A compact microstrip step-impedance low-pass filter (SILPF) using complementary split ring resonators (CSRRs)

Author

Casanueva, A. ; León, A. ; González, O. ; Mediavilla, A.

Author_Institution

Dpto. Ing. de Comun., Univ. de Cantabria, Santander, Spain

fYear

2009

fDate

24-25 Sept. 2009

Firstpage

1

Lastpage

4

Abstract

A new topology for the design of microstrip low pass filters (LPF) with a wide stopband, low insertion loss, and sharp rejection is proposed in this paper. This filter is especially relevant for wireless sensing, local positioning, and RFID. In this contribution, the concept of complementary split ring resonators (CSRRs) is utilized to improve the selectivity of a microwave low pass filter. To this end, a step-impedance low-pass filter (SILPF) with CSRR is first analyzed and then built. Properties of these configurations are discussed, and two manufactured prototypes have been successfully tested. The results show the usefulness and validity of the new structures with high rejection capabilities.

Keywords

low-pass filters; microstrip filters; microwave filters; resonator filters; CSRR; RFID; SILPF; complementary split ring resonator; insertion loss; local positioning; microstrip step-impedance low-pass filter design; microwave low pass filter; sharp rejection; wireless sensing; Insertion loss; Low pass filters; Microstrip filters; Microstrip resonators; Microwave filters; Optical ring resonators; Radiofrequency identification; Resonator filters; Topology; Wireless sensor networks; Complementary split ring resonators (CSRRs); Low pass filters; RF planar circuits;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Sensing, Local Positioning, and RFID, 2009. IMWS 2009. IEEE MTT-S International Microwave Workshop on

Conference_Location

Cavtat

Print_ISBN

978-1-4244-5060-2

Electronic_ISBN

978-1-4244-5062-6

Type

conf

DOI

10.1109/IMWS2.2009.5307862

Filename

5307862