350-GHz Bandpass Filters Using Superconducting Coplanar Waveguide

Ding, Jiang‐Qiao; Hu, Jie; Shi, Sheng‐Cai

doi:10.1109/tthz.2021.3071019

Cited by 11 publications

(8 citation statements)

References 38 publications

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“…The electronic approach is usually adopting transmission lines like the microstrip line, coplanar waveguide (CPW) and rectangular waveguide to form multiplexing circuits. However, superconductors, membrane circuits and micromachining are required to realize the low‐loss microstrip lines 19,22 and CPWs 23–25 . The disadvantages of the complex process, low Q ‐factor, dielectric loss, and radiation loss also exist.…”

Section: Introductionmentioning

confidence: 99%

Terahertz waveguide multiplexers: A review

Tan

Zhang

Lei

et al. 2023

Micro & Optical Tech Letters

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Section: Introductionmentioning

confidence: 99%

Terahertz waveguide multiplexers: A review

Tan

Zhang

Lei

et al. 2023

Micro & Optical Tech Letters

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“…In recent years, superconducting coplanar waveguide (CPW) resonators have been widely used in weak signal detection because of their fast operation, long coherence time, simple structure, and easy integration [1][2][3][4][5]. The high-quality on-chip CPW resonators have been found prominent applications in superconducting electronic circuit devices, such as filters, resonators and sensors et al With the development of superconducting quantum information technology, a simple layer and balanced structure of the CPW made these CPW resonators widely used to filter or enhance qubit circuits coupling and measure the cosmic background radiation [6,7].…”

Section: Introductionmentioning

confidence: 99%

Temperature and power characteristics of quarter-wavelength superconducting coplanar waveguide resonator

Jing

Hua

et al. 2022

SN Appl. Sci.

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A quarter wavelength superconducting aluminum film coplanar waveguide resonator with a high-quality factor was designed and fabricated. Furthermore, its resonant frequency and quality as a function of temperatures and exciting powers were investigated. The experimental results showed that the resonance frequency decreases about 1% with the increase of temperature from 50 mk to 1 K, and the load quality factor of the resonator also decreases. The resonant frequency decreases with power from − 120 to − 70 dBm. The quality factor increases with increased excitation power due to the loss decreases and nonlinearity. The results are consistent with the theoretical analysis of the surface impedance model.

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“…At present, many kinds of planar filters operating in millimeter wave and terahertz were proposed. [7][8][9] A W-band hairpin band-pass filter is proposed based on the GaAs substrate, 7 with an insertion loss (IL) of 5 dB and return loss of less than 15 dB at 95.5 GHz. In some works, the coplanar waveguide (CPW) with a higher quality factor and via-holes free structure is used.…”

Section: Introductionmentioning

confidence: 99%

“…As a result, it is worth attempting to design a planar filter on the SiC substrate without via‐holes. At present, many kinds of planar filters operating in millimeter wave and terahertz were proposed 7–9 . A W‐band hairpin band‐pass filter is proposed based on the GaAs substrate, 7 with an insertion loss (IL) of 5 dB and return loss of less than 15 dB at 95.5 GHz.…”

Section: Introductionmentioning

confidence: 99%

Terahertz monolithic integrated coplanar band‐pass filter based on slotline mode

Liu

Yang

et al. 2022

Micro & Optical Tech Letters

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In this letter, a terahertz monolithic integrated planar band-pass filter based on coplanar waveguide (CPW) resonators has been proposed. By adopting the feeding line in form of a slotline, the need for air-bridges in traditional CPW filters is eliminated, achieving good integrability and reducing fabrication difficulty. To further improve the filtering performance, the defected ground structure is used in the design, introducing a finite transmission zero at the lower sideband. The filter is manufactured on the semi-insulation silicon carbide (SiC) substrate, to fit the existing advanced GaN-on-SiC monolithic integration system. Measurement reveals the fractional band-width of 5.7% at the center frequency of 279 GHz, with an insertion loss of 5.1 dB. With a volume of 500 × 400 × 50 μm (0.45 × 0.36 × 0.045 λ 0 ), the proposed filter improves the performance of the planar filter operating at the terahertz band effectively.

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350-GHz Bandpass Filters Using Superconducting Coplanar Waveguide

Cited by 11 publications

References 38 publications

Terahertz waveguide multiplexers: A review

Terahertz waveguide multiplexers: A review

Temperature and power characteristics of quarter-wavelength superconducting coplanar waveguide resonator

Terahertz monolithic integrated coplanar band‐pass filter based on slotline mode

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