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.