A Compact Broadband Transparent Waveguide Window Based on Low-Loss Cyclic Olefin Copolymer

Chen, Haidong; Zheng, Shimin; Che, Wenquan; Zhewen, Luo; Xue, Quan

doi:10.1109/lmwc.2020.2974681

Cited by 7 publications

(6 citation statements)

References 13 publications

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“…Hessler et al [63] incorporated a COC substrate into an optofluidics device for biosensing. Chen et al [64] exploited COC substrates as waveguides operating from 26 to 40 GHz, and Zhong et al [65] utilized a thin-walled COC tube for a terahertz (THz) waveguide application. These applications are possible because of COCs' high light transmission over a wide range of wavelengths, high refractive index, low birefringence, and large Abbe number.…”

Section: Optical Propertiesmentioning

confidence: 99%

“…The COC is also a suitable candidate in optical-related devices and applications. Keeping in view the low-loss nature of the COC, Chen et al [64] proposed a design where a multilayer waveguide window was realized without using brazing or soldering processes. A waveguide window is a key component in a wave-guide system that safeguards the whole system against external hazards like humidity, dust, etc.…”

Section: Applications Fabrication Technique Referencesmentioning

confidence: 99%

“…A waveguide window is a key component in a wave-guide system that safeguards the whole system against external hazards like humidity, dust, etc. The design by Chen et al [64] introduced two waveguide windows that were comprised of two components: i) an internal bipyramids-type machined COC material for broadband application, and ii) two external fixtures in order to hold the COC and attach it to the conventional rectangular waveguide. The researchers reported a superior to 20 dB reflection and a maximum low loss of 0.5 dB at Ka-band.…”

Section: Applications Fabrication Technique Referencesmentioning

confidence: 99%

See 2 more Smart Citations

A Review of Cyclic Olefin Copolymer Applications in Microfluidics and Microdevices

Agha

Waheed

Alamoodi

et al. 2022

Macro Materials & Eng

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Cyclic olefin copolymers (COC) are amorphous, transparent thermoplastics composed of cyclic olefin monomers (norbornene) and linear olefins (ethene). They are increasingly utilized as fabrication materials for microsystems and microfluidic devices, owing to their promising features of low water absorption, high electrical insulation, long-term stability of surface treatments, and resistance to a broad variety of acids and solvents. Many manufacturing processes for COC-based devices have been developed in recent decades. These methodologies are categorized as replication methods or fast prototyping as common in fabrication of thermoplastic microfluidic devices. This review gives a full discussion of the features of COCs, the various production processes, and the numerous selected applications in microfluidic platforms. The review also explores COC's composition and fundamental features, as well as fabrication processes and applications in a variety of fields, investigates the material's potential advantages and uses, and attempts to create a comprehensive list of COC's possible benefits. Due to their unique features and simplicity of fabrication, COCs are projected to advance the future of microfluidics, microsystems, and optofluidics.

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Section: Optical Propertiesmentioning

confidence: 99%

Section: Applications Fabrication Technique Referencesmentioning

confidence: 99%

Section: Applications Fabrication Technique Referencesmentioning

confidence: 99%

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A Review of Cyclic Olefin Copolymer Applications in Microfluidics and Microdevices

Agha

Waheed

Alamoodi

et al. 2022

Macro Materials & Eng

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“…A harmonic mixer based on COC is presented at 220 GHz, which has lower temperature noise of 1000 K than that of 1200 K on RT/duroid 5880 substrate 17 . Moreover, the COC is used for the application of ultracompact dielectric waveguide window, with 20 dB return loss and 0.5 dB insertion loss in the related frequency range of 49% 18 . Thus, we think the COC has obvious advantages over many other thermoplastics for various applications, for example, EMI shielding in military applications which require high mechanical strength, long life and good processability 19 …”

Section: Manufacture Of Coc‐based CCLmentioning

confidence: 99%

Cyclic olefin copolymer‐based copper clad laminate and the application for low loss broadband baluns

Zheng

Chen

et al. 2021

Int J RF Mic Comp-Aid Eng

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In this article, a novel copper clad laminate based on cyclic olefin copolymer (COC) is proposed and manufactured by using lamination process. The loss characteristic of manufactured laminate is investigated by comparing the measured results of two microstrips on proposed COC‐based laminate and traditional Rogers RT/duroid 5880, respectively. Moreover, the SIW/HMSIW baluns operated at X‐band are designed on the proposed laminate, and the measured results verify the inherent out‐of‐phase performance and good amplitude characteristics in broadband frequency range. This work shows a novel type of high‐frequency circuit boards on COC material, which is significantly to be one of the advanced candidates for microwave/millimeter wave circuit applications.

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“…It presents a low relative permittivity and a low loss factor as substrates for high‐frequency circuits 2 . However, there are very few applications based on this kind of COC, such as antenna, 1 mixer, 2 low‐loss transmission lines, 3–5 THz fibers, 6 filters, 7 and waveguide, 8 since the processing technologies of circuits patterns on COC are not easy. The patterns can be formed on the COC surface by optical lithography/e‐beam lithography, followed by the metal film deposition and standard lift‐off technique 1,7 .…”

Section: Introductionmentioning

confidence: 99%

Implementation of cyclic olefin copolymer‐based microwave circuit and the performance comparison

Chen

et al. 2022

Micro & Optical Tech Letters

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The fabrication process of an advanced transparent cyclic olefin copolymer (COC)-based laminate is introduced, along with the laser cutting technology for circuit pattern. Then, a three-way Gysel divider with an equal power-dividing ratio is reviewed, designed and measured, based on the proposed COCbased laminate. The measured results are compared to those from a similar three-way Gysel divider based on traditional RT/duroid 5880 laminate, from which we can see that COC-based laminate has the advantage of lower loss, with other advantages such as low cost, easy realization, high-precision, and even the transparency. This laminate can be an excellent candidate for a substrate at microwave or millimeterwave circuits.

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A Compact Broadband Transparent Waveguide Window Based on Low-Loss Cyclic Olefin Copolymer

Cited by 7 publications

References 13 publications

A Review of Cyclic Olefin Copolymer Applications in Microfluidics and Microdevices

A Review of Cyclic Olefin Copolymer Applications in Microfluidics and Microdevices

Cyclic olefin copolymer‐based copper clad laminate and the application for low loss broadband baluns

Implementation of cyclic olefin copolymer‐based microwave circuit and the performance comparison

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