Broadband Cascade Quadruplet Bandpass Filter With Low-Temperature Co-Fired Ceramic Technology

Author

Tang, Ching-Wen ; Shen, Che-Wei ; Tseng, Chien-Chung

Author_Institution

Dept. of Commun. Eng., Nat. Chung Cheng Univ., Chiayi

Volume

17

Issue

5

fYear

2007

fDate

5/1/2007 12:00:00 AM

Firstpage

340

Lastpage

342

Abstract

The broadband bandpass filter (BPF) designed with low-temperature co-fired ceramic technology has been proposed in this letter. By adopting a quadruple resonator, the broadband BPF with compact size can be fabricated. A quadruple resonator with metal-insulator-metal capacitors is employed to make inductive and capacitive couplings. The coupling scheme can create two transmission zeros at both sides of passband skirts by appropriately selecting the coupling coefficient. The center frequency and bandwidth ratio of this filter are 3.875 GHz and 50%, respectively. This filter can increase the sensitivity and linearity in the wireless communication system as well

Keywords

MIM devices; band-pass filters; ceramics; microwave filters; 3.875 GHz; broadband band-pass filter; capacitive coupling; cascade quadruplet band-pass filter; inductive coupling; low-temperature co-fired ceramic; metal-insulator-metal capacitors; quadruple resonator; Band pass filters; Bandwidth; Ceramics; Couplings; Filtering theory; Frequency; Linearity; MIM capacitors; Passband; Resonator filters; Cascade quadruplet filter; low-temperature co-fired ceramic (LTCC);

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2007.895698

Filename

4167939