中文

Journal of Shanghai University（Natural Science Edition） ›› 2011, Vol. 17 ›› Issue (5): 591-594.doi: 10.3969/j.issn.1007-2861.2011.05.003

• Communication and Information • Previous Articles     Next Articles

Design of S-Band Bandpass Hairpin Microstrip Filter

JING Dong-dong1,LI Guo-hui1,HU Jin-ping1,GUAN Xue-hui1,2   

  1. 1. Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Shanghai University, Shanghai 200072, China; 2. School of Electrical and Electronic Engineering, East China Jiaotong University, Nanchang 330013, China
  • Received:2010-04-06 Online:2011-10-26 Published:2011-10-26

PDF

1842

Cited

1

Abstract: In this paper, a novel microstrip filter with the center frequency 2.4 GHz and five microstrip hairpins is presented. By coupling between adjacent resonators, two transmission zeros have been realized at the upper and lower pass-band edge, respectively, making the pass-band edge very steep, and forcing the second harmonic 3.5 GHz away from the center frequency. Simulation results show that the proposed filter has excellent performance in the pass-band with sharp cutoff frequency response, and can reduce the second harmonic. The filter has two transmission zeros, each on one side of the pass-band without offset. This is in good agreement with the simulation results. However the pass-band performance is to be improved.

Key words: hairpin filters, harmonic suppression, microstrip, transmission zero

CLC Number: