Presentation | 2013-07-18 Theoretical Design of UWB Bandpass Filters Using Multistage Three-Line-Units J. ODA, C.-P CHEN, K. KAMATA, T. KATO, T. ANADA, Z. Ma, |
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Abstract(in Japanese) | (See Japanese page) |
Abstract(in English) | An improved compound three-line unit, which can also be treated as the one constructed by inserting a 5/4-wavelength stepped-impedance resonator (SIR) into between parallel-coupled two lines, is proposed to implement wideband bandpass filters with high skirt-selectivity and out-of-band characteristics. A corresponding design/synthesis scheme is proposed after the mechanism of the proposed structures is investigated. Two pairs of transmission zeros are found in lower and upper stopbands due to the inserted 5/4-wavelength SIR, whereas a pair of spurious passbands are found near the transmission zeros farther from the passband. To suppress it, two open-circuited stubs, whose transmission zeros are the same frequencies of the spurious passbands, are used to replace the short-circuited ones loaded at input- and output- ports. Finally, a wideband filter with a bandwidth of 3-5GHz (FBW:50%) is designed to validate the effectiveness of the proposed structure and corresponding design scheme. |
Keyword(in Japanese) | (See Japanese page) |
Keyword(in English) | Ultra-wideband (UWB) / Transmission zeros / Steep skirt selectivity / Out-of-band / Bandpass filter (BPF) |
Paper # | MW2013-51,OPE2013-20,EST2013-15,MWP2013-10 |
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Conference Information | |
Committee | EST |
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Conference Date | 2013/7/11(1days) |
Place (in Japanese) | (See Japanese page) |
Place (in English) | |
Topics (in Japanese) | (See Japanese page) |
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Paper Information | |
Registration To | Electronic Simulation Technology (EST) |
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Language | ENG |
Title (in Japanese) | (See Japanese page) |
Sub Title (in Japanese) | (See Japanese page) |
Title (in English) | Theoretical Design of UWB Bandpass Filters Using Multistage Three-Line-Units |
Sub Title (in English) | |
Keyword(1) | Ultra-wideband (UWB) |
Keyword(2) | Transmission zeros |
Keyword(3) | Steep skirt selectivity |
Keyword(4) | Out-of-band |
Keyword(5) | Bandpass filter (BPF) |
1st Author's Name | J. ODA |
1st Author's Affiliation | Department of Electrical Electronics and Information Engineering, Kanagawa University() |
2nd Author's Name | C.-P CHEN |
2nd Author's Affiliation | Department of Electrical Electronics and Information Engineering, Kanagawa University |
3rd Author's Name | K. KAMATA |
3rd Author's Affiliation | Department of Electrical Electronics and Information Engineering, Kanagawa University |
4th Author's Name | T. KATO |
4th Author's Affiliation | Department of Electrical Electronics and Information Engineering, Kanagawa University |
5th Author's Name | T. ANADA |
5th Author's Affiliation | Department of Electrical Electronics and Information Engineering, Kanagawa University |
6th Author's Name | Z. Ma |
6th Author's Affiliation | Department of Electrical and Electronics Systems, Saitama University |
Date | 2013-07-18 |
Paper # | MW2013-51,OPE2013-20,EST2013-15,MWP2013-10 |
Volume (vol) | vol.113 |
Number (no) | 143 |
Page | pp.pp.- |
#Pages | 6 |
Date of Issue |