A new compact LTCC bandpass filter using negative coupling

Wei Shin Tung; Yi Chyun Chiang; Jui Ching Cheng

doi:10.1109/LMWC.2005.856688

A new compact LTCC bandpass filter using negative coupling

Wei Shin Tung
, Yi Chyun Chiang
, Jui Ching Cheng

電子工程系

研究成果: 期刊貢獻 › 文章 › 同行評審

31 引文斯高帕斯（Scopus）

摘要

This letter presents the design and realization of a new compact bandpass filter (BPF) fabricated on multilayered ceramic substrates. This BPF features coupled resonators with negative coupling coefficients. A BPF with center frequency 2.45 GHz is designed and fabricated. Its size is only 2.0 mm × 1.8 mm × 0.67 mm when implemented by a standard low temperature co-fired ceramic technology. The size reduction is due to the higher coupling coefficient between the negatively-coupled resonators than the positively-coupled ones, allowing tighter space between the resonators. The measured insertion losses of the previous BPF were less than 3 dB and return losses more than 18 dB in the passband. The measured result agrees very well with the electromagnetic (EM) designed response.

原文	English
頁（從 - 到）	641-643
頁數	3
期刊	IEEE Microwave and Wireless Components Letters
卷	15
發行號	10
DOIs	https://doi.org/10.1109/LMWC.2005.856688
出版狀態	Published - 10月 2005

文獻附註

Funding Information:
Manuscript received March 18, 2005; revised May 23, 2005. This work was supported by the National Science Council of Taiwan, R.O.C., under Contract NSC 91-2219-E-182-003. The review of this letter was arranged by Associate Editor J.-G. Ma. The authors are with the Department of Electronic Engineering, Chang Gung University, Taoyuan 333, Taiwan, R.O.C. (e-mail: [email protected]). Digital Object Identifier 10.1109/LMWC.2005.856688 Fig. 1. Circuit of a synchronously-tuned coupled resonator with magnetic coupling.

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abstract = "This letter presents the design and realization of a new compact bandpass filter (BPF) fabricated on multilayered ceramic substrates. This BPF features coupled resonators with negative coupling coefficients. A BPF with center frequency 2.45 GHz is designed and fabricated. Its size is only 2.0 mm × 1.8 mm × 0.67 mm when implemented by a standard low temperature co-fired ceramic technology. The size reduction is due to the higher coupling coefficient between the negatively-coupled resonators than the positively-coupled ones, allowing tighter space between the resonators. The measured insertion losses of the previous BPF were less than 3 dB and return losses more than 18 dB in the passband. The measured result agrees very well with the electromagnetic (EM) designed response.",

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N2 - This letter presents the design and realization of a new compact bandpass filter (BPF) fabricated on multilayered ceramic substrates. This BPF features coupled resonators with negative coupling coefficients. A BPF with center frequency 2.45 GHz is designed and fabricated. Its size is only 2.0 mm × 1.8 mm × 0.67 mm when implemented by a standard low temperature co-fired ceramic technology. The size reduction is due to the higher coupling coefficient between the negatively-coupled resonators than the positively-coupled ones, allowing tighter space between the resonators. The measured insertion losses of the previous BPF were less than 3 dB and return losses more than 18 dB in the passband. The measured result agrees very well with the electromagnetic (EM) designed response.

AB - This letter presents the design and realization of a new compact bandpass filter (BPF) fabricated on multilayered ceramic substrates. This BPF features coupled resonators with negative coupling coefficients. A BPF with center frequency 2.45 GHz is designed and fabricated. Its size is only 2.0 mm × 1.8 mm × 0.67 mm when implemented by a standard low temperature co-fired ceramic technology. The size reduction is due to the higher coupling coefficient between the negatively-coupled resonators than the positively-coupled ones, allowing tighter space between the resonators. The measured insertion losses of the previous BPF were less than 3 dB and return losses more than 18 dB in the passband. The measured result agrees very well with the electromagnetic (EM) designed response.

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KW - Filters

KW - Low-temperature co-fired ceramic (LTCC)

KW - Lumped element microwave circuits

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A new compact LTCC bandpass filter using negative coupling

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