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J.-G. Lee and J.-H. Lee, “Parallel Coupled Bandstop Filter Using Double Negative Coupled Transmission Line,” IEEE Microwave and Wireless Components Letters, Vol. 17, No. 4, 2007, pp. 283-285. doi:10.1109/LMWC.2007.892973

has been cited by the following article:

• TITLE: Effective Size Reduction Technique for Microstrip Filters

  AUTHORS: Dhirendra Kumar, Asok De

  KEYWORDS: Band Stop Filter; Fractal Structures; Kotch Curve; Low Pass Filters; Open Stub; Step Impedance Network

  JOURNAL NAME: Journal of Electromagnetic Analysis and Applications, Vol.5 No.4, April 11, 2013

  ABSTRACT: In this paper an effective size reduction technique using fractal structure is suggested. The proposed technique has been applied on a band stop and a low pass filter separately. This technique provides 42% reduction of size for the band stop filter and about 26% for the low pass counterpart. Both the designed structures are fabricated and the measured results are compared with the simulated results. The proposed technique does not require any recalculation or optimization of dimensions of the filter, and is straightforward to implement. The band stop filter is designed for the center frequency of 3 GHz where as the cut-off frequency for low pass filter is 2.5 GHz. A good agreement between the simulated and measured results is observed. A comprehensible explanation of the proposed technique is also provided.