A Novel Impedance Matching Approach with Oblique Waveguide for Arbitary Rectangular Waveguide Devices

2021 ◽  
Author(s):  
Qinghe Zhuang ◽  
Zhicheng Luo ◽  
Min Liu ◽  
Guang Yang ◽  
Yunling Miao ◽  
...  
Keyword(s):  
Rectangular Waveguide ◽  
Impedance Matching ◽  
Waveguide Devices

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

2015 ◽  
Vol 8 (2) ◽  
pp. 185-191 ◽  
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.

Ka Band Transition between Rectangular Waveguide and Substrate Integrated Waveguide

2012 ◽  
Vol 443-444 ◽  
pp. 362-365 ◽  
Author(s):  
Ya Zhou Dong ◽  
Shi Wei Dong ◽  
Zhong Bo Zhu ◽  
Ying Wang
Keyword(s):  
Rectangular Waveguide ◽  
Impedance Matching ◽  
Ultra Wideband ◽  
Substrate Integrated Waveguide ◽  
Low Loss ◽  
Ka Band ◽  
Ansoft Hfss ◽  
Tapered Waveguide ◽  
Band Transition ◽  
Better Than

This paper presents novel designs of Ka band transitions between standard rectangular waveguide and substrate integrated waveguide (SIW). The proposed transitions can provide simultaneous field and impedance matching. The transition with a height-tapered waveguide exhibits outstanding low-loss performance over an ultra-wideband range (entire Ka-band). And the other one with Chebyshev transformers has a compact profile and low loss better than 2dB in a bandwidth of 11GHz at Ka band. The simulation and analysis of the transitions are carried out with Ansoft HFSS.

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

2019 ◽  
Vol 9 (3) ◽  
pp. 389 ◽  
Author(s):  
Roberto Vincenti Gatti ◽  
Riccardo Rossi ◽  
Marco Dionigi
Keyword(s):  
Rectangular Waveguide ◽  
Circuit Simulation ◽  
Impedance Matching ◽  
Design Procedure ◽  
Substrate Integrated Waveguide ◽  
Matching Network ◽  
Waveguide Section ◽  
Full Wave ◽  
Matching Networks ◽  
Waveguide Transition

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.

scholarly journals A Wideband Waveguide Antenna with Nearly Equal E- and H-Plane Radiation Patterns

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Mei Qing Qi ◽  
He-Xiu Xu ◽  
Hui Feng Ma ◽  
Mou Ping Jin ◽  
Wei Wang ◽  
...  
Keyword(s):  
Radiation Pattern ◽  
Rectangular Waveguide ◽  
Simple Structure ◽  
Impedance Matching ◽  
Cross Polarization ◽  
Radiation Patterns ◽  
Fractional Bandwidth ◽  
Excellent Performance ◽  
Waveguide Transition ◽  
Matching Performance

A novel wideband waveguide antenna with excellent performance is proposed, which is composed of a coaxial-waveguide transition and an open-ended rectangular waveguide loaded with a pair of horizontal umbrella-shaped metallic brims. The brims perpendicular to two broad walls of the waveguide are constructed to modulate the antenna to radiate nearly identical E- and H-plane radiation patterns. A wideband impedance matching performance is achieved with a fractional bandwidth of 40% through the introduction of short-stepped ladders. The antenna has the advantages of simple structure, symmetric radiation pattern, low-cross polarization, moderate back lobe, and almost constant beamwidth.

Sign in / Sign up

Export Citation Format

Share Document