Title :
A novel hybrid defected ground structure as low pass filter
Author :
Mollah, Md Nurunnabi ; Karmakar, Nemai C.
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore
Abstract :
A novel DGS has been investigated to achieve better S-parameter performance than ever reported in the microwave literature. A chronological development in designs ranging from conventional square patterned photonic bandgap (PBG) structure and defected ground structures (DGS) to the proposed novel DGS has been investigated theoretically and experimentally. Novel design results from the application of Chebyshev distribution in dimensions of the conventional DGS. The proposed novel DGS provides excellent performance in terms of ripples in the passband, sharp selectivity at the cut-off frequency and spurious-free wide stopband.
Keywords :
Chebyshev filters; S-parameters; low-pass filters; photonic band gap; Chebyshev distribution; DGS; PBG structure; S-parameter performance; cut-off frequency selectivity; hybrid defected ground structure; low pass filter; passband ripples; spurious-free wide stopband; square patterned photonic bandgap; Chebyshev approximation; Dielectric substrates; Geometry; Low pass filters; Metamaterials; Microwave technology; Passband; Periodic structures; Photonic band gap; Polynomials;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2004. IEEE
Print_ISBN :
0-7803-8302-8
DOI :
10.1109/APS.2004.1330120
