论文信息 - Harmonic suppression in microstrip multistage coupled‐ring bandpass filters using defected ground structures

Harmonic suppression in microstrip multistage coupled‐ring bandpass filters using defected ground structures

The introduction of defected ground structures (DGSs) in microwave bandpass filters, based on microstrip coupled-ring resonators to suppress higher harmonics, is investigated. Two topologies based on placing DGS units into and out of the coupled rings are considered and investigated. Harmonic suppression ratios for the second harmonic greater than 20 dB in a flat bandpass filter centered at 2.25 GHz are achieved for both structures. © 2003 Wiley Periodicals, Inc. Microwave Opt Technol Lett 39: 351–354, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.11214

[1] Amadeu Griol,et al. Microstrip multistage coupled ring bandpass filters using photonic bandgap structures for harmonic suppression , 2003 .

[2] K. Chang,et al. Microstrip mode suppression ring resonator , 1994 .

[3] Bomson Lee,et al. Design of defected ground structures for harmonic control of active microstrip antenna , 2002, IEEE Antennas and Propagation Society International Symposium (IEEE Cat. No.02CH37313).

[4] Amadeu Griol,et al. Microstrip multistage coupled ring active bandpass filters with harmonic suppression , 1999 .

[5] Y. Qian,et al. A design of the low-pass filter using the novel microstrip defected ground structure , 2001 .

[6] Amadeu Griol,et al. Harmonic suppressed microstrip multistage coupled ring bandpass filters , 1998 .

[7] M. Guglielmi,et al. Harmonic suppression in microstrip dual-mode ring-resonator bandpass filters , 1996, 1996 IEEE MTT-S International Microwave Symposium Digest.