Parallel coupled-line bandpass filter with branch-line shape for G-band frequency

Hwang, C.-J.; Lok, Lai Bun; Thayne, I.G.; Elgaid, K.

doi:10.1049/el.2009.0716

Cited by 6 publications

(4 citation statements)

References 7 publications

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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%

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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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Section: Introductionmentioning

confidence: 99%

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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“…Planar filters have already been designed in D-bands (110 GHz-180 GHz) and at beyond. Considering the mmwave domain as well as the constraints on the insertion loss of the filter, most of them were implemented in III-V planar technologies [7]- [10]. However, given the improved performance of the integrated active components and their low production cost, silicon technologies have become attractive and essential for the realization of system on chips.…”

Section: Introductionmentioning

confidence: 99%

Substrate Integrated Waveguide Bandpass Filters implemented on Silicon Interposer for Terahertz Applications

Prigent¹,

Franc²,

Wietstruck³

et al. 2020

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

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This paper deals with the design of Substrate Integrated Waveguide (SIW) bandpass filter for D-band (140 GHz) and terahertz (280 GHz and 420 GHz) applications. The filters are implemented in High Resistivity (HR) Silicon interposer technology provided by IHP foundry using Through Silicon Vias (TSV). Filters with 3 dB relative bandwidth of 5% and 10% are designed. A comparison of the filters performance is made for the different frequency range. It evidences the interest of SIW technology in sub-millimeter wave domain towards the resonator quality factor increase and, therefore, insertion loss reduction for filters.

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“…However, the launching of the so-called coupled slotline mode (CSM) at any asymmetric discontinuity yields spurious effects that degrade the signal integrity in CPW circuits [5][6][7][8][9]. There exist many alternatives to suppress the excitation of the CSM, for example the use of top and bottom shields [10,11], but the air-bridge technique is the most common procedure, despite its inconveniences [5,7,[12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Effects of the bottom ground plate on coplanar waveguide structures

Amrani¹,

Rodríguez-Berral²,

Mesa³

2013

IET Microwaves, Antennas & Propagation

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In this article, the authors study the significant practical effects caused by the presence of a conductor plate beneath a coplanar waveguide (CPW) structure. Specifically the authors pay attention to the effects on the dispersion characteristics of the bound modes and on the signal integrity. This study allows one to discuss the reported proposal on the use of this additional conductor plate as an inexpensive alternative to air‐bridges in order to alleviate the possible spurious effects produced by the potential existence of asymmetries in CPW‐based circuits.

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Parallel coupled-line bandpass filter with branch-line shape for G-band frequency

Cited by 6 publications

References 7 publications

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

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

Substrate Integrated Waveguide Bandpass Filters implemented on Silicon Interposer for Terahertz Applications

Effects of the bottom ground plate on coplanar waveguide structures

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