scholarly journals Compact balanced bandpass filter design using miniaturised substrate integrated waveguide cavities

2018 ◽  
Vol 12 (13) ◽  
pp. 2030-2033 ◽  
Author(s):  
Min‐Hua Ho ◽  
Cheng‐You Hou ◽  
Chung‐I G. Hsu ◽  
Keh‐Yi Lee
Keyword(s):  
Bandpass Filter ◽  
Filter Design ◽  
Substrate Integrated Waveguide ◽  
Waveguide Cavities

scholarly journals Novel Compact Bandpass Filter Based on Folded Half Mode Substrate Integrated Waveguide Cavities

2010 ◽  
Vol 10 (3) ◽  
pp. 179-182 ◽  
Author(s):  
Ke Gong ◽  
Wei Hong ◽  
Jixin Chen ◽  
Hongjun Tang ◽  
Debin Hou ◽  
...  
Keyword(s):  
Bandpass Filter ◽  
Substrate Integrated Waveguide ◽  
Waveguide Cavities

Compact bandpass filter with wide-stopband using substrate integrated waveguide cavities and short-circuited coplanar line

2019 ◽  
Vol 12 (5) ◽  
pp. 345-351
Author(s):  
Amit Ranjan Azad ◽  
Akhilesh Mohan
Keyword(s):  
Resonant Frequency ◽  
Bandpass Filter ◽  
Structural Parameters ◽  
Center Frequency ◽  
Substrate Integrated Waveguide ◽  
Third Order ◽  
Coplanar Line ◽  
Compact Size ◽  
Measurement Results ◽  
Waveguide Cavities

AbstractThis article presented a compact bandpass filter with wide-stopband performance. Two substrate integrated waveguide (SIW) cavities and a short-circuited coplanar line introduced between the two cavities are used to realize a compact third-order bandpass filter. The passband is generated by combining the resonant frequency of TE101 mode of the SIW cavities and the fundamental resonant frequency of the short-circuited coplanar line. The size of the proposed filter reduces significantly in comparison with conventional third-order SIW filters. Moreover, the center frequency (CF) and the bandwidth of the filter can be controlled by adjusting the structural parameters of the filter. In addition, the first higher-order mode TE102 of the SIW cavity is suppressed by minimizing the coupling of TE102 mode in order to obtain wide-stopband performance. The proposed filter is designed, fabricated, and measured, and the simulation and measurement results show a good agreement. The filter exhibits compact size, low loss, and a rejection higher than 20 dB up to 1.94f0.

scholarly journals A Bandpass Filter Using Half Mode SIW Structure with Step Impedance Resonator

Electronics ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 51
Author(s):  
Min-Hang Weng ◽  
Chin-Yi Tsai ◽  
De-Li Chen ◽  
Yi-Chun Chung ◽  
Ru-Yuan Yang
Keyword(s):  
Insertion Loss ◽  
Return Loss ◽  
Bandpass Filter ◽  
Filter Design ◽  
Design Concept ◽  
Center Frequency ◽  
Substrate Integrated Waveguide ◽  
Design Curve ◽  
Transmission Zeros ◽  
Measured Response

This paper presents a miniaturized bandpass filter, which uses half mode substrate integrated waveguide (HMSIW) structure with embedded step impedance structure (SIS). By embedding the stepped impedance structure into the top metal of the waveguide cavity, the center frequency can be quickly shifted to a lower frequency. The operating center frequency of the proposed bandpass filter (BPF) using HMSIW resonators with embedded SIS is tunable as functions of the parameters of the SIS. The design curve is provided. A filter example of the center frequency of the filter at 3.5 GHz is fabricated and measured, having the insertion loss |S21| less than 3 dB, and the return loss |S11| greater than 10 dB. The transmission zeros are located at 2.95 GHz and 3.95 GHz on both sides of the passband, both of which are lower than 30 dB. The simulation result and the measured response conform to the proposed design concept. The proposed HMSIW filter design is in line with the current 5G communication trend.

scholarly journals Compact Dual-Mode Substrate Integrated Waveguide Coaxial Cavity for Bandpass Filter Design

2016 ◽  
Vol 26 (6) ◽  
pp. 386-388 ◽  
Author(s):  
Miguel A. Sanchez-Soriano ◽  
Stefano Sirci ◽  
J. D. Martinez ◽  
Vicente E. Boria
Keyword(s):  
Bandpass Filter ◽  
Filter Design ◽  
Substrate Integrated Waveguide ◽  
Dual Mode ◽  
Coaxial Cavity
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