scholarly journals Five‐way radial filtering power divider using back‐to‐back quarter‐mode substrate‐integrated waveguide and microstrip resonator

2021 ◽  
Author(s):  
Shoulei Chen ◽  
Shishan Qi ◽  
Xing Chen ◽  
Guangchao Sun ◽  
Wen Wu
Keyword(s):  
Power Divider ◽  
Substrate Integrated Waveguide ◽  
Microstrip Resonator

A half‐mode substrate integrated waveguide filtering power divider with Fourier‐varying via holes

2021 ◽  
Author(s):  
Osama Hussein ◽  
Khair Al Shamaileh ◽  
Hjalti Sigmarsson ◽  
Said Abushamleh ◽  
Nafati Aboserwal ◽  
...  
Keyword(s):  
Power Divider ◽  
Substrate Integrated Waveguide ◽  
Via Holes

A compact, broadband three-way substrate integrated waveguide power divider with improved isolation

Circuit World ◽  
2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Arun Kumar Gande ◽  
Souma Guha Mallick ◽  
Bijit Biswas ◽  
Sayan Chatterjee ◽  
Dipak Ranjan Poddar
Keyword(s):  
Return Loss ◽  
Power Divider ◽  
Substrate Integrated Waveguide ◽  
Fractional Bandwidth ◽  
Coupling Region ◽  
Content Type ◽  
Power Dividers ◽  
Power Coupling ◽  
Input And Output ◽  
Input Matching

Purpose This paper aims to present a compact, broadband substrate integrated waveguide (SIW) three-way power divider with improved isolation based on six-port SIW coupler. Design/methodology/approach The power coupling among the three output ports occurs due to short openings in the narrow walls of the central SIW channel. Performance improvement in the isolation and return loss among ports is achieved using matching posts placed at the input and output ends of the coupling region. This enhances the coupling between TE10 and TE30 modes. The input matching ports enhance the return loss, whereas the isolation is alleviated by both the input and output matching posts. The bandwidth enhancement is achieved by optimizing the outer SIW channel widths. Findings The measured fractional bandwidth of 27.3% with over 15 dB of isolation and return loss is achieved. The coupling length is 1.55 λg at the centre frequency. The power divider achieves better than 15 dB isolation between non-adjacent output ports. The measured reflection and isolation coefficients are in close agreement with simulated results over 8.2 to 10.8 GHz. Practical implications Isolation between the adjacent and non-adjacent ports is an important parameter as the reflections from these ports will interfere with signals from other ports reducing the fractional bandwidth of the power divider and affecting the overall performance of the transmitters and receivers. Originality/value The authors present the enhancement of isolation between the output non-adjacent ports by optimizing the SIW channel width and matching post in the coupling region to reduce the reflected signals from non-adjacent ports entering into other ports. To the author’s knowledge, this is the only SIW three-way power divider paper showing non-adjacent port isolation among six-port couplers based three-way power dividers.

scholarly journals A SIW Antipodal Vivaldi Array Antenna Design

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
Ying Suo ◽  
Wei Li ◽  
Jianzhong Chen
Keyword(s):  
Reflection Coefficient ◽  
Array Antenna ◽  
Antenna Design ◽  
Power Divider ◽  
Substrate Integrated Waveguide ◽  
Microstrip Lines ◽  
Index Gradient ◽  
Equal Power

A kind of compact SIW (substrate integrated waveguide) Vivaldi array antenna is proposed and analyzed. The antenna consisted of 4 Vivaldi structure radiation elements fed by an equal power divider with SIW technology. The radiation element is composed of antipodal index gradient microstrip lines on both sides of the substrate. The measured reflection coefficient of the array antenna is less than −10 dB from 8.88 GHz to 10.02 GHz. The measured gain of the array antenna is 13.3 dB on 9.5 GHz.

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