New formulas for synthesizing microstrip bandpass filters with relatively wide bandwidths

被引：36

作者：

Chin, KS ^{[1
]}

Lin, LY ^{[1
]}

Kuo, JT ^{[1
]}

机构：

[1] Natl Chiao Tung Univ, Dept Commun Engn, Hsinchu 300, Taiwan

来源：

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2004年 / 14卷 / 05期

关键词：

parallel-coupled filter; wide bandwidth;

D O I：

10.1109/LMWC.2004.827865

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

New formulas are proposed for designing wideband parallel-coupled microstrip bandpass filters with improved prediction of bandwidth. When a fractional bandwidth Delta is required, a correction theta = (pi / 2) (1 +/- Delta / 2) is incorporated into the formulation for determining the dimensions of each coupled stage. Two filters with Delta = 50% are designed and fabricated to show the improvement. The measurement shows a very good agreement with the simulation.

引用

页码：231 / 233

页数：3

共 10 条

[1] Wide-band lumped-element quadrature 3-dB couplers in microstrip [J].

Andrews, DP ;

Aitchison, CS .

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2000, 48 (12) :2424-2431

[2]

[Anonymous], 1997, IE3D SIM

[3] A MODIFIED PARALLEL-COUPLED FILTER STRUCTURE THAT IMPROVES THE UPPER STOPBAND REJECTION AND RESPONSE SYMMETRY [J].

CHANG, CY ;

ITOH, T .

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 1991, 39 (02) :310-314

[4] Maximally flat quarter-wavelength-coupled transmission-line filters using Q distribution [J].

Drozd, JM ;

Joines, WT .

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 1997, 45 (12) :2100-2113

[5]

KUO JT, 2002, P I ELECTR ENG, V149, P243, DOI DOI 10.1049/IP-MAP:20020572

[6] THEORY OF DIRECT-COUPLED-CAVITY FILTERS [J].

LEVY, R .

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 1967, MT15 (06) :340-&

[7]

Matthaei G. L., 1980, Microwave Filters, Impedance-Matching Networks, and Coupling Structures

[8]

Pozar M. D., 1998, MICROWAVE ENG

[9]

Yoon YC, 2002, 2002 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS, VOLS 1-5, CONFERENCE PROCEEDINGS, P812, DOI 10.1109/ICC.2002.996968

[10]

Zhu L, 2002, IEE P-MICROW ANTEN P, V149, P71, DOI [10.1049/ip-map:20020145, 10.1049/ip-map:20010145]

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