Microstrip open-loop ring bandpass filter using open stubs for harmonic suppression

Wen Hua Tu; Huifeng Li; Krzysztof A. Michalski; Kai Chang

doi:10.1109/MWSYM.2006.249543

Microstrip open-loop ring bandpass filter using open stubs for harmonic suppression

Wen Hua Tu, Huifeng Li, Krzysztof A. Michalski, Kai Chang

Department of Electrical Engineering

Research output: Contribution to journal › Conference article › peer-review

19 Scopus citations

Abstract

Improved harmonic suppression is achieved by adding small shunt open stubs to a conventional open-loop bandpass filter. A design curve for the shunt open stub is derived using the ABCD matrix calculation. The insertion loss of the four-pole filter is 3 dB at 1.8385 GHz, and the return loss is better than 10 dB within 1.7935-1.8835 GHZ. The suppression of the modified filter is better than 30 dB below 1.7 GHz and between 2-6 GHz, while the conventional filter shows a spurious passband at 3.7 GHz.

Original language	English
Article number	4014903
Pages (from-to)	357-360
Number of pages	4
Journal	IEEE MTT-S International Microwave Symposium Digest
DOIs	https://doi.org/10.1109/MWSYM.2006.249543
State	Published - 2006
Event	2006 IEEE MTT-S International Microwave Symposium Digest - San Francisco, CA, United States Duration: 11 Jun 2006 → 16 Jun 2006

Keywords

Harmonic suppression
Open-loop bandpass filter
Ring filter

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10.1109/MWSYM.2006.249543

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title = "Microstrip open-loop ring bandpass filter using open stubs for harmonic suppression",

abstract = "Improved harmonic suppression is achieved by adding small shunt open stubs to a conventional open-loop bandpass filter. A design curve for the shunt open stub is derived using the ABCD matrix calculation. The insertion loss of the four-pole filter is 3 dB at 1.8385 GHz, and the return loss is better than 10 dB within 1.7935-1.8835 GHZ. The suppression of the modified filter is better than 30 dB below 1.7 GHz and between 2-6 GHz, while the conventional filter shows a spurious passband at 3.7 GHz.",

keywords = "Harmonic suppression, Open-loop bandpass filter, Ring filter",

author = "Tu, {Wen Hua} and Huifeng Li and Michalski, {Krzysztof A.} and Kai Chang",

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T1 - Microstrip open-loop ring bandpass filter using open stubs for harmonic suppression

AU - Tu, Wen Hua

AU - Li, Huifeng

AU - Michalski, Krzysztof A.

AU - Chang, Kai

PY - 2006

Y1 - 2006

N2 - Improved harmonic suppression is achieved by adding small shunt open stubs to a conventional open-loop bandpass filter. A design curve for the shunt open stub is derived using the ABCD matrix calculation. The insertion loss of the four-pole filter is 3 dB at 1.8385 GHz, and the return loss is better than 10 dB within 1.7935-1.8835 GHZ. The suppression of the modified filter is better than 30 dB below 1.7 GHz and between 2-6 GHz, while the conventional filter shows a spurious passband at 3.7 GHz.

AB - Improved harmonic suppression is achieved by adding small shunt open stubs to a conventional open-loop bandpass filter. A design curve for the shunt open stub is derived using the ABCD matrix calculation. The insertion loss of the four-pole filter is 3 dB at 1.8385 GHz, and the return loss is better than 10 dB within 1.7935-1.8835 GHZ. The suppression of the modified filter is better than 30 dB below 1.7 GHz and between 2-6 GHz, while the conventional filter shows a spurious passband at 3.7 GHz.

KW - Harmonic suppression

KW - Open-loop bandpass filter

KW - Ring filter

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U2 - 10.1109/MWSYM.2006.249543

DO - 10.1109/MWSYM.2006.249543

M3 - 會議論文

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EP - 360

JO - IEEE MTT-S International Microwave Symposium Digest

JF - IEEE MTT-S International Microwave Symposium Digest

M1 - 4014903

T2 - 2006 IEEE MTT-S International Microwave Symposium Digest

Y2 - 11 June 2006 through 16 June 2006

ER -

Microstrip open-loop ring bandpass filter using open stubs for harmonic suppression

Abstract

Keywords

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