Analysis of Microwave Filter based on LC Chips in Microstrip Circuitry using K-Inverter Approach

Intarawiset, Nattapong; Akatimagool, Somsak; Narongkul, Sarun

doi:10.1109/icteched6.2019.8790917

Cited by 3 publications

(2 citation statements)

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“…Group delay compensation [9] and the use of coupled lines [10][11][12] have been proposed as wideband BPF design methods. Filters with open stubs have also been proposed by based on the K-inverter structure [13]. However, the coupled lines have wideband limitation due to line spacing, and the methods proposed in [9][10][11][12][13] require optimization processes.…”

Section: Introductionmentioning

confidence: 99%

“…Filters with open stubs have also been proposed by based on the K-inverter structure [13]. However, the coupled lines have wideband limitation due to line spacing, and the methods proposed in [9][10][11][12][13] require optimization processes. Filter design methods using lumped elements [14][15] have been proposed to improve the design accuracy.…”

Section: Introductionmentioning

confidence: 99%

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An Accurate Design Method of Wideband BPF Considering Frequency Dependence of Inverters

Jang

Ahn

2023

JICCE

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This paper presents a design method for a wideband bandpass filter (BPF) which compensates for frequency dependency based on the image admittance and image phase. In the proposed method, new compensation methods for the admittance and phase are integrated with the conventional method. The proposed method improves the frequency shift and reduces the unwanted bandwidth when designing more than 20% of the Fractional Bandwidth (FBW), whereas the conventional method exhibits frequency degradation at only 10% FBW. The proposed design theory was verified by applying it to both lumped elements and distributed lines through circuit simulation and measurements without an optimization process. The measurement results demonstrate improvements in the frequency shift and target bandwidth. In the future, an accurate design method based on frequency dependence can be implemented for the next-generation broadband communication system applications.

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