Design of a 60/77 GHz dual-band bandpass filter with MMIC technology

Author

Kao, H.L. ; Shih, S.P. ; Yeh, C.S. ; Lee, S.S. ; Lee, Y.C. ; Ke, J.Y. ; Fu, J.S. ; Chang, L.C.

Author_Institution

Dept. of Electron. Eng., Chang Gung Univ., Taoyuan, Taiwan

fYear

2011

fDate

7-10 Aug. 2011

Firstpage

1

Lastpage

4

Abstract

This paper has presented a novel dual-band bandpass filter with two sets of resonators based on stepped-impedance, which can achieve size reduction. Two sets of resonators are employed in the filter, one resonate at the 60 GHz and the other at the 77 GHz. The dual-band filter can be realized flexible passband and bandwidth selections by utilizing impedance varying and source-load coupling. The fractional 3-dB bandwidths of 60 and 77 GHz are 7.1% and 7%, respectively. The |S₂₁| of 60 and 77 GHz are -1.66 dB and -1.89dB and |S₁₁| of 60 and 77 GHz are -22 dB and -16 dB, respectively. Between two passbands, the transmission zero at 68 GHz is nearly 40 dB isolation. Good performance and small size make it attractive for wireless communications.

Keywords

MMIC; band-pass filters; radiocommunication; resonators; MMIC technology; bandwidth selections; dual-band bandpass filter; dual-band filter; flexible passband; fractional bandwidths; frequency 60 GHz; frequency 77 GHz; impedance varying; resonators; size reduction; source-load coupling; stepped-impedance; transmission zero; wireless communications; CMOS integrated circuits; MMICs;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems (MWSCAS), 2011 IEEE 54th International Midwest Symposium on

Conference_Location

Seoul

ISSN

1548-3746

Print_ISBN

978-1-61284-856-3

Electronic_ISBN

1548-3746

Type

conf

DOI

10.1109/MWSCAS.2011.6026638

Filename

6026638