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

Department of Electronic Engineering

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

31 Scopus citations

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.

Original language	English
Pages (from-to)	641-643
Number of pages	3
Journal	IEEE Microwave and Wireless Components Letters
Volume	15
Issue number	10
DOIs	https://doi.org/10.1109/LMWC.2005.856688
State	Published - Oct 2005

Bibliographical note

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.

Keywords

Bandpass filter (BPF)
Filters
Low-temperature co-fired ceramic (LTCC)
Lumped element microwave circuits

Access to Document

10.1109/LMWC.2005.856688

Cite this

@article{25d1866c01424ca98860793604b4caf9,

title = "A new compact LTCC bandpass filter using negative coupling",

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.",

keywords = "Bandpass filter (BPF), Filters, Low-temperature co-fired ceramic (LTCC), Lumped element microwave circuits",

author = "Tung, \{Wei Shin\} and Chiang, \{Yi Chyun\} and Cheng, \{Jui Ching\}",

note = "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.",

year = "2005",

month = oct,

doi = "10.1109/LMWC.2005.856688",

language = "???core.languages.en\_GB???",

volume = "15",

pages = "641--643",

journal = "IEEE Microwave and Wireless Components Letters",

issn = "1531-1309",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "10",

}

TY - JOUR

T1 - A new compact LTCC bandpass filter using negative coupling

AU - Tung, Wei Shin

AU - Chiang, Yi Chyun

AU - Cheng, Jui Ching

N1 - 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.

PY - 2005/10

Y1 - 2005/10

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.

KW - Bandpass filter (BPF)

KW - Filters

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

KW - Lumped element microwave circuits

UR - https://www.scopus.com/pages/publications/27144558362

U2 - 10.1109/LMWC.2005.856688

DO - 10.1109/LMWC.2005.856688

M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???

AN - SCOPUS:27144558362

SN - 1531-1309

VL - 15

SP - 641

EP - 643

JO - IEEE Microwave and Wireless Components Letters

JF - IEEE Microwave and Wireless Components Letters

IS - 10

ER -

A new compact LTCC bandpass filter using negative coupling

Abstract

Bibliographical note

Keywords

Access to Document

Other files and links

Fingerprint

Cite this