Compact planar substrate‐integrated waveguide diplexers with wide‐stopband characteristics

Zhou, Kang; Zhou, Chi; Wu, Wen

doi:10.1002/mmce.22179

Cited by 10 publications

(6 citation statements)

References 35 publications

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“…Compared with widestopband SIW diplexers in Ref. [10][11][12] and our previous work, 13 larger frequency ratios, wider stopband bandwidths, and more compact circuit sizes are realized in this work. Table 2 also lists the comparisons between the proposed SIW dual-band BPFs and the related designs with widely separated passbands [2][3][4][5][6]8 or wide-stopband.…”

Section: Comparisonmentioning

confidence: 92%

“…Compared with wide‐stopband SIW diplexers in Ref. [10–12] and our previous work, 13 larger frequency ratios, wider stopband bandwidths, and more compact circuit sizes are realized in this work.…”

Section: Synthesis and Design Of Siw Diplexers And Dual‐band Bpfmentioning

confidence: 94%

“…Table 2 lists the comparisons between the proposed SIW diplexers and the related designs with widely separated passbands 4,7,9 or wide-stopband. [10][11][12][13] Compared with SIW diplexer in Ref. [4], our designs realize higher orders, better isolations, and wide-stopband.…”

Section: Comparisonmentioning

confidence: 95%

“…Table 2 lists the comparisons between the proposed SIW diplexers and the related designs with widely separated passbands 4,7,9 or wide‐stopband 10–13 . Compared with SIW diplexer in Ref.…”

Section: Synthesis and Design Of Siw Diplexers And Dual‐band Bpfmentioning

confidence: 99%

“…In addition, despite multiple wide-stopband single-band BPFs have been realized, the improvement of stopband performance for dual-band components has barely been implemented. Wide-stopband SIW diplexers [10][11][12][13] and dualband BPFs 13,14 have been proposed based on the modes suppression technique and harmonic staggered technique, further extending the stopband. However, the advancement of existing large circuit sizes, complex multilayered structures, and limited stopband bandwidths is still challenging.…”

Section: Introductionmentioning

confidence: 99%

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Wide‐stopband substrate‐integrated waveguide diplexers and dual‐band bandpass filter with large frequency ratios

Xie

Zhou

et al. 2022

Int J RF Mic Comp-Aid Eng

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Compact substrate‐integrated waveguide (SIW) diplexers and dual‐band bandpass filter (BPF) with widely separated passbands and wide‐stopband are proposed for the first time based on half‐mode substrate‐integrated rectangular cavity (HMSIRC). Thanks to the dual‐mode cavities and two respective channels, the frequencies and couplings of the two passbands can be flexibly controlled. To conquer the limitation of conventional full‐mode cavity, the use of HMSIRC could intrinsically reject TE201 mode and many higher‐order even modes, simultaneously realizing wide‐stopband and widely separated passbands based on TE101 and TE102 modes. Moreover, the properly arranged internal coupling windows, which could intrinsically suppress the specific unwanted modes by sufficiently employing the existing design degrees of freedom, help further separate the two passbands and extend the stopband. The passband and stopband responses are systematically analyzed for different frequency ratios with the realizable frequency ratio and stopband bandwidth up to 1.91 and 2.65f1, respectively, which supplies the design guideline for SIW diplexers and dual‐band BPFs with widely separated passbands and wide‐stopband. Two SIW diplexers and an SIW dual‐band BPF with frequency ratios of 1.72, 1.85, and 1.72 are synthesized and designed for demonstration, realizing the rejection levels and stopband bandwidths of 20 dB/2.34f1, 35 dB/2.36f1, and 20 dB/2.6f1, respectively.

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Section: Comparisonmentioning

confidence: 92%

Section: Synthesis and Design Of Siw Diplexers And Dual‐band Bpfmentioning

confidence: 94%

Section: Comparisonmentioning

confidence: 95%

Section: Synthesis and Design Of Siw Diplexers And Dual‐band Bpfmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Wide‐stopband substrate‐integrated waveguide diplexers and dual‐band bandpass filter with large frequency ratios

Xie

Zhou

et al. 2022

Int J RF Mic Comp-Aid Eng

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A compact, low‐loss, and wide passband ratio substrate integrated waveguide triplexer based on complementary split ring resonators for multiband applications

Xuan Loi,

Le Ha,

Chi Hieu

et al. 2024

Circuit Theory & Apps

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SummaryIn this paper, a design of a substrate‐integrated waveguide (SIW) triplexer with improved low‐loss performance, passband ratio, and compactness based on the complementary split ring resonator (CSRR) structure is presented. The proposed triplexer operates at three passbands of 6, 8, and 10 GHz that correspond to the passband ratios of 1.33 and 1.67. By appropriately designing square CSRRs on the surface of the SIW structure, the low‐loss and compact resonator filters below the cut‐off frequency of the SIW at each operation frequency can be realized. The wide passband ratio is obtainable by adjusting the dimensions of the T‐junction. The measured results show the minimum insertion losses of 1.5, 1.4, and 1.9 dB at 6, 8, and 10 GHz, respectively. In addition, the minimum measured return losses are −9.33, −11.3, and −12.4 dB at the corresponding three passbands. The measured isolation between output ports is better than −17 dB in the frequency range from 5 to 11 GHz. The measured results agree well with simulations which are conducted by the CST Microwave Studio simulator. The proposed triplexer is designed on a cost‐effective RO4003C substrate with a compact size of 35 25 mm2

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Compact dual‐band inverted‐microstrip ridge gap waveguide diplexer

Wang¹,

Xue

Mao³

et al. 2021

Int J RF Microw Comput Aided Eng

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A compact dual-band inverted microstrip ridge gap waveguide (IMRGW) diplexer composed of four dual-mode IMRGW resonators and an IMRGW T-junction matching network is proposed in this letter. The dual-band diplexer is based on a dual-mode IMRGW resonator which can produce both the inverted microstrip resonant mode and the cavity resonant mode. Two resonant modes of the IMRGW resonator are highly independent, so the passbands of dual-band IMRGW diplexer can be easily tuned to the desired frequencies. A second-order dual-band IMRGW diplexer is designed and simulated. The simulated passbands of the second-order dual-band IMRGW diplexer are 13.

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Compact planar substrate‐integrated waveguide diplexers with wide‐stopband characteristics

Cited by 10 publications

References 35 publications

Wide‐stopband substrate‐integrated waveguide diplexers and dual‐band bandpass filter with large frequency ratios

Wide‐stopband substrate‐integrated waveguide diplexers and dual‐band bandpass filter with large frequency ratios

A compact, low‐loss, and wide passband ratio substrate integrated waveguide triplexer based on complementary split ring resonators for multiband applications

Compact dual‐band inverted‐microstrip ridge gap waveguide diplexer

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