Low loss microstrip transmission-lines using cyclic olefin copolymer COC-substrate for sub-THz and THz applications

Chahadih, Abdallah; Chudzik, M.; Arnedo, I.; Ghaddar, Abbas; Arregui, I.; Teberio, Fernando; Lujambio, A.; Laso, M.A.G.; Lopetegi, T.; Akalin, T.

doi:10.1109/irmmw-thz.2013.6665702

Cited by 5 publications

(2 citation statements)

References 3 publications

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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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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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“…In Reference , a low loss microstrip line is designed on 10‐μm thick cyclic olefin copolymer dielectric layer for sub‐THz and THz applications. Slow‐wave microstrip line using a periodic structure in the ground plane is presented in Reference .…”

Section: Introductionmentioning

confidence: 99%

Recessed ground microstrip line at 60 GHz and its application of band‐pass filter

Jaiswal

Abegaonkar

Koul

2019

Int J RF Microw Comput Aided Eng

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The effect of finite-size recessed ground on characteristic features of a microstrip transmission line is investigated and verified experimentally on alumina substrate of height 0.127 mm with ε r = 9.8 at 60 GHz. A measured characteristic impedance of 238 Ω, effective dielectric constant of 3.09, and attenuation constant of 3.4 Np/m is achieved by using a recessed ground of dimensions (width × depth) 4.5 mm × 0.95 mm, below a 50-Ω (on conventional ground plane) microstrip line.The effect of recessed ground on lumped equivalent circuit elements of microstrip line discontinuities including series-gap, open-end, and step discontinuities is also studied. To show the usefulness of recessed ground microstrip line, a prototype of fifth-order Chebyshev-type recessed ground end-coupled band-pass filter is designed and fabricated at 60 GHz. The filter exhibits measured insertion loss lower than 2.2 dB and return loss better than 13 dB over 3-dB passband of 6% centered at 60 GHz. The measured results show good consistency with simulated results and confirm the usefulness of recessed ground plane microstrip line. K E Y W O R D S

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Low-loss Substrate Material for Millimeter-wave and THz Applications (Invited)

Cai

Jiang

Wang

2019

2019 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT)

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Low loss microstrip transmission-lines using cyclic olefin copolymer COC-substrate for sub-THz and THz applications

Cited by 5 publications

References 3 publications

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

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

Recessed ground microstrip line at 60 GHz and its application of band‐pass filter

Low-loss Substrate Material for Millimeter-wave and THz Applications (Invited)

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