Miniaturized Lumped-Element LTCC Filter With Spurious Spikes Suppressed Vertically-Interdigital-Capacitors

Zhou, Bo; Sheng, Weixing; Zheng, Yifeng

doi:10.1109/lmwc.2014.2342935

Cited by 13 publications

(13 citation statements)

References 5 publications

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“…With the mathematical induction, it can be proved that the proposed technique can be used to design multilayered filters composed of reactance components in series, as the filter in [4,7,8]. With additional circuit transformation or steps, it can be used for more filters, as the filters in [9][10][11][12]. Figure 2 shows a flowchart of proposed technique.…”

Section: Design Techniquementioning

confidence: 99%

Fast Design Technique for Lumped-Element Multilayered Bandpass Filters

Cao¹,

Cheng²

2016

PIER Letters

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Abstract-A fast design technique for lumped-element multilayered bandpass filters is proposed. With this technique, the difference between multilayered component values and theoretical component values can be quickly estimated and tuned. The design procedure for filters can be obviously simplified, and the efficiency can be improved. This technique is discussed in detail, and mathematic explanation is given. An example is used to show the entire design procedure. The measurement result agrees well with the desired result, which shows the effectiveness of proposed technique.

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Section: Design Techniquementioning

confidence: 99%

Fast Design Technique for Lumped-Element Multilayered Bandpass Filters

Cao¹,

Cheng²

2016

PIER Letters

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“…In [2], alternate fingers of interdigital capacitors are shorted to eliminate the spurious spikes. In [3], by connecting the open ends of interval fingers of VIC, the spurious spikes are suppressed. In [4], a vertical and horizontal interdigitated capacitor is proposed.…”

Section: Introductionmentioning

confidence: 99%

“…A reasonable space between adjacent capacitors is required for less coupling and transmission lines are used for connections. This design technique is widely used [3][4][5][6] and it may be called the conventional technique. Filters designed with this technique have two disadvantages.…”

mentioning

confidence: 99%

“…For filters composed of conventional layouts, these undesired resonances may have great influences on the overall response. In this example, the size of the SPC layout and the conventional layout are about 3.4 × 3.7 × 0.43 mm 3 and 4.1 × 4.2 × 0.53 mm 3 , respectively. Since no transmission line is used, the SPC layout is very compact.…”

mentioning

confidence: 99%

“…Filter design and experimental verification: The proposed SPC can be used in the design of filters using capacitively coupled resonators. Meanwhile, by removing a series capacitor, this layout can be used for more filters like [3,6]. In this Letter, we take the filter shown in Fig.…”

mentioning

confidence: 99%

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Stacked plate capacitor design technique for filters constructed on multilayer substrates

Cao

Cheng

2016

Electron. lett.

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A stacked plate-capacitor design technique for filters constructed on multilayer substrates is proposed. With this technique, the parasitic effects between capacitors and grounds as well as the parasitic effects between different capacitors can be significantly reduced. The proposed layout can be used in multlayered filters design as a block and the design procedure for filters can be simplified. The proposed layout is analysed in detail. A multilayered filter is designed to demonstrate the design procedure. Both simulation results and measurement results show the effectiveness of the proposed technique.

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Wideband and miniaturized lumped‐element low temperature co‐fired ceramic filter Using size reduced resonators for very high frequency applications

Zhou

et al. 2022

Int J RF Mic Comp-Aid Eng

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A wideband and miniaturized bandpass filter (BPF) is proposed using size reduced resonator (SRR) for the very high frequency band applications. The proposed SRR places vertically interdigital-capacitor inside spiral inductor, thus two L-C elements only take up one inductor's area. Therefore, significant size reduction and integration increment are both achieved without increasing the number of substrate layers. The BPF is built on a 10-layer thickness low temperature cofired ceramic substrate and has the smallest reported size of only 0.00 7 λ g Â 0.004 λ g Â 0.0005 λ g . Moreover, the BPF also achieved a wide fractional bandwidth of 97.2%, a low in-band insertion loss of only 0.7 dB, a great selectivity BW 20 dB /BW 3 dB of 1.23 and a wide stopband up to 2.2f 0 with 20 dB suppression. Furthermore, comparisons and discussions are also implemented.

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Miniaturized Lumped-Element LTCC Filter With Spurious Spikes Suppressed Vertically-Interdigital-Capacitors

Cited by 13 publications

References 5 publications

Fast Design Technique for Lumped-Element Multilayered Bandpass Filters

Fast Design Technique for Lumped-Element Multilayered Bandpass Filters

Stacked plate capacitor design technique for filters constructed on multilayer substrates

Wideband and miniaturized lumped‐element low temperature co‐fired ceramic filter Using size reduced resonators for very high frequency applications

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