WR-2.8 Band Micromachined Rectangular Waveguide Filter

Chen, Zhang; Zheng, Yifan; Kang, Xiaoke; Lü, Bin; Cui, Bohua

doi:10.1007/s10762-013-0028-x

Cited by 17 publications

(7 citation statements)

References 16 publications

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“…

f_{m n l} = \frac{c}{2 π \sqrt{μ_{r} ε_{r}}} \sqrt{{()(, \frac{m π}{a})}^{2} + {()(, \frac{n π}{b})}^{2} + {()(, \frac{l π}{d})}^{2}}

where the subscripts m , n , l refer to the number of standing wave along the width ( a ), height ( b ), length ( d ) of rectangular waveguide cavity, respectively. The number of standing wave along the height is equal to zero for TE102 mode and TE301 mode [12].…”

Section: Filters Designmentioning

confidence: 99%

“…where the subscripts m, n, l refer to the number of standing wave along the width (a), height (b), length (d ) of rectangular waveguide cavity, respectively. The number of standing wave along the height is equal to zero for TE102 mode and TE301 mode [12]. Now we impose the condition that TE102 mode and TE301 mode resonate at the same resonant frequency, then…”

mentioning

confidence: 99%

“…The dimensions of the coupling irises must be determined to fulfil the filter specifications. In former design, the right angle irises were used extensively for coupling between adjacent resonant cavities [11,12]. For obtaining smaller effective irises thickness and aspect ratio, consequently reducing manufacture difficulty, the round corner irises are adopted in these filters to substitute for the right angle irises.…”

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confidence: 99%

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Dual‐mode band‐pass filters made by SU‐8 micromachining technology for terahertz region

et al. 2017

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Two four‐order dual‐mode rectangular waveguide filters centred at 100 GHZ with return loss all better than −19 dB are presented. The filters consist of two cascade resonant cavities suppose TE102/TE301 degenerate modes and three pairs of round corner inductive irises symmetrical with waveguide. Since the introduction of round corner irises and dual‐mode cavities, the filter structures have lower aspect ratio and less resonant cavities, thus the difficulty of fabrication sharply reduced. Single zero exists at the one side of pass‐band because of the same width of two resonant cavities. All the other parameters constant except for the widths of two cavities slightly unequal, two distinct transmission zeros can generate at the same side of pass‐band. UV lithography technology with SU‐8 photo‐resist is used for the fabrication of filters. On the whole, results from measurement are in good agreement with simulation, which fully confirm the validity of design and fabrication methods.

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“…

f_{m n l} = \frac{c}{2 π \sqrt{μ_{r} ε_{r}}} \sqrt{{()(, \frac{m π}{a})}^{2} + {()(, \frac{n π}{b})}^{2} + {()(, \frac{l π}{d})}^{2}}

Section: Filters Designmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Dual‐mode band‐pass filters made by SU‐8 micromachining technology for terahertz region

et al. 2017

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“…Recently, there is an increased interest in utilization of these frequencies in a range of commercial applications, including broadband communications, motivated mainly by the availability of large bandwidths required for the multigigabit short-range wireless communications [5]. Consequently, there is a constant advance in the development of components and systems for millimeter and submillimeter wave frequencies [6][7][8]. Major limiting factor hindering broader exploitation of this spectral region for some time was the shortage of efficient low-cost power sources.…”

Section: Introductionmentioning

confidence: 99%

Graphene-based waveguide resonators for submillimeter-wave applications

Ilić

Bukvic

Ilić

et al. 2016

J. Phys. D: Appl. Phys.

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Abstract. Utilization of graphene covered waveguide inserts to form tunable waveguide resonators is theoretically explained and rigorously investigated by means of full-wave numerical electromagnetic simulations. Instead of using graphene based switching elements, the concept we propose incorporates graphene sheets as parts of a resonator. Electrostatic tuning of the graphene surface conductivity leads to changes in the electromagnetic field boundary conditions at the resonator edges and surfaces, thus producing an effect similar to varying electrical length of a resonator. Presented outline of the theoretical background serves to give phenomenological insight into the resonator behavior, but it can also be used to develop customized software tools for design and optimization of graphene based resonators and filters. Due to the linear dependence of the imaginary part of the graphene surface impedance on frequency, the proposed concept was expected to become effective for frequencies above 100 GHz, which is confirmed by the numerical simulations. Frequency range from 100 GHz up to 1100 GHz, where the rectangular waveguides are used, is considered. Simple, all-graphene based resonators are analyzed first, to assess the achievable tunability and to check the performance throughout the considered frequency range. Graphene-metal combined waveguide resonators are proposed in order to preserve excellent quality factors typical for the type of waveguide discontinuities used. Dependence of resonator properties on key design parameters is studied in detail. Dependence of resonator properties throughout the frequency range of interest is studied using eight different waveguide sections appropriate for different frequency intervals. Proposed resonators are aimed at applications in the submillimeter-wave spectral region, serving as the compact tunable components for the design of bandpass filters and other devices.

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“…In addition to the existing satellite and remote sensing applications as well as specialized biomedical and security purposes , plans for commercial wireless applications will likely motivate rapid technological progress in this area. Accordingly, there is a significant recent progress in the development of submillimeter‐wave components . Size, complexity, and cost of high frequency components are reduced when the tunable and/or reconfigurable components are used.…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic analysis of graphene based tunable waveguide resonators

Ilić

Budimir

2014

Micro & Optical Tech Letters

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The electromagnetic analysis of the proposed graphene based tunable waveguide resonators for submillimeter‐wave applications is presented. Simple design based on the conventional E‐plane resonator is considered. The desired tunability up to 5% is provided by the change of the effective resonator length. Simulation results are presented to validate the argument. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2385–2388, 2014

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WR-2.8 Band Micromachined Rectangular Waveguide Filter

Cited by 17 publications

References 16 publications

Dual‐mode band‐pass filters made by SU‐8 micromachining technology for terahertz region

Dual‐mode band‐pass filters made by SU‐8 micromachining technology for terahertz region

Graphene-based waveguide resonators for submillimeter-wave applications

Electromagnetic analysis of graphene based tunable waveguide resonators

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