Substrate Integrated Waveguide Quasi-Elliptic Filters With Controllable Electric and Magnetic Mixed Coupling

Gong, Ke; Wang, Hong; Zhang, Yan; Chen, Peng; You, Chang Jiang

doi:10.1109/tmtt.2012.2209437

Cited by 124 publications

(95 citation statements)

References 35 publications

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“…Therefore, they have been extensively investigated and various design approaches using the printed circuit board (PCB) or low-temperature co-fired ceramic (LTCC) processes have been proposed. In [5,6], the implementation of the mixed electric and magnetic coupling SIW filters with TZs for high selectivity have been reported, in which an inductive window between two SIW resonators introduces the magnetic coupling, and an embedded short-ended strip is employed to create the electric coupling, however, this filter is relatively large not only because of its planar arranging structure, but also due to suffering from the structure complexity and lack of flexibility, and there will be radiation loss if it operated in millimeter-wave bands. The application of SIW technology makes the realization of filters with the multilayer structure and compact size possible in [7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Second-Order Mixed Coupling Filter With One Controllable Transmission Zero Using Multilayer Substrate Integrated Waveguide

Zhang¹,

Deng²,

Liu³

et al. 2017

PIER Letters

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Abstract-In this letter, a compact second-order mixed coupling bandpass filter (BPF) with one controllable transmission zero (TZ) near the passband edge is presented using multilayer substrate integrated waveguide (SIW). Two arranged circular SIW resonators can be vertically coupled via the circular apertures etched on the middle metal layer while preserving a compact physical size compared with the conventional horizontally coupled filter made of the single layer. The mixed electric and magnetic coupling can be introduced by two etched circular apertures. And one controllable TZ can be created in the lower stopband for the magnetic-dominant or in the upper stopband for the electricdominant. To demonstrate the proposed design method, a multilayer SIW BPF for WLAN application has been designed and fabricated, and the measured results show good agreement with the simulated ones.

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Section: Introductionmentioning

confidence: 99%

Second-Order Mixed Coupling Filter With One Controllable Transmission Zero Using Multilayer Substrate Integrated Waveguide

Zhang¹,

Deng²,

Liu³

et al. 2017

PIER Letters

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“…By building frequency-dependent coupling, the SIW filters with inline resonators [1,2,3] are gained considerable attention and many novel structures have been proposed. On the one hand, compared with the cross-coupled filters [4,5], the inline filters can avoid isolation problems between the input and output.…”

Section: Introductionmentioning

confidence: 99%

“…On the one hand, compared with the cross-coupled filters [4,5], the inline filters can avoid isolation problems between the input and output. The frequency-dependent couplings allow the filter to generate one or more transmission zeros in an inline topology [2,6]. On the other hand, the SIW passive components have many advantages, including low loss, high Q-factor, and easy integratation with other planar circuits [7].…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, the structure formed by stub and two SIW cavity resonators generates new resonant frequency in the lower stopband to deteriorate the stopband response. Another method is to etch lines on the upper face of H-plane iris which can introduce the electric coupling, such as the shortended strip line [2], inter-digital slot-line (ISL) [9], meander line [10] and GCPW line [3,11]. The etched line has no increase in circuit size, but the filter exhibits a poor stopband response due to the spurious passband generated by the etched line resonator.…”

Section: Introductionmentioning

confidence: 99%

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Compact in-line triplet SIW bandpass filter using etched GCPW line resonator

Ding

Tao

2016

IEICE Electron. Express

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This paper presents a novel compact in-line triplet substrate integrated waveguide (SIW) bandpass filter. The filter is composed of two SIW cavity resonators and an etched one-half wavelength grounded coplanar waveguide (GCPW) line resonator. The GCPW line resonator is etched between two SIW cavity resonators to obtain more compact size. A transmission zero on the upper stopband is created by the cross coupling, which allows the filter implementation in in-line with sharp upper cut-off skirts. Finally, a compact third-order 15 dB return loss filter with a fractional bandwidth (FBW) of 7% at 5.5 GHz is designed, fabricated and measured. The experimental results show good agreement between the simulated and measured results. Keywords: etched GCPW line resonator, in-line, triplet, cross coupling, substrate integrated waveguide (SIW) Classification: Microwave and millimeter wave devices, circuits, and systems References

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“…At present, many SIW passive components have been studied, such as filters [10][11][12], power dividers [13], phase shifters [14,15], diplexers [16], antennas [17,18], and so on. However, active SIW circuits are hardly ever used.…”

Section: Introductionmentioning

confidence: 99%

A Substrate Integrated Waveguide to Substrate Integrated Coaxial Line Transition

Liu¹,

Liu²,

Wu³

et al. 2013

PIER C

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Abstract-In this paper, a novel substrate integrated waveguide (SIW) to substrate integrated coaxial line (SICL) transition using the 3 dB SIW power divider (PD) and SIW 180 • phase shifter (PS) is proposed. The SIW-to-SICL transition realizes the easy integration of SIW, SICL, and active device in the same microwave communication system based on the substrate-integrated technology (SIT). To validate the design concept, the prototype has been fabricated and measured. Measurements are in good agreement with simulations, and shows that the SIW-to-SICL transition features ultra-low insertion loss lower than 0.25 dB and with a fractional bandwidth over 10%.

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Substrate Integrated Waveguide Quasi-Elliptic Filters With Controllable Electric and Magnetic Mixed Coupling

Cited by 124 publications

References 35 publications

Second-Order Mixed Coupling Filter With One Controllable Transmission Zero Using Multilayer Substrate Integrated Waveguide

Second-Order Mixed Coupling Filter With One Controllable Transmission Zero Using Multilayer Substrate Integrated Waveguide

Compact in-line triplet SIW bandpass filter using etched GCPW line resonator

A Substrate Integrated Waveguide to Substrate Integrated Coaxial Line Transition

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