W-Band Waveguide Bandpass Filters Fabricated by Micro Laser Sintering

Salek, Milan; Shang, Xiaobang; Roberts, Robert C.; Lancaster, M.J.; Boettcher, Falko; Weber, Daniel; Starke, Thomas

doi:10.1109/tcsii.2018.2824898

Cited by 55 publications

(27 citation statements)

References 23 publications

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“…Promising results have already been reported in the literature up to 100 GHz using MLS technology to achieve the highest frequency metal 3D printed filter so far reported [14]. We propose to assess in the next section achievable performances up to 325 GHz using waveguide and horn antenna test vehicles.…”

Section: Th2d-4mentioning

confidence: 99%

“…This alloy exhibits a limited electrical conductivity of 1.25 × 10e7 S/m which explains the experienced larger insertion loss. As proposed in [14], this issue could be easily solved by electroplating a few μm thick copper layer on the surface of the 3D printed part (increasing the electrical conductivity by a factor of ~5). As illustrated Fig.…”

Section: Fig 4 Measured and Simulated Insertion Loss Of Wr5 Waveguimentioning

confidence: 99%

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Evaluation of Micro Laser Sintering Metal 3D-Printing Technology for the Development of Waveguide Passive Devices up to 325 GHz

Fiorese

Goncalves

Bocio

et al. 2020

2020 IEEE/MTT-S International Microwave Symposium (IMS)

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In this paper, we propose an assessment up to 325 GHz of Micro Laser Sintering (MLS) metal 3D-Printing technology in order to achieve lightweight and cost-effective millimeter wave (mmW) passive function. We first designed and manufactured a bended WR5 waveguide in order to assess achievable roughness and insertion loss. In a second step, an existing 240 GHz choke horn antenna design, previously manufactured using metal coated Stereo Lithography Apparatus (SLA) and Selective Laser Melting (SLM) technologies, has been prototyped using MLS. Measured performances of the MLS antenna prototype have been benchmarked with SLA and DMLS ones. Achieved performances are promising since without any post processing MLS compete up to 325 GHz with metal coated SLA technology while it enables a metallic part manufactured in a single piece.

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Section: Th2d-4mentioning

confidence: 99%

Section: Fig 4 Measured and Simulated Insertion Loss Of Wr5 Waveguimentioning

confidence: 99%

Evaluation of Micro Laser Sintering Metal 3D-Printing Technology for the Development of Waveguide Passive Devices up to 325 GHz

Fiorese

Goncalves

Bocio

et al. 2020

2020 IEEE/MTT-S International Microwave Symposium (IMS)

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“…EM simulations show little difference between the structures in Fig.5(a) and Fig.5(b), in terms of insertion/return loss as well as the radiation. In future works, electroless plating [27] can be used to replace the electroplating process used in this paper to avoid the use of these slots, hence no radiation will be generated. Finally, the detailed design parameters for the transition are included in Table II.…”

Section: B Air-filled Rectangular-coax-to-waveguide Transitionsmentioning

confidence: 99%

A 3-D Printed $E$ -Plane Waveguide Magic-T Using Air-Filled Coax-to-Waveguide Transitions

Guo

Gao

Wang

et al. 2019

IEEE Trans. Microwave Theory Techn.

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This paper reports on a new class of broadband and fully 3-D printed E-plane coax-to-waveguide transition and a monolithically 3-D printed waveguide magic-T based on the transition. The transition is constructed by a section of air-filled rectangular coaxial transmission line that is placed between two broadband coax-to-waveguide probe transitions. It is used to interconnect the magic-T's sum port and the waveguide T-junction. The incorporation of the transition reorients all the waveguide arms of the magic-T into the E plane. Some X-band prototypes of the proposed transition and magic-T are designed and implemented. Polymer-based additive manufacturing and copper electroplating techniques are employed to fabricate each prototype monolithically. The transition as well as the magic-T exhibits broadband and low-loss characteristics from 8.2 to 12.4 GHz with measured performance well matched with the simulations. Additionally, the power handling capability (PHC) including the peak PHC (PPHC) and the average PHC (APHC) of the magic-T is evaluated by simulations, showing that the proposed magic-T could handle 100 W of APHC.

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“…This article is part of a comprehensive study on 3‐D printed microwave circuits, where we are using the fact that complex shapes can be made easily. This has enabled a number of new novel ideas (including the one here), 14,15 as well as investigation into the frequency limits of 3‐D printing 16,17 . The design procedure of the filter is explained in Section 2, and fabrication details are provided in Section 3.…”

Section: Introductionmentioning

confidence: 99%

“…This has enabled a number of new novel ideas (including the one here), 14,15 as well as investigation into the frequency limits of 3-D printing. 16,17 The design procedure of the filter is explained in Section 2, and fabrication details are provided in Section 3. Section 4 provides measured and simulated results along with relevant discussion.…”

Section: Introductionmentioning

confidence: 99%

Two‐GHzhybrid coaxial bandpass filter fabricated by stereolithography3‐Dprinting

Salek

Wang

Lancaster

2020

Int J RF Microw Comput Aided Eng

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This brief presents a fourth‐order hybrid coaxial bandpass filter, which is fabricated using Stereolithography 3‐D printing. The filter is designed to operate at a center frequency of 2 GHz, with a bandwidth of 40 MHz, a Chebyshev response and two symmetrical transmission zeros at 1.96 GHz and 2.04 GHz to achieve a better frequency selectivity. Usually in coaxial cavity filter design, the main‐line couplings and cross couplings are realized using coupling irises or probes. However, in the filter presented here, the main‐line couplings between coaxial resonators and input/output coupling are realized using Printed Circuit Board (PCB) lines instead. This novel idea allows different topologies to be designed easily by altering the PCB layout. It also allows multiple cross couplings to be included in the PCB layout for different filter topologies. In addition, the quality factor of each of the coaxial resonators in the filter is increased by introducing base rounding in the resonator. The filter was tested, and the measurement result of the filter shows very good agreement with simulated result without tuning, which indicates the accuracy of the fabrication process.

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W-Band Waveguide Bandpass Filters Fabricated by Micro Laser Sintering

Cited by 55 publications

References 23 publications

Evaluation of Micro Laser Sintering Metal 3D-Printing Technology for the Development of Waveguide Passive Devices up to 325 GHz

Evaluation of Micro Laser Sintering Metal 3D-Printing Technology for the Development of Waveguide Passive Devices up to 325 GHz

A 3-D Printed $E$ -Plane Waveguide Magic-T Using Air-Filled Coax-to-Waveguide Transitions

Two‐GHzhybrid coaxial bandpass filter fabricated by stereolithography3‐Dprinting

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