Low-temperature cofired ceramic planar helical filter with single-sided transmission zeros

Yafen Wu; Wenquan Che; Kuo Sheng Chin; Kuang Ching Chang; Wenjie Feng

doi:10.1049/el.2014.2530

Low-temperature cofired ceramic planar helical filter with single-sided transmission zeros

Yafen Wu^*, Wenquan Che, Kuo Sheng Chin, Kuang Ching Chang, Wenjie Feng

^*Corresponding author for this work

Department of Electronic Engineering

Research output: Contribution to journal › Journal Article › peer-review

1 Scopus citations

Abstract

A planar low-temperature cofired ceramic helical bandpass filter with a compact size is presented. The proposed filter is constructed from short-circuited λ_g/4 helical resonators, while the size is reduced significantly by winding resonators vertically. Two single-sided transmission zeros can be created by the proposed mixed electric and magnetic coupling structure. A prototype with size of 6.2 × 4 mm²(0.049 × 0.032λ_g²) has been fabricated for demonstration. The measured fractional bandwidth is 5.9% at 0.845 GHz, and two transmission zeros are observed at 0.90 and 1.07 GHz.

Original language	English
Pages (from-to)	1363-1365
Number of pages	3
Journal	Electronics Letters
Volume	50
Issue number	19
DOIs	https://doi.org/10.1049/el.2014.2530
State	Published - 11 09 2014

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© The Institution of Engineering and Technology 2014.

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title = "Low-temperature cofired ceramic planar helical filter with single-sided transmission zeros",

abstract = "A planar low-temperature cofired ceramic helical bandpass filter with a compact size is presented. The proposed filter is constructed from short-circuited λg/4 helical resonators, while the size is reduced significantly by winding resonators vertically. Two single-sided transmission zeros can be created by the proposed mixed electric and magnetic coupling structure. A prototype with size of 6.2 × 4 mm2(0.049 × 0.032λg2) has been fabricated for demonstration. The measured fractional bandwidth is 5.9% at 0.845 GHz, and two transmission zeros are observed at 0.90 and 1.07 GHz.",

author = "Yafen Wu and Wenquan Che and Chin, {Kuo Sheng} and Chang, {Kuang Ching} and Wenjie Feng",

note = "Publisher Copyright: {\textcopyright} The Institution of Engineering and Technology 2014.",

year = "2014",

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doi = "10.1049/el.2014.2530",

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AU - Wu, Yafen

AU - Che, Wenquan

AU - Chin, Kuo Sheng

AU - Chang, Kuang Ching

AU - Feng, Wenjie

PY - 2014/9/11

Y1 - 2014/9/11

N2 - A planar low-temperature cofired ceramic helical bandpass filter with a compact size is presented. The proposed filter is constructed from short-circuited λg/4 helical resonators, while the size is reduced significantly by winding resonators vertically. Two single-sided transmission zeros can be created by the proposed mixed electric and magnetic coupling structure. A prototype with size of 6.2 × 4 mm2(0.049 × 0.032λg2) has been fabricated for demonstration. The measured fractional bandwidth is 5.9% at 0.845 GHz, and two transmission zeros are observed at 0.90 and 1.07 GHz.

AB - A planar low-temperature cofired ceramic helical bandpass filter with a compact size is presented. The proposed filter is constructed from short-circuited λg/4 helical resonators, while the size is reduced significantly by winding resonators vertically. Two single-sided transmission zeros can be created by the proposed mixed electric and magnetic coupling structure. A prototype with size of 6.2 × 4 mm2(0.049 × 0.032λg2) has been fabricated for demonstration. The measured fractional bandwidth is 5.9% at 0.845 GHz, and two transmission zeros are observed at 0.90 and 1.07 GHz.

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DO - 10.1049/el.2014.2530

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VL - 50

SP - 1363

EP - 1365

JO - Electronics Letters

JF - Electronics Letters

IS - 19

ER -

Low-temperature cofired ceramic planar helical filter with single-sided transmission zeros

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