (4) ◽

pp. 205 ◽

Cited By ~ 22

Author(s):

C.L. Zhong ◽

J. Xu ◽

Z.Y. Zhi ◽

C.X. Jin

Keyword(s):

Rectangular Waveguide ◽

Substrate Integrated Waveguide ◽

Waveguide Transition ◽

Fin Line

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A wideband right-angle transition between thin substrate integrated waveguide and rectangular waveguide based on multi-section structure

International Journal of Microwave and Wireless Technologies ◽

10.1017/s1759078715000185 ◽

2015 ◽

Vol 8 (2) ◽

pp. 185-191 ◽

Cited By ~ 2

Author(s):

Teng Li ◽

Wenbin Dou

Keyword(s):

Insertion Loss ◽

Rectangular Waveguide ◽

Return Loss ◽

Impedance Matching ◽

Experimental Results ◽

Center Frequency ◽

Substrate Integrated Waveguide ◽

Rectangular Aperture ◽

Section Structure ◽

Better Than

In this paper, a novel wideband right-angle transition between thin substrate integrated waveguide (SIW) and rectangular waveguide (RWG) based on multi-section structure operating at center frequency 31.5 GHz is presented. A multi-section SIW with a rectangular aperture etched on the broad wall and two stepped ridges embedded in the RWG flange are introduced to obtain a wide impedance matching. The simulations show that the bandwidth with return loss better than 20 dB is about 17 GHz. In order to verify our designs, two back-to-back transitions with different lengths are fabricated and measured. The experimental results agree well with simulations. The proposed component shows an insertion loss less than 0.44 dB and a return loss better than 14.5 dB over 12.15 GH, which corresponds to 38.57% bandwidth.

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