Mode Matching design of substrate integrated waveguide diplexers

Kordiboroujeni, Zamzam; Børnemann, Jens

doi:10.1109/mwsym.2013.6697609

Cited by 18 publications

(16 citation statements)

References 8 publications

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“…Extra T‐junctions are usually needed in traditional SIW diplexers to meet the matching and isolation requirements between the input port and the two separate channel filters, and the T‐junctions always occupy considerable sizes and would definitely increase the design complexity and channel insertion losses (ILs). Several solutions have been investigated and explored to eliminate the T‐junctions in SIW diplexers, of which one is based on the so‐called all‐resonator topologies using the coupling matrix optimization synthesis design technique proposed in Reference .…”

Section: Introductionmentioning

confidence: 99%

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

Zhou

2020

Int J RF Microw Comput Aided Eng

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Compact planar substrate-integrated waveguide (SIW) diplexers with widestopband characteristics are presented for the first time based on collaborative multispurious mode suppression techniques including the harmonic staggered technique, centered coupling windows, and offset-centered output ports. The coupling scheme using common dual-mode resonator coupled with multiple single-mode resonators is adopted here to eliminate the Tjunctions for size and loss reduction, and the dual-mode coupling controlling technique we previously proposed is also employed to allocate the fractional bandwidths (FBWs) of the two channels flexibly based on the FBW design graph. Additionally, by combining the harmonic staggered technique, centered coupling windows, and offset-centered output ports, good out-of-band rejections can be achieved and excellent wide-stopband characteristics have been implemented intrinsically. Two prototypes including second-order and third-order SIW diplexers are synthesized, designed, fabricated, and tested as demonstrations, extending the stopbands to 1.78f 1 and 2.04f 1 with the rejection levels better than 17.5 and 20 dB, respectively. K E Y W O R D Sdiplexers, dual-mode junction cavity, flexibly allocated bandwidths, multispurious mode suppression techniques, substrate-integrated waveguide (SIW), wide-stopband characteristics

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Section: Introductionmentioning

confidence: 99%

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

Zhou

2020

Int J RF Microw Comput Aided Eng

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“…Bandpass filters are indispensable components in RF/microwave wireless communication systems [1][2][3][4][5]. Filter is a device that commonly used in telecommunication system.…”

Section: Introductionmentioning

confidence: 99%

Closed-loop ring resonator topology for bandpass filter applications

Wahab

Tan

Hushim

2020

IJEECS

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This paper presents a single mode pseudo-elliptic bandpass resonator based on closed-loop ring topology. The resonator is built from six quarter wavelength transmission lines to form a square closed-loop ring structure. This structure creates transmission zeros at the lower and upper sidebands so that high selectivity bandpass filter response is achieved. The advantage of this topology is that the design is less complex since no perturbation is needed on the ring lines for creation of transmission zeros. Higher-order filters can be constructed by introducing quarter-wavelength coupled-lines, coupled at both input and output of the closed-loop ring resonator. For proof of concept, the filters are designed at 10 GHz up to 3rd order, simulated using full-wave electromagnetic simulator on microstrip substrate, FR-4 with characteristics given as Ԑr = 4.70, h = 1.499 mm and tan δ = 0.012. The filters are simulated and responses are found to be agreeable with the proposed idea.

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“…The channels of this C‐band diplexer are located at 4.7 and 5.8 GHz. In 2013, a K‐band SIW diplexer with bands located at 18.15 and 19 GHz is introduced , which has been designed using an efficient mode‐matching technique (MMT) proposed for SIW structures . The SIW diplexer is similar in configuration to and , but operates at a significantly higher frequency.…”

Section: Introductionmentioning

confidence: 99%

“…In all SIW diplexers mentioned earlier, except for the one reported in , the optimization and tuning steps of the SIW diplexer design are carried out using full‐wave simulators. This is a tedious and cumbersome task, considering the large number of optimization parameters present in SIW diplexer designs.…”

Section: Introductionmentioning

confidence: 99%

“…This is a tedious and cumbersome task, considering the large number of optimization parameters present in SIW diplexer designs. In contrast, the MMT approach adopted in for designing SIW diplexers is an order of magnitude faster than commercially available field solvers. However, the presented MMT analysis cannot be directly applied for the analysis of SIW structures including T‐junctions and corners.…”

Section: Introductionmentioning

confidence: 99%

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Mode‐matching analysis and design of substrate integrated waveguide T‐junction diplexer and corner filter

Kordiboroujeni

Børnemann

2014

Int J Numerical Modelling

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SUMMARYThe mode-matching technique is deployed in this paper in order to analyze and design a substrate integrated waveguide (SIW) T-junction diplexer in Ku-band. The diplexer has bandwidths of 4.12% and 3.79% at 14.55 and 15.85 GHz, respectively. Also in Ku-band, an SIW corner filter is analyzed and designed with the same technique. Analytical results are compared with simulated data obtained from commercially available field solvers such as CST Microwave Studio and ANSYS HFSS. Excellent agreement between analytical and simulated data is achieved.

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Mode Matching design of substrate integrated waveguide diplexers

Cited by 18 publications

References 8 publications

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

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

Closed-loop ring resonator topology for bandpass filter applications

Mode‐matching analysis and design of substrate integrated waveguide T‐junction diplexer and corner filter

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