Evanescent mode compact waveguide filter

Zhang, Xianrong; Wang, Hongtao; Lei, Hong; Liu, Rongjun

doi:10.1109/icmmt.2008.4540375

Cited by 2 publications

(1 citation statement)

References 10 publications

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“…For this reason, many scholars introduce the concept of rough set in generation algorithm of decision tree so as to improve the classification efficiency [2][3][4][5][6][7][8][9]. Rough set theory is a kind of analysis data mathematical theory and proposed by Poland mathematician Z. Pawlak in 1982 [10].…”

Section: Introductionmentioning

confidence: 99%

Construction of Decision Tree Based on Rough Sets Theory

Lei

2012

AMR

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In the process of constructing decision trees, the selecting criteria of classification attributes will directly affect the classification results. Here we presented the classification contribution function (CCF), a new concept based on rough sets theory, which is regarded as the criteria for choosing attributes in the core of attributes. The basic idea of CCF is using of discernibility matrix to determine attribute core (if there is no core, using its reduction). Then through the classification contribution function to determine core classification contribution value and employ the big value as node. Next employing the selected attribute ways to divide decision-making system and each value attribute can produce a subset. The experiments show that, being compared with the entropy based C4.5 and weighted mean roughness, our method can get simpler decision tree and improve the efficiency of classification.

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Section: Introductionmentioning

confidence: 99%

Construction of Decision Tree Based on Rough Sets Theory

Lei

2012

AMR

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A Compact, Wideband Waveguide Bandpass Filter Using Complementary Loaded Split Ring Resonators

Bage¹,

Das²

2016

PIER C

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This paper presents a Complementary Loaded Split Ring Resonator (CLSRR) based compact, wideband, waveguide bandpass filter. Three identical CLSRRs were fabricated and placed on the transverse plane of a standard WR-90 waveguide at a quarter wavelength distance to form the filter. The proposed filter was initially simulated using Ansoft HFSS (version 14) and then fabricated and measured. The measured result shows a fractional bandwidth of 18.80% at 10.05 GHz. Total length of the filter is only 20.33 mm which is compact enough. Detailed design procedure has been presented along with the equivalent circuit of the filter. A table has been provided to compare the performance of the proposed filter with those already available in the literatures. The table shows that the proposed filter is compact and has higher bandwidth, lower insertion loss and higher return loss.

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Evanescent mode compact waveguide filter

Cited by 2 publications

References 10 publications

Construction of Decision Tree Based on Rough Sets Theory

Construction of Decision Tree Based on Rough Sets Theory

A Compact, Wideband Waveguide Bandpass Filter Using Complementary Loaded Split Ring Resonators

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