A novel miniaturized quarter mode substrate integrate waveguide tunable filter

Zuo, Kaiwei; Zhu, Yongzhong; Xie, Wenxuan; Li, Le

doi:10.1587/elex.15.20180013

Cited by 9 publications

(4 citation statements)

References 8 publications

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“…SIW devices have attracted people's attention due to their high quality factors, but the current research is still lacking in the degree of miniaturization. Current miniaturized SIW tunable resonators are mostly HMSIW (Half‐mode substrate integrated waveguide) structures or QMSIW (Quarter‐mode substrate integrated waveguide) structure, the size is still larger than the microstrip structure. Folding technology is widely used in the research of filter miniaturization, but there are few studies on the application of tunable filter in miniaturization.…”

Section: Introductionmentioning

confidence: 99%

A novel symmetrical folding miniaturized substrate integrated waveguide tunable bandpass filter

Zuo

Zhu

Cheng

et al. 2019

Int J RF Microw Comput Aided Eng

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In order to improve the utilization of spectrum resources, dynamic frequency allocation technology has become a method of spectrum saving. The research of electric tunable filter has received much attention in recent years. Substrate integrated waveguide (SIW) is a new technology of microwave integration in the field. The innovation of this article is to combine the SIW miniaturization technology with tunable technology. In this article, a miniaturized symmetrically folded substrate integrated waveguide (SFSIW) filter is designed. Based on the miniaturization of SIW filter, the center frequency can be adjusted electrically and the measured data show that the tunable filter can achieve eight states under the condition that the bandwidth below −3 dB remains approximately constant 300 MHz. The center frequency varies from 3.23 GHz to 3.9 GHz. The range of the filter's insertion loss is 1.2 dB to 2.04 dB, and the return loss is higher than 20.9 dB. This filter has practical value in the electronic countermeasures of military communication.

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Section: Introductionmentioning

confidence: 99%

A novel symmetrical folding miniaturized substrate integrated waveguide tunable bandpass filter

Zuo

Zhu

Cheng

et al. 2019

Int J RF Microw Comput Aided Eng

Self Cite

View full text Add to dashboard Cite

show abstract

“…Some achievements have also been made in the tunable aspect of SIW filter: In [19], The frequency and bandwidth can be adjusted by using electric element and magnetic ferrite on the basis of half-mode substrate integrated waveguide. In [20], the frequency is tuned by using RF MEMS switch at the quarter mode substrate integrate waveguide resonator. However, the fully tunable filter that can implement a variety of parameters may not be well integrated with the SIW technique.…”

Section: Introductionmentioning

confidence: 99%

A high stability fully tunable filter with frequency, bandwidth and transmission zero tuning

Zhang

Zhu

Meng

et al. 2019

IEICE Electron. Express

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Based on the double folded 1/4 mode substrate integrated waveguide (DFQMSIW) resonator, a two-pole DFQMSIW tunable filter with frequency, bandwidth and transmission zeros tuning is proposed in this paper. In order to increase the stability of the filter, the constant bandwidth can be maintained by changing the coupling coefficient by two varactor diodes when tuning frequency and transmission zeros. The center frequency can be tuned in the range of 1.1 GHz-1.9 GHz, transmission zeros can be tuned from 1.41 GHz to 1.5 GHz with bandwidth unchanged, and bandwidth can be tuned from 120 MHz to 200 MHz. The insertion loss is about −1.3 dB to −3 dB.

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“…Several microwave and millimeter-wave passive components based on substrate integrated waveguide (SIW) technology have been studied and published, such as power divider, coupler, filter, phase shifter, antenna, etc [1,2,3,4,5,6,7,8,9,10]. The most prominent advantages for SIW are its simple structure, low radiation, low insertion loss, and low cost [11].…”

Section: Introductionmentioning

confidence: 99%

3-D empty substrate integrated waveguide phase shifter with equal length

Peng

Zhao

Dong

et al. 2019

IEICE Electron. Express

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In this letter, a novel 3-D empty substrate integrated waveguide (ESIW) phase shifter with equal length has been proposed. The vertical transitions have been introduced into 3-D ESIW phase shifter in the propagation path. Based on it, the different total lengths of phase shifters in the propagation path and the equal total lengths of phase shifters in the external structure are compatible. The phase shifter consists of multi-layer PCB: top layer, interlayer, middle layer, ESIW PCB, and bottom layer. The theory and design process of ESIW phase shifter have been explained and discussed in detail. To demonstrate its feasibility, the 3-D ESIW phase shifters with equal external length are designed, manufactured and measured. Final results show that the phase shifts of 45.2°±3.7° and 89.7°±4.7° can be achieved over the entire Ka-band. Besides, the return losses and the insertion losses are better than 12.5 dB, and 1.9 dB, respectively.

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A novel miniaturized quarter mode substrate integrate waveguide tunable filter

Cited by 9 publications

References 8 publications

A novel symmetrical folding miniaturized substrate integrated waveguide tunable bandpass filter

A novel symmetrical folding miniaturized substrate integrated waveguide tunable bandpass filter

A high stability fully tunable filter with frequency, bandwidth and transmission zero tuning

3-D empty substrate integrated waveguide phase shifter with equal length

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