Abstract:
The antenna plays a key role in the wireless communication. The concept of dual mode band stop filter based on DNG using the Left Handed Meta materials is proposed which having the negative permeability and permittivity. These materials have a special unique property “negative refraction” and it is able to support the backward waves. In this paper LH Miniaturized Microstrip filter is presented. The LH filter has characteristic of narrow fractional bandwidth and reduced size in comparison to conventional one. The proposed filter physically implemented on top of a FR/4 ‘Glass/Epoxy’ substrate which having the Dielectric constant (εr) is 4.4. The substrate thickness is 1.6 mm and having the Loss tangent of 0.02 using the conventional fabrication process. The frequency band is lie between 1.5 to 1.7 GHz. It gives the good results. There is reduction in the size of filter because there is no periodic structure is used that was used in SRR, CSRR and IDCLLR. The proposed design is five times smaller than the conventional one.
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